/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/chl-array-int-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 16:35:19,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 16:35:19,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 16:35:19,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 16:35:19,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-08 16:35:19,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-08 16:35:19,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-08 16:35:19,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-08 16:35:19,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-08 16:35:19,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-08 16:35:19,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-08 16:35:19,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-08 16:35:19,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-08 16:35:19,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-08 16:35:19,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-08 16:35:19,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-08 16:35:19,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-08 16:35:19,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-08 16:35:19,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-08 16:35:19,347 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-08 16:35:19,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-08 16:35:19,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-08 16:35:19,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-08 16:35:19,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-08 16:35:19,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-08 16:35:19,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 16:35:19,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 16:35:19,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 16:35:19,354 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-08 16:35:19,382 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 16:35:19,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 16:35:19,382 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 16:35:19,383 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 16:35:19,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 16:35:19,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 16:35:19,385 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 16:35:19,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 16:35:19,385 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 16:35:19,385 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 16:35:19,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 16:35:19,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 16:35:19,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 16:35:19,386 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-08 16:35:19,386 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-08 16:35:19,387 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-08 16:35:19,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 16:35:19,387 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-08 16:35:19,387 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-08 16:35:19,388 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-08 16:35:19,388 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 16:35:19,388 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 16:35:19,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 16:35:19,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 16:35:19,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 16:35:19,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:35:19,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 16:35:19,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 16:35:19,390 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-08 16:35:19,390 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-08 16:35:19,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 16:35:19,390 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-08 16:35:19,390 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 16:35:19,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 16:35:19,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 16:35:19,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 16:35:19,860 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 16:35:19,861 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 16:35:19,862 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2021-10-08 16:35:19,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d93243ea/0d33e518a9d0435f8a292d07f44a04ca/FLAGb1a1e588b [2021-10-08 16:35:20,700 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 16:35:20,701 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2021-10-08 16:35:20,711 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d93243ea/0d33e518a9d0435f8a292d07f44a04ca/FLAGb1a1e588b [2021-10-08 16:35:21,080 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d93243ea/0d33e518a9d0435f8a292d07f44a04ca [2021-10-08 16:35:21,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 16:35:21,096 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-08 16:35:21,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 16:35:21,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 16:35:21,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 16:35:21,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37426944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21, skipping insertion in model container [2021-10-08 16:35:21,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 16:35:21,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 16:35:21,407 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/chl-array-int-symm.wvr.c[2478,2491] [2021-10-08 16:35:21,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:35:21,434 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-08 16:35:21,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 16:35:21,458 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/chl-array-int-symm.wvr.c[2478,2491] [2021-10-08 16:35:21,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:35:21,481 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 16:35:21,507 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/chl-array-int-symm.wvr.c[2478,2491] [2021-10-08 16:35:21,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:35:21,534 INFO L208 MainTranslator]: Completed translation [2021-10-08 16:35:21,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21 WrapperNode [2021-10-08 16:35:21,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 16:35:21,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 16:35:21,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 16:35:21,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 16:35:21,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 16:35:21,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 16:35:21,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 16:35:21,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 16:35:21,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 16:35:21,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 16:35:21,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 16:35:21,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 16:35:21,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (1/1) ... [2021-10-08 16:35:21,655 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:35:21,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:35:21,709 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) [2021-10-08 16:35:21,716 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 [2021-10-08 16:35:21,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-08 16:35:21,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 16:35:21,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-08 16:35:21,770 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 16:35:21,770 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 16:35:21,770 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 16:35:21,770 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 16:35:21,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-08 16:35:21,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 16:35:21,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 16:35:21,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 16:35:21,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-08 16:35:21,773 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 16:35:22,750 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 16:35:22,751 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2021-10-08 16:35:22,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:35:22 BoogieIcfgContainer [2021-10-08 16:35:22,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 16:35:22,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 16:35:22,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 16:35:22,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 16:35:22,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 04:35:21" (1/3) ... [2021-10-08 16:35:22,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a46c0ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:35:22, skipping insertion in model container [2021-10-08 16:35:22,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:35:21" (2/3) ... [2021-10-08 16:35:22,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a46c0ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:35:22, skipping insertion in model container [2021-10-08 16:35:22,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:35:22" (3/3) ... [2021-10-08 16:35:22,764 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-array-int-symm.wvr.c [2021-10-08 16:35:22,770 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 16:35:22,771 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-10-08 16:35:22,771 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 16:35:22,826 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,826 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,827 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,827 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,827 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,828 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,828 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,828 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,828 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,828 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,829 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,829 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,829 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,829 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,833 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,834 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,834 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,834 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,835 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,835 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,835 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,836 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,839 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,839 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,839 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,840 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,840 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,840 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,840 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,841 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,842 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,842 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,842 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,843 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,843 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,843 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,843 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,843 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,844 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,845 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,846 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,846 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,846 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,847 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,847 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,847 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,847 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,847 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,848 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,848 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,849 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,849 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,850 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,851 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,851 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,851 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,852 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,852 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,852 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,853 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,853 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,854 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,854 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,854 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,855 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,855 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,856 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,856 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,856 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,857 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,857 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,857 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,857 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,859 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,860 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,860 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,860 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,861 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,861 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,861 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,861 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,862 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,862 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,863 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,863 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,863 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,863 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,864 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,864 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,864 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,865 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,866 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,867 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,867 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,870 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,875 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,876 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,876 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,876 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,876 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,877 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,877 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,877 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,877 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,878 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,878 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,878 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,879 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,879 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,879 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,879 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,879 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,881 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,881 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,881 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,881 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,882 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,882 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,882 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,882 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,882 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,883 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,883 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,883 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,883 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,883 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,883 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,884 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,884 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,884 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,884 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,885 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,887 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,887 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,887 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,888 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,888 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,888 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,889 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,889 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,889 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,889 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,889 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,890 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,890 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,890 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,891 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,891 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,892 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,892 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,893 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,893 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,893 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,893 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,894 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,894 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,894 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,894 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,895 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,895 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,895 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,895 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,895 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,895 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,896 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,896 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,898 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,899 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,900 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,900 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,900 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,900 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,901 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,901 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,902 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,902 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,902 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,902 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,903 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,903 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,903 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,903 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,904 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,904 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,904 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,905 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,905 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,905 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,905 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,906 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,906 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,906 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,906 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,906 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,907 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,907 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,907 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,907 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,907 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,908 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,909 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,909 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,909 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,910 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,910 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,910 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,910 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,910 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,911 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,911 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,911 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,911 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,911 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,912 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,912 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,912 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,912 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,912 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,913 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,913 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,914 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,919 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,920 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,922 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,922 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,922 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,922 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,922 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,923 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,923 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,923 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,923 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,923 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,924 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,924 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,924 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,924 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,924 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,924 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,925 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,925 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,925 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,925 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,925 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,926 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,926 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,926 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,926 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,926 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,926 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,927 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,927 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,927 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,928 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,928 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,928 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,929 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,929 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,929 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,929 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,930 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,930 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,930 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,930 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,934 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,935 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,935 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,935 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,936 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,936 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,936 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,936 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,936 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,937 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,937 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,937 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,938 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,938 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,938 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,938 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,944 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,945 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,945 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,945 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,945 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,945 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,946 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,946 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,946 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,946 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,946 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,947 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,947 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,947 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,947 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,947 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:35:22,958 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-08 16:35:23,029 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 16:35:23,041 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 [2021-10-08 16:35:23,042 INFO L340 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2021-10-08 16:35:23,072 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 16:35:23,085 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 236 places, 250 transitions, 516 flow [2021-10-08 16:35:23,089 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 236 places, 250 transitions, 516 flow [2021-10-08 16:35:23,091 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 236 places, 250 transitions, 516 flow [2021-10-08 16:35:23,254 INFO L129 PetriNetUnfolder]: 21/248 cut-off events. [2021-10-08 16:35:23,254 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-08 16:35:23,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 248 events. 21/248 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 469 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 156. Up to 3 conditions per place. [2021-10-08 16:35:23,275 INFO L116 LiptonReduction]: Number of co-enabled transitions 7548 [2021-10-08 16:36:02,872 INFO L131 LiptonReduction]: Checked pairs total: 10599 [2021-10-08 16:36:02,873 INFO L133 LiptonReduction]: Total number of compositions: 302 [2021-10-08 16:36:02,882 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 57 places, 55 transitions, 126 flow [2021-10-08 16:36:02,931 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 729 states, 443 states have (on average 4.417607223476298) internal successors, (1957), 728 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:02,937 INFO L276 IsEmpty]: Start isEmpty. Operand has 729 states, 443 states have (on average 4.417607223476298) internal successors, (1957), 728 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:02,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 16:36:02,942 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:02,943 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 16:36:02,944 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:36:02,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:02,949 INFO L82 PathProgramCache]: Analyzing trace with hash 32548, now seen corresponding path program 1 times [2021-10-08 16:36:02,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:02,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105171134] [2021-10-08 16:36:02,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:02,964 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:02,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:02,968 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) [2021-10-08 16:36:02,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-08 16:36:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:03,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:36:03,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:03,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:36:03,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:36:03,459 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-08 16:36:03,461 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 [2021-10-08 16:36:03,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:03,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:03,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:03,644 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:03,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105171134] [2021-10-08 16:36:03,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105171134] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:36:03,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:36:03,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:36:03,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351472701] [2021-10-08 16:36:03,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:36:03,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:03,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:36:03,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:36:03,672 INFO L87 Difference]: Start difference. First operand has 729 states, 443 states have (on average 4.417607223476298) internal successors, (1957), 728 states have internal predecessors, (1957), 0 states have call successors, (0), 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 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) [2021-10-08 16:36:04,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:04,501 INFO L93 Difference]: Finished difference Result 977 states and 2589 transitions. [2021-10-08 16:36:04,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:36:04,504 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 [2021-10-08 16:36:04,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:04,531 INFO L225 Difference]: With dead ends: 977 [2021-10-08 16:36:04,531 INFO L226 Difference]: Without dead ends: 977 [2021-10-08 16:36:04,532 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 78.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:36:04,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2021-10-08 16:36:04,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 492. [2021-10-08 16:36:04,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 323 states have (on average 4.04953560371517) internal successors, (1308), 491 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:04,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1308 transitions. [2021-10-08 16:36:04,629 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1308 transitions. Word has length 2 [2021-10-08 16:36:04,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:04,630 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 1308 transitions. [2021-10-08 16:36:04,630 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) [2021-10-08 16:36:04,630 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1308 transitions. [2021-10-08 16:36:04,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 16:36:04,630 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:04,631 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 16:36:04,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:04,847 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 [2021-10-08 16:36:04,848 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:36:04,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:04,849 INFO L82 PathProgramCache]: Analyzing trace with hash 32549, now seen corresponding path program 1 times [2021-10-08 16:36:04,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:04,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612929283] [2021-10-08 16:36:04,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:04,854 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:04,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:04,855 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) [2021-10-08 16:36:04,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-08 16:36:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:04,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 16:36:04,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:04,944 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 16:36:04,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-08 16:36:04,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:04,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:04,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:04,979 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:04,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612929283] [2021-10-08 16:36:04,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612929283] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:36:04,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:36:04,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 16:36:04,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701477339] [2021-10-08 16:36:04,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:36:04,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:04,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:36:04,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:36:04,983 INFO L87 Difference]: Start difference. First operand 492 states and 1308 transitions. 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) [2021-10-08 16:36:05,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:05,350 INFO L93 Difference]: Finished difference Result 490 states and 1302 transitions. [2021-10-08 16:36:05,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:36:05,350 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 [2021-10-08 16:36:05,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:05,355 INFO L225 Difference]: With dead ends: 490 [2021-10-08 16:36:05,356 INFO L226 Difference]: Without dead ends: 490 [2021-10-08 16:36:05,356 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:36:05,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-10-08 16:36:05,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 490. [2021-10-08 16:36:05,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 323 states have (on average 4.030959752321982) internal successors, (1302), 489 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:05,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1302 transitions. [2021-10-08 16:36:05,385 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1302 transitions. Word has length 2 [2021-10-08 16:36:05,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:05,385 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 1302 transitions. [2021-10-08 16:36:05,385 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) [2021-10-08 16:36:05,386 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1302 transitions. [2021-10-08 16:36:05,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 16:36:05,386 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:05,386 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 16:36:05,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:05,607 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 [2021-10-08 16:36:05,609 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:36:05,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:05,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1018449, now seen corresponding path program 1 times [2021-10-08 16:36:05,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:05,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912563429] [2021-10-08 16:36:05,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:05,611 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:05,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:05,612 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) [2021-10-08 16:36:05,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-08 16:36:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:05,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:36:05,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:05,906 INFO L354 Elim1Store]: treesize reduction 145, result has 24.9 percent of original size [2021-10-08 16:36:05,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 68 [2021-10-08 16:36:05,919 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 69 treesize of output 67 [2021-10-08 16:36:06,121 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-10-08 16:36:06,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 39 [2021-10-08 16:36:06,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:06,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:06,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:06,488 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:06,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1912563429] [2021-10-08 16:36:06,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1912563429] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:36:06,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:36:06,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-08 16:36:06,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604384439] [2021-10-08 16:36:06,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:36:06,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:06,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:36:06,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:36:06,490 INFO L87 Difference]: Start difference. First operand 490 states and 1302 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:08,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:08,838 INFO L93 Difference]: Finished difference Result 391 states and 998 transitions. [2021-10-08 16:36:08,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:36:08,840 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-08 16:36:08,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:08,843 INFO L225 Difference]: With dead ends: 391 [2021-10-08 16:36:08,844 INFO L226 Difference]: Without dead ends: 391 [2021-10-08 16:36:08,844 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 180.8ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:36:08,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-10-08 16:36:08,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2021-10-08 16:36:08,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 270 states have (on average 3.696296296296296) internal successors, (998), 390 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:08,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 998 transitions. [2021-10-08 16:36:08,860 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 998 transitions. Word has length 3 [2021-10-08 16:36:08,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:08,861 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 998 transitions. [2021-10-08 16:36:08,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:08,861 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 998 transitions. [2021-10-08 16:36:08,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 16:36:08,862 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:08,862 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 16:36:08,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:09,077 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 [2021-10-08 16:36:09,077 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:36:09,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:09,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1018450, now seen corresponding path program 1 times [2021-10-08 16:36:09,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:09,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75673167] [2021-10-08 16:36:09,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:09,079 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:09,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:09,080 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) [2021-10-08 16:36:09,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-08 16:36:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:09,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:36:09,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:09,205 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 16:36:09,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 37 [2021-10-08 16:36:09,327 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-10-08 16:36:09,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 42 [2021-10-08 16:36:09,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:09,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:09,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:09,465 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:09,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75673167] [2021-10-08 16:36:09,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75673167] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:36:09,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:36:09,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:36:09,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86783155] [2021-10-08 16:36:09,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:36:09,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:09,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:36:09,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:36:09,468 INFO L87 Difference]: Start difference. First operand 391 states and 998 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:09,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:09,783 INFO L93 Difference]: Finished difference Result 292 states and 694 transitions. [2021-10-08 16:36:09,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:36:09,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-08 16:36:09,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:09,787 INFO L225 Difference]: With dead ends: 292 [2021-10-08 16:36:09,787 INFO L226 Difference]: Without dead ends: 292 [2021-10-08 16:36:09,787 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 100.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:36:09,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-10-08 16:36:09,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2021-10-08 16:36:09,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 217 states have (on average 3.19815668202765) internal successors, (694), 291 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:09,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 694 transitions. [2021-10-08 16:36:09,799 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 694 transitions. Word has length 3 [2021-10-08 16:36:09,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:09,799 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 694 transitions. [2021-10-08 16:36:09,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:09,799 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 694 transitions. [2021-10-08 16:36:09,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 16:36:09,800 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:09,800 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-08 16:36:09,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:10,012 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 [2021-10-08 16:36:10,012 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:36:10,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:10,013 INFO L82 PathProgramCache]: Analyzing trace with hash 31486884, now seen corresponding path program 1 times [2021-10-08 16:36:10,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:10,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043581457] [2021-10-08 16:36:10,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:10,014 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:10,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:10,015 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) [2021-10-08 16:36:10,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-08 16:36:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:10,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:36:10,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:10,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:36:10,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:36:10,324 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-08 16:36:10,325 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 [2021-10-08 16:36:10,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:10,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:10,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:10,956 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:10,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043581457] [2021-10-08 16:36:10,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043581457] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:10,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:10,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 16:36:10,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961841523] [2021-10-08 16:36:10,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:36:10,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:10,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:36:10,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:10,959 INFO L87 Difference]: Start difference. First operand 292 states and 694 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) [2021-10-08 16:36:17,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:17,475 INFO L93 Difference]: Finished difference Result 1431 states and 3424 transitions. [2021-10-08 16:36:17,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 16:36:17,478 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 [2021-10-08 16:36:17,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:17,492 INFO L225 Difference]: With dead ends: 1431 [2021-10-08 16:36:17,492 INFO L226 Difference]: Without dead ends: 1431 [2021-10-08 16:36:17,493 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 793.8ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:36:17,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2021-10-08 16:36:17,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 299. [2021-10-08 16:36:17,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 224 states have (on average 3.1607142857142856) internal successors, (708), 298 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:17,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 708 transitions. [2021-10-08 16:36:17,518 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 708 transitions. Word has length 4 [2021-10-08 16:36:17,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:17,519 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 708 transitions. [2021-10-08 16:36:17,519 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) [2021-10-08 16:36:17,519 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 708 transitions. [2021-10-08 16:36:17,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 16:36:17,520 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:17,520 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 16:36:17,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:17,734 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 [2021-10-08 16:36:17,736 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:36:17,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:17,737 INFO L82 PathProgramCache]: Analyzing trace with hash 978753776, now seen corresponding path program 1 times [2021-10-08 16:36:17,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:17,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070938802] [2021-10-08 16:36:17,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:17,738 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:17,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:17,739 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) [2021-10-08 16:36:17,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-08 16:36:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:17,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:36:17,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:18,027 INFO L354 Elim1Store]: treesize reduction 149, result has 22.8 percent of original size [2021-10-08 16:36:18,028 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 33 treesize of output 63 [2021-10-08 16:36:18,037 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 65 treesize of output 63 [2021-10-08 16:36:18,309 INFO L354 Elim1Store]: treesize reduction 64, result has 27.3 percent of original size [2021-10-08 16:36:18,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2021-10-08 16:36:21,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:21,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:21,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:21,596 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:21,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070938802] [2021-10-08 16:36:21,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070938802] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:36:21,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:36:21,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-08 16:36:21,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883729810] [2021-10-08 16:36:21,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:36:21,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:21,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:36:21,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:36:21,599 INFO L87 Difference]: Start difference. First operand 299 states and 708 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:26,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:26,158 INFO L93 Difference]: Finished difference Result 278 states and 665 transitions. [2021-10-08 16:36:26,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:36:26,159 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 16:36:26,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:26,161 INFO L225 Difference]: With dead ends: 278 [2021-10-08 16:36:26,161 INFO L226 Difference]: Without dead ends: 278 [2021-10-08 16:36:26,162 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2431.6ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:36:26,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-10-08 16:36:26,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2021-10-08 16:36:26,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 217 states have (on average 3.064516129032258) internal successors, (665), 277 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:26,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 665 transitions. [2021-10-08 16:36:26,172 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 665 transitions. Word has length 5 [2021-10-08 16:36:26,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:26,172 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 665 transitions. [2021-10-08 16:36:26,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:26,173 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 665 transitions. [2021-10-08 16:36:26,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 16:36:26,174 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:26,174 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 16:36:26,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:26,386 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 [2021-10-08 16:36:26,386 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:36:26,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:26,387 INFO L82 PathProgramCache]: Analyzing trace with hash 978753774, now seen corresponding path program 1 times [2021-10-08 16:36:26,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:26,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [816856777] [2021-10-08 16:36:26,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:26,389 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:26,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:26,390 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) [2021-10-08 16:36:26,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-08 16:36:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:26,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:36:26,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:26,514 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 16:36:26,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 34 [2021-10-08 16:36:26,629 INFO L354 Elim1Store]: treesize reduction 57, result has 30.5 percent of original size [2021-10-08 16:36:26,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 57 [2021-10-08 16:36:26,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:26,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:26,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:26,855 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:26,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [816856777] [2021-10-08 16:36:26,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [816856777] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:36:26,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:36:26,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:36:26,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558419618] [2021-10-08 16:36:26,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:36:26,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:26,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:36:26,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:36:26,858 INFO L87 Difference]: Start difference. First operand 278 states and 665 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:27,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:27,181 INFO L93 Difference]: Finished difference Result 257 states and 622 transitions. [2021-10-08 16:36:27,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:36:27,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 16:36:27,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:27,184 INFO L225 Difference]: With dead ends: 257 [2021-10-08 16:36:27,184 INFO L226 Difference]: Without dead ends: 257 [2021-10-08 16:36:27,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:36:27,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-10-08 16:36:27,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2021-10-08 16:36:27,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 210 states have (on average 2.961904761904762) internal successors, (622), 256 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:27,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 622 transitions. [2021-10-08 16:36:27,195 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 622 transitions. Word has length 5 [2021-10-08 16:36:27,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:27,195 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 622 transitions. [2021-10-08 16:36:27,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:27,195 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 622 transitions. [2021-10-08 16:36:27,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 16:36:27,196 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:27,196 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-08 16:36:27,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:27,412 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 [2021-10-08 16:36:27,412 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:36:27,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:27,413 INFO L82 PathProgramCache]: Analyzing trace with hash 276591826, now seen corresponding path program 1 times [2021-10-08 16:36:27,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:27,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986823799] [2021-10-08 16:36:27,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:27,414 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:27,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:27,415 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) [2021-10-08 16:36:27,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-08 16:36:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:27,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:36:27,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:27,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-08 16:36:27,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:27,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:27,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:27,544 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:27,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986823799] [2021-10-08 16:36:27,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986823799] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:36:27,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:36:27,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-08 16:36:27,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140159503] [2021-10-08 16:36:27,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:36:27,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:27,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:36:27,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:36:27,546 INFO L87 Difference]: Start difference. First operand 257 states and 622 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:27,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:27,810 INFO L93 Difference]: Finished difference Result 199 states and 478 transitions. [2021-10-08 16:36:27,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:36:27,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-08 16:36:27,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:27,815 INFO L225 Difference]: With dead ends: 199 [2021-10-08 16:36:27,815 INFO L226 Difference]: Without dead ends: 199 [2021-10-08 16:36:27,815 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:36:27,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-10-08 16:36:27,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2021-10-08 16:36:27,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 169 states have (on average 2.828402366863905) internal successors, (478), 198 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:27,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 478 transitions. [2021-10-08 16:36:27,823 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 478 transitions. Word has length 6 [2021-10-08 16:36:27,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:27,824 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 478 transitions. [2021-10-08 16:36:27,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:27,824 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 478 transitions. [2021-10-08 16:36:27,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 16:36:27,825 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:27,825 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-08 16:36:27,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:28,037 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 [2021-10-08 16:36:28,039 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:36:28,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:28,039 INFO L82 PathProgramCache]: Analyzing trace with hash 276591827, now seen corresponding path program 1 times [2021-10-08 16:36:28,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:28,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451255114] [2021-10-08 16:36:28,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:28,040 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:28,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:28,042 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) [2021-10-08 16:36:28,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-08 16:36:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:28,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 16:36:28,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:28,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-08 16:36:28,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:28,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:28,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:28,635 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:28,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451255114] [2021-10-08 16:36:28,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451255114] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:36:28,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:36:28,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-08 16:36:28,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209684930] [2021-10-08 16:36:28,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:36:28,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:28,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:36:28,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:28,637 INFO L87 Difference]: Start difference. First operand 199 states and 478 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:29,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:29,502 INFO L93 Difference]: Finished difference Result 437 states and 1096 transitions. [2021-10-08 16:36:29,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:36:29,503 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-08 16:36:29,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:29,507 INFO L225 Difference]: With dead ends: 437 [2021-10-08 16:36:29,508 INFO L226 Difference]: Without dead ends: 437 [2021-10-08 16:36:29,508 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 347.8ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:36:29,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-10-08 16:36:29,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 241. [2021-10-08 16:36:29,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 211 states have (on average 3.345971563981043) internal successors, (706), 240 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:29,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 706 transitions. [2021-10-08 16:36:29,519 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 706 transitions. Word has length 6 [2021-10-08 16:36:29,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:29,520 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 706 transitions. [2021-10-08 16:36:29,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:29,520 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 706 transitions. [2021-10-08 16:36:29,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 16:36:29,521 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:29,521 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-08 16:36:29,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:29,733 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 [2021-10-08 16:36:29,733 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:36:29,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:29,735 INFO L82 PathProgramCache]: Analyzing trace with hash 276591764, now seen corresponding path program 1 times [2021-10-08 16:36:29,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:29,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614279753] [2021-10-08 16:36:29,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:29,736 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:29,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:29,741 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) [2021-10-08 16:36:29,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-08 16:36:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:29,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:36:29,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:29,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:29,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:29,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:29,980 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:29,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614279753] [2021-10-08 16:36:29,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614279753] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:36:29,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:36:29,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-08 16:36:29,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194898143] [2021-10-08 16:36:29,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:36:29,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:29,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:36:29,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:29,983 INFO L87 Difference]: Start difference. First operand 241 states and 706 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) [2021-10-08 16:36:30,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:30,474 INFO L93 Difference]: Finished difference Result 305 states and 834 transitions. [2021-10-08 16:36:30,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:36:30,475 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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 [2021-10-08 16:36:30,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:30,478 INFO L225 Difference]: With dead ends: 305 [2021-10-08 16:36:30,478 INFO L226 Difference]: Without dead ends: 305 [2021-10-08 16:36:30,479 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 62.8ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:30,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-10-08 16:36:30,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 276. [2021-10-08 16:36:30,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 246 states have (on average 3.203252032520325) internal successors, (788), 275 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:30,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 788 transitions. [2021-10-08 16:36:30,489 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 788 transitions. Word has length 6 [2021-10-08 16:36:30,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:30,489 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 788 transitions. [2021-10-08 16:36:30,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) [2021-10-08 16:36:30,489 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 788 transitions. [2021-10-08 16:36:30,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:36:30,490 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:30,490 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:30,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:30,705 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 [2021-10-08 16:36:30,706 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:36:30,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:30,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1811612216, now seen corresponding path program 1 times [2021-10-08 16:36:30,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:30,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1831308121] [2021-10-08 16:36:30,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:30,709 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:30,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:30,710 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) [2021-10-08 16:36:30,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-08 16:36:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:30,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:36:30,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:30,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:36:30,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:30,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:36:30,954 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:30,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1831308121] [2021-10-08 16:36:30,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1831308121] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:36:30,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:36:30,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-08 16:36:30,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250844069] [2021-10-08 16:36:30,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:36:30,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:30,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:36:30,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:36:30,957 INFO L87 Difference]: Start difference. First operand 276 states and 788 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 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) [2021-10-08 16:36:31,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:31,538 INFO L93 Difference]: Finished difference Result 362 states and 972 transitions. [2021-10-08 16:36:31,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:36:31,542 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 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 7 [2021-10-08 16:36:31,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:31,545 INFO L225 Difference]: With dead ends: 362 [2021-10-08 16:36:31,545 INFO L226 Difference]: Without dead ends: 362 [2021-10-08 16:36:31,545 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 98.4ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:36:31,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-10-08 16:36:31,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 276. [2021-10-08 16:36:31,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 246 states have (on average 3.203252032520325) internal successors, (788), 275 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:31,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 788 transitions. [2021-10-08 16:36:31,555 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 788 transitions. Word has length 7 [2021-10-08 16:36:31,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:31,556 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 788 transitions. [2021-10-08 16:36:31,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 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) [2021-10-08 16:36:31,556 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 788 transitions. [2021-10-08 16:36:31,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 16:36:31,557 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:31,557 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1] [2021-10-08 16:36:31,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-08 16:36:31,769 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 [2021-10-08 16:36:31,770 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:36:31,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:31,771 INFO L82 PathProgramCache]: Analyzing trace with hash 2070346916, now seen corresponding path program 2 times [2021-10-08 16:36:31,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:31,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635918940] [2021-10-08 16:36:31,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:36:31,772 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:31,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:31,774 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) [2021-10-08 16:36:31,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-08 16:36:31,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:36:31,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:36:31,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 16:36:31,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:31,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:36:31,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:36:32,120 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-08 16:36:32,121 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 [2021-10-08 16:36:32,459 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:32,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:36:33,997 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:36:33,998 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:36:33,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635918940] [2021-10-08 16:36:33,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635918940] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:36:33,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:36:33,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 16:36:33,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851766883] [2021-10-08 16:36:33,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 16:36:33,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:36:33,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 16:36:34,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:36:34,000 INFO L87 Difference]: Start difference. First operand 276 states and 788 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) [2021-10-08 16:36:55,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:36:55,804 INFO L93 Difference]: Finished difference Result 2125 states and 6153 transitions. [2021-10-08 16:36:55,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 16:36:55,807 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 [2021-10-08 16:36:55,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:36:55,824 INFO L225 Difference]: With dead ends: 2125 [2021-10-08 16:36:55,824 INFO L226 Difference]: Without dead ends: 2125 [2021-10-08 16:36:55,825 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 6549.7ms TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-10-08 16:36:55,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2021-10-08 16:36:55,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 290. [2021-10-08 16:36:55,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 260 states have (on average 3.1384615384615384) internal successors, (816), 289 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:36:55,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 816 transitions. [2021-10-08 16:36:55,853 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 816 transitions. Word has length 8 [2021-10-08 16:36:55,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:36:55,853 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 816 transitions. [2021-10-08 16:36:55,853 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) [2021-10-08 16:36:55,853 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 816 transitions. [2021-10-08 16:36:55,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 16:36:55,854 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:36:55,854 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:36:55,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-08 16:36:56,066 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 [2021-10-08 16:36:56,067 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:36:56,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:36:56,068 INFO L82 PathProgramCache]: Analyzing trace with hash 310510452, now seen corresponding path program 1 times [2021-10-08 16:36:56,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:36:56,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523413546] [2021-10-08 16:36:56,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:36:56,070 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:36:56,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:36:56,071 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) [2021-10-08 16:36:56,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-08 16:36:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:36:56,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 16:36:56,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:36:56,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:36:56,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:36:56,428 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-08 16:36:56,428 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 33 treesize of output 71 [2021-10-08 16:36:56,473 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 16:36:56,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 80 [2021-10-08 16:36:56,635 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-08 16:36:56,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 41 [2021-10-08 16:36:56,648 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:36:56,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 38 [2021-10-08 16:37:00,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:37:00,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:01,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:37:01,348 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:01,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523413546] [2021-10-08 16:37:01,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523413546] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:01,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:01,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-08 16:37:01,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374636084] [2021-10-08 16:37:01,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:37:01,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:01,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:37:01,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:37:01,351 INFO L87 Difference]: Start difference. First operand 290 states and 816 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) 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) [2021-10-08 16:37:13,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:13,937 INFO L93 Difference]: Finished difference Result 2801 states and 7275 transitions. [2021-10-08 16:37:13,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 16:37:13,938 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) 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 [2021-10-08 16:37:13,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:13,978 INFO L225 Difference]: With dead ends: 2801 [2021-10-08 16:37:13,978 INFO L226 Difference]: Without dead ends: 2801 [2021-10-08 16:37:13,979 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 13259.0ms TimeCoverageRelationStatistics Valid=310, Invalid=880, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 16:37:13,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2801 states. [2021-10-08 16:37:14,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2801 to 314. [2021-10-08 16:37:14,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 288 states have (on average 3.0694444444444446) internal successors, (884), 313 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:14,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 884 transitions. [2021-10-08 16:37:14,011 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 884 transitions. Word has length 8 [2021-10-08 16:37:14,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:14,012 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 884 transitions. [2021-10-08 16:37:14,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) 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) [2021-10-08 16:37:14,012 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 884 transitions. [2021-10-08 16:37:14,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 16:37:14,013 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:14,013 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:37:14,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:14,226 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 [2021-10-08 16:37:14,226 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:37:14,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:14,228 INFO L82 PathProgramCache]: Analyzing trace with hash 310510453, now seen corresponding path program 1 times [2021-10-08 16:37:14,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:14,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21066659] [2021-10-08 16:37:14,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:37:14,229 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:14,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:14,232 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) [2021-10-08 16:37:14,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-08 16:37:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:37:14,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 16:37:14,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:14,411 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 16:37:14,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-08 16:37:14,457 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-08 16:37:14,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-10-08 16:37:14,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:37:14,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:16,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:37:16,627 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:16,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21066659] [2021-10-08 16:37:16,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21066659] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:37:16,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:37:16,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-08 16:37:16,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002837976] [2021-10-08 16:37:16,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:37:16,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:16,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:37:16,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=18, Unknown=1, NotChecked=0, Total=30 [2021-10-08 16:37:16,629 INFO L87 Difference]: Start difference. First operand 314 states and 884 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 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) [2021-10-08 16:37:16,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:16,876 INFO L93 Difference]: Finished difference Result 252 states and 662 transitions. [2021-10-08 16:37:16,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:37:16,877 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 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 [2021-10-08 16:37:16,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:16,879 INFO L225 Difference]: With dead ends: 252 [2021-10-08 16:37:16,879 INFO L226 Difference]: Without dead ends: 252 [2021-10-08 16:37:16,879 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2065.0ms TimeCoverageRelationStatistics Valid=17, Invalid=24, Unknown=1, NotChecked=0, Total=42 [2021-10-08 16:37:16,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-10-08 16:37:16,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2021-10-08 16:37:16,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 238 states have (on average 2.7815126050420167) internal successors, (662), 251 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:16,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 662 transitions. [2021-10-08 16:37:16,888 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 662 transitions. Word has length 8 [2021-10-08 16:37:16,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:16,888 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 662 transitions. [2021-10-08 16:37:16,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 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) [2021-10-08 16:37:16,889 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 662 transitions. [2021-10-08 16:37:16,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 16:37:16,896 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:16,896 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:37:16,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:17,109 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 [2021-10-08 16:37:17,109 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:37:17,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:17,110 INFO L82 PathProgramCache]: Analyzing trace with hash -478571383, now seen corresponding path program 1 times [2021-10-08 16:37:17,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:17,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757057871] [2021-10-08 16:37:17,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:37:17,112 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:17,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:17,113 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) [2021-10-08 16:37:17,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-08 16:37:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:37:17,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 16:37:17,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:17,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-08 16:37:17,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:17,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:17,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:17,717 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:17,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757057871] [2021-10-08 16:37:17,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757057871] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:37:17,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:37:17,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-08 16:37:17,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036051008] [2021-10-08 16:37:17,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:37:17,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:17,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:37:17,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:37:17,719 INFO L87 Difference]: Start difference. First operand 252 states and 662 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:18,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:18,508 INFO L93 Difference]: Finished difference Result 460 states and 1254 transitions. [2021-10-08 16:37:18,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:37:18,510 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have 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 [2021-10-08 16:37:18,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:18,513 INFO L225 Difference]: With dead ends: 460 [2021-10-08 16:37:18,513 INFO L226 Difference]: Without dead ends: 460 [2021-10-08 16:37:18,513 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 326.7ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:37:18,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-10-08 16:37:18,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 320. [2021-10-08 16:37:18,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 306 states have (on average 3.2483660130718954) internal successors, (994), 319 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:18,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 994 transitions. [2021-10-08 16:37:18,529 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 994 transitions. Word has length 8 [2021-10-08 16:37:18,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:18,530 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 994 transitions. [2021-10-08 16:37:18,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:18,530 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 994 transitions. [2021-10-08 16:37:18,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 16:37:18,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:18,531 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:37:18,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:18,743 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 [2021-10-08 16:37:18,744 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:37:18,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:18,744 INFO L82 PathProgramCache]: Analyzing trace with hash -478571519, now seen corresponding path program 1 times [2021-10-08 16:37:18,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:18,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932022784] [2021-10-08 16:37:18,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:37:18,746 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:18,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:18,748 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) [2021-10-08 16:37:18,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-08 16:37:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:37:18,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:37:18,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:18,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:18,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:19,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:19,025 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:19,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932022784] [2021-10-08 16:37:19,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932022784] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:37:19,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:37:19,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-08 16:37:19,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824239128] [2021-10-08 16:37:19,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:37:19,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:19,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:37:19,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:37:19,027 INFO L87 Difference]: Start difference. First operand 320 states and 994 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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) [2021-10-08 16:37:19,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:19,299 INFO L93 Difference]: Finished difference Result 354 states and 1050 transitions. [2021-10-08 16:37:19,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:37:19,301 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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 [2021-10-08 16:37:19,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:19,304 INFO L225 Difference]: With dead ends: 354 [2021-10-08 16:37:19,304 INFO L226 Difference]: Without dead ends: 354 [2021-10-08 16:37:19,305 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 59.8ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:37:19,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-10-08 16:37:19,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 343. [2021-10-08 16:37:19,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 329 states have (on average 3.1580547112462005) internal successors, (1039), 342 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:19,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 1039 transitions. [2021-10-08 16:37:19,330 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 1039 transitions. Word has length 8 [2021-10-08 16:37:19,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:19,330 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 1039 transitions. [2021-10-08 16:37:19,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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) [2021-10-08 16:37:19,331 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 1039 transitions. [2021-10-08 16:37:19,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 16:37:19,332 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:19,332 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:37:19,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:19,542 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 [2021-10-08 16:37:19,543 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:37:19,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:19,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1502300325, now seen corresponding path program 1 times [2021-10-08 16:37:19,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:19,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [222470937] [2021-10-08 16:37:19,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:37:19,544 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:19,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:19,545 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) [2021-10-08 16:37:19,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-08 16:37:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:37:19,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:37:19,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:19,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:37:19,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:19,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:37:19,886 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:19,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [222470937] [2021-10-08 16:37:19,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [222470937] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:37:19,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:37:19,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-08 16:37:19,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486614417] [2021-10-08 16:37:19,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:37:19,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:19,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:37:19,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:37:19,889 INFO L87 Difference]: Start difference. First operand 343 states and 1039 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 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) [2021-10-08 16:37:20,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:20,276 INFO L93 Difference]: Finished difference Result 370 states and 1051 transitions. [2021-10-08 16:37:20,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:37:20,277 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 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 9 [2021-10-08 16:37:20,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:20,280 INFO L225 Difference]: With dead ends: 370 [2021-10-08 16:37:20,280 INFO L226 Difference]: Without dead ends: 370 [2021-10-08 16:37:20,281 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 111.2ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:37:20,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-10-08 16:37:20,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 314. [2021-10-08 16:37:20,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 300 states have (on average 3.1666666666666665) internal successors, (950), 313 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:20,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 950 transitions. [2021-10-08 16:37:20,290 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 950 transitions. Word has length 9 [2021-10-08 16:37:20,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:20,290 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 950 transitions. [2021-10-08 16:37:20,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 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) [2021-10-08 16:37:20,291 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 950 transitions. [2021-10-08 16:37:20,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 16:37:20,291 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:20,291 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:37:20,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:20,503 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 [2021-10-08 16:37:20,504 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:37:20,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:20,505 INFO L82 PathProgramCache]: Analyzing trace with hash 2047893200, now seen corresponding path program 1 times [2021-10-08 16:37:20,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:20,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661043878] [2021-10-08 16:37:20,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:37:20,506 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:20,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:20,507 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) [2021-10-08 16:37:20,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-08 16:37:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:37:20,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 16:37:20,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:20,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:37:20,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:20,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:37:20,999 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:20,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661043878] [2021-10-08 16:37:20,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661043878] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:20,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:20,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:37:20,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439797302] [2021-10-08 16:37:21,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:37:21,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:21,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:37:21,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:37:21,001 INFO L87 Difference]: Start difference. First operand 314 states and 950 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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) [2021-10-08 16:37:21,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:21,869 INFO L93 Difference]: Finished difference Result 562 states and 1576 transitions. [2021-10-08 16:37:21,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:37:21,870 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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 [2021-10-08 16:37:21,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:21,874 INFO L225 Difference]: With dead ends: 562 [2021-10-08 16:37:21,875 INFO L226 Difference]: Without dead ends: 562 [2021-10-08 16:37:21,875 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 211.3ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:37:21,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-10-08 16:37:21,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 386. [2021-10-08 16:37:21,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 372 states have (on average 3.1908602150537635) internal successors, (1187), 385 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:21,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1187 transitions. [2021-10-08 16:37:21,889 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1187 transitions. Word has length 10 [2021-10-08 16:37:21,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:21,889 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 1187 transitions. [2021-10-08 16:37:21,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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) [2021-10-08 16:37:21,890 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1187 transitions. [2021-10-08 16:37:21,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 16:37:21,890 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:21,890 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:37:21,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:22,103 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 [2021-10-08 16:37:22,104 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:37:22,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:22,104 INFO L82 PathProgramCache]: Analyzing trace with hash 2047881920, now seen corresponding path program 1 times [2021-10-08 16:37:22,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:22,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296266975] [2021-10-08 16:37:22,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:37:22,106 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:22,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:22,107 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) [2021-10-08 16:37:22,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-08 16:37:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:37:22,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:37:22,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:22,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:37:22,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:22,457 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 11 treesize of output 9 [2021-10-08 16:37:22,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:37:22,623 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:22,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [296266975] [2021-10-08 16:37:22,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [296266975] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:37:22,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:37:22,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-08 16:37:22,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129254899] [2021-10-08 16:37:22,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:37:22,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:22,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:37:22,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:37:22,626 INFO L87 Difference]: Start difference. First operand 386 states and 1187 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 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) [2021-10-08 16:37:23,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:23,396 INFO L93 Difference]: Finished difference Result 640 states and 1862 transitions. [2021-10-08 16:37:23,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:37:23,397 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 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 [2021-10-08 16:37:23,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:23,401 INFO L225 Difference]: With dead ends: 640 [2021-10-08 16:37:23,401 INFO L226 Difference]: Without dead ends: 640 [2021-10-08 16:37:23,402 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 331.8ms TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:37:23,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-10-08 16:37:23,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 370. [2021-10-08 16:37:23,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 359 states have (on average 3.1754874651810585) internal successors, (1140), 369 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:23,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1140 transitions. [2021-10-08 16:37:23,413 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1140 transitions. Word has length 10 [2021-10-08 16:37:23,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:23,413 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 1140 transitions. [2021-10-08 16:37:23,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 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) [2021-10-08 16:37:23,413 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1140 transitions. [2021-10-08 16:37:23,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 16:37:23,414 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:23,414 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:37:23,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-10-08 16:37:23,627 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 [2021-10-08 16:37:23,627 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:37:23,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:23,628 INFO L82 PathProgramCache]: Analyzing trace with hash 2052516577, now seen corresponding path program 1 times [2021-10-08 16:37:23,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:23,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688186662] [2021-10-08 16:37:23,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:37:23,629 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:23,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:23,632 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) [2021-10-08 16:37:23,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-08 16:37:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:37:23,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 16:37:23,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:23,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:37:23,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:37:24,037 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-08 16:37:24,038 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 33 treesize of output 71 [2021-10-08 16:37:24,090 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 16:37:24,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 80 [2021-10-08 16:37:24,221 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-08 16:37:24,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2021-10-08 16:37:24,232 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:37:24,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 39 [2021-10-08 16:37:26,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:37:26,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:27,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:37:27,045 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:27,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688186662] [2021-10-08 16:37:27,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688186662] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:27,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:27,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-08 16:37:27,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511337494] [2021-10-08 16:37:27,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:37:27,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:27,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:37:27,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:37:27,048 INFO L87 Difference]: Start difference. First operand 370 states and 1140 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 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) [2021-10-08 16:37:47,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:47,212 INFO L93 Difference]: Finished difference Result 1913 states and 5547 transitions. [2021-10-08 16:37:47,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 16:37:47,215 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 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 [2021-10-08 16:37:47,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:47,228 INFO L225 Difference]: With dead ends: 1913 [2021-10-08 16:37:47,228 INFO L226 Difference]: Without dead ends: 1913 [2021-10-08 16:37:47,229 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 19547.0ms TimeCoverageRelationStatistics Valid=310, Invalid=880, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 16:37:47,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2021-10-08 16:37:47,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 428. [2021-10-08 16:37:47,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 417 states have (on average 3.13189448441247) internal successors, (1306), 427 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:47,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 1306 transitions. [2021-10-08 16:37:47,255 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 1306 transitions. Word has length 10 [2021-10-08 16:37:47,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:47,256 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 1306 transitions. [2021-10-08 16:37:47,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 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) [2021-10-08 16:37:47,256 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 1306 transitions. [2021-10-08 16:37:47,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:37:47,257 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:47,257 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:37:47,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:47,470 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 [2021-10-08 16:37:47,471 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:37:47,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:47,471 INFO L82 PathProgramCache]: Analyzing trace with hash 221229976, now seen corresponding path program 2 times [2021-10-08 16:37:47,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:47,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159542851] [2021-10-08 16:37:47,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:37:47,472 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:47,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:47,474 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) [2021-10-08 16:37:47,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-08 16:37:47,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:37:47,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:37:47,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 16:37:47,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:47,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:37:47,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:37:47,828 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-08 16:37:47,829 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 33 treesize of output 71 [2021-10-08 16:37:47,880 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 16:37:47,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 80 [2021-10-08 16:37:48,046 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-08 16:37:48,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2021-10-08 16:37:48,060 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:37:48,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 32 [2021-10-08 16:37:48,307 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-08 16:37:48,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:48,908 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-08 16:37:48,909 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:48,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159542851] [2021-10-08 16:37:48,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159542851] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:37:48,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:37:48,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-08 16:37:48,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469539736] [2021-10-08 16:37:48,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:37:48,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:48,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:37:48,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:37:48,912 INFO L87 Difference]: Start difference. First operand 428 states and 1306 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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) [2021-10-08 16:37:49,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:49,898 INFO L93 Difference]: Finished difference Result 558 states and 1575 transitions. [2021-10-08 16:37:49,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:37:49,900 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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 11 [2021-10-08 16:37:49,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:49,904 INFO L225 Difference]: With dead ends: 558 [2021-10-08 16:37:49,904 INFO L226 Difference]: Without dead ends: 558 [2021-10-08 16:37:49,905 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 402.2ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:37:49,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-10-08 16:37:49,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 408. [2021-10-08 16:37:49,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 397 states have (on average 3.022670025188917) internal successors, (1200), 407 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:49,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 1200 transitions. [2021-10-08 16:37:49,918 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 1200 transitions. Word has length 11 [2021-10-08 16:37:49,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:49,920 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 1200 transitions. [2021-10-08 16:37:49,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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) [2021-10-08 16:37:49,921 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 1200 transitions. [2021-10-08 16:37:49,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:37:49,921 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:49,921 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:37:49,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:50,135 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 [2021-10-08 16:37:50,135 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:37:50,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:50,137 INFO L82 PathProgramCache]: Analyzing trace with hash -796488328, now seen corresponding path program 1 times [2021-10-08 16:37:50,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:50,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948290153] [2021-10-08 16:37:50,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:37:50,139 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:50,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:50,140 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) [2021-10-08 16:37:50,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-08 16:37:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:37:50,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 16:37:50,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:50,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:37:50,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:50,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:37:50,742 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:50,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948290153] [2021-10-08 16:37:50,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [948290153] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:50,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:50,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:37:50,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379036012] [2021-10-08 16:37:50,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:37:50,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:50,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:37:50,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:37:50,746 INFO L87 Difference]: Start difference. First operand 408 states and 1200 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 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) [2021-10-08 16:37:51,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:37:51,462 INFO L93 Difference]: Finished difference Result 504 states and 1318 transitions. [2021-10-08 16:37:51,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:37:51,463 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 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 11 [2021-10-08 16:37:51,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:37:51,466 INFO L225 Difference]: With dead ends: 504 [2021-10-08 16:37:51,466 INFO L226 Difference]: Without dead ends: 504 [2021-10-08 16:37:51,466 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 214.6ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:37:51,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2021-10-08 16:37:51,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 408. [2021-10-08 16:37:51,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 397 states have (on average 2.924433249370277) internal successors, (1161), 407 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:37:51,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 1161 transitions. [2021-10-08 16:37:51,490 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 1161 transitions. Word has length 11 [2021-10-08 16:37:51,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:37:51,490 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 1161 transitions. [2021-10-08 16:37:51,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 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) [2021-10-08 16:37:51,491 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 1161 transitions. [2021-10-08 16:37:51,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:37:51,491 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:37:51,492 INFO L512 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2021-10-08 16:37:51,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-08 16:37:51,706 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 [2021-10-08 16:37:51,706 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:37:51,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:37:51,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1673033881, now seen corresponding path program 1 times [2021-10-08 16:37:51,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:37:51,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187324488] [2021-10-08 16:37:51,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:37:51,709 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:37:51,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:37:51,711 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) [2021-10-08 16:37:51,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-08 16:37:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:37:51,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 16:37:51,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:37:51,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-08 16:37:52,347 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:52,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:37:55,034 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:37:55,034 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:37:55,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187324488] [2021-10-08 16:37:55,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187324488] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:37:55,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:37:55,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 16:37:55,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35470868] [2021-10-08 16:37:55,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 16:37:55,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:37:55,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 16:37:55,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:37:55,037 INFO L87 Difference]: Start difference. First operand 408 states and 1161 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:27,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:38:27,647 INFO L93 Difference]: Finished difference Result 6145 states and 18145 transitions. [2021-10-08 16:38:27,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 16:38:27,650 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-08 16:38:27,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:38:27,677 INFO L225 Difference]: With dead ends: 6145 [2021-10-08 16:38:27,678 INFO L226 Difference]: Without dead ends: 6145 [2021-10-08 16:38:27,678 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 11008.1ms TimeCoverageRelationStatistics Valid=278, Invalid=478, Unknown=0, NotChecked=0, Total=756 [2021-10-08 16:38:27,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6145 states. [2021-10-08 16:38:27,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6145 to 448. [2021-10-08 16:38:27,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 437 states have (on average 2.839816933638444) internal successors, (1241), 447 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:27,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 1241 transitions. [2021-10-08 16:38:27,733 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 1241 transitions. Word has length 11 [2021-10-08 16:38:27,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:38:27,734 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 1241 transitions. [2021-10-08 16:38:27,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:27,734 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1241 transitions. [2021-10-08 16:38:27,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 16:38:27,735 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:38:27,735 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:38:27,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-10-08 16:38:27,947 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 [2021-10-08 16:38:27,948 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:38:27,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:38:27,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1494030764, now seen corresponding path program 2 times [2021-10-08 16:38:27,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:38:27,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077416956] [2021-10-08 16:38:27,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:38:27,950 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:38:27,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:38:27,951 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) [2021-10-08 16:38:27,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-08 16:38:28,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:38:28,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:38:28,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 16:38:28,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:38:28,411 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-08 16:38:28,412 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 33 treesize of output 71 [2021-10-08 16:38:28,451 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 16:38:28,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 80 [2021-10-08 16:38:29,546 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-08 16:38:29,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 38 [2021-10-08 16:38:29,559 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:38:29,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 37 [2021-10-08 16:38:29,896 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:38:29,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:38:31,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:38:31,405 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:38:31,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077416956] [2021-10-08 16:38:31,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077416956] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:38:31,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:38:31,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-08 16:38:31,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808610738] [2021-10-08 16:38:31,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:38:31,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:38:31,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:38:31,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:38:31,407 INFO L87 Difference]: Start difference. First operand 448 states and 1241 transitions. Second operand has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:38,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:38:38,857 INFO L93 Difference]: Finished difference Result 993 states and 2512 transitions. [2021-10-08 16:38:38,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 16:38:38,859 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have 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 [2021-10-08 16:38:38,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:38:38,863 INFO L225 Difference]: With dead ends: 993 [2021-10-08 16:38:38,863 INFO L226 Difference]: Without dead ends: 993 [2021-10-08 16:38:38,863 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 6328.6ms TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2021-10-08 16:38:38,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2021-10-08 16:38:38,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 358. [2021-10-08 16:38:38,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 347 states have (on average 2.717579250720461) internal successors, (943), 357 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:38,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 943 transitions. [2021-10-08 16:38:38,878 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 943 transitions. Word has length 12 [2021-10-08 16:38:38,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:38:38,878 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 943 transitions. [2021-10-08 16:38:38,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:38,879 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 943 transitions. [2021-10-08 16:38:38,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 16:38:38,880 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:38:38,880 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:38:38,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-08 16:38:39,094 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 [2021-10-08 16:38:39,094 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:38:39,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:38:39,095 INFO L82 PathProgramCache]: Analyzing trace with hash 781456911, now seen corresponding path program 1 times [2021-10-08 16:38:39,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:38:39,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579250588] [2021-10-08 16:38:39,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:38:39,096 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:38:39,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:38:39,097 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) [2021-10-08 16:38:39,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-08 16:38:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:38:39,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 16:38:39,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:38:39,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-08 16:38:39,647 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:38:39,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:38:40,695 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:38:40,696 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:38:40,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579250588] [2021-10-08 16:38:40,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [579250588] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:38:40,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:38:40,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:38:40,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218735497] [2021-10-08 16:38:40,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 16:38:40,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:38:40,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 16:38:40,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:38:40,699 INFO L87 Difference]: Start difference. First operand 358 states and 943 transitions. Second operand has 13 states, 13 states have (on average 1.6923076923076923) 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) [2021-10-08 16:38:43,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:38:43,911 INFO L93 Difference]: Finished difference Result 796 states and 1986 transitions. [2021-10-08 16:38:43,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:38:43,912 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6923076923076923) 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 13 [2021-10-08 16:38:43,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:38:43,919 INFO L225 Difference]: With dead ends: 796 [2021-10-08 16:38:43,920 INFO L226 Difference]: Without dead ends: 794 [2021-10-08 16:38:43,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1343.0ms TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:38:43,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2021-10-08 16:38:43,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 429. [2021-10-08 16:38:43,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 416 states have (on average 2.8028846153846154) internal successors, (1166), 428 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:43,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 1166 transitions. [2021-10-08 16:38:43,946 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 1166 transitions. Word has length 13 [2021-10-08 16:38:43,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:38:43,946 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 1166 transitions. [2021-10-08 16:38:43,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6923076923076923) 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) [2021-10-08 16:38:43,947 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 1166 transitions. [2021-10-08 16:38:43,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 16:38:43,949 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:38:43,949 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:38:43,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-10-08 16:38:44,163 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 [2021-10-08 16:38:44,164 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:38:44,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:38:44,165 INFO L82 PathProgramCache]: Analyzing trace with hash 929693933, now seen corresponding path program 1 times [2021-10-08 16:38:44,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:38:44,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451200767] [2021-10-08 16:38:44,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:38:44,166 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:38:44,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:38:44,167 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) [2021-10-08 16:38:44,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-08 16:38:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:38:44,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 16:38:44,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:38:44,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-08 16:38:44,696 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:38:44,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:38:45,733 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:38:45,734 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:38:45,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451200767] [2021-10-08 16:38:45,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451200767] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:38:45,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:38:45,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:38:45,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261786336] [2021-10-08 16:38:45,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 16:38:45,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:38:45,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 16:38:45,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:38:45,735 INFO L87 Difference]: Start difference. First operand 429 states and 1166 transitions. Second operand has 13 states, 13 states have (on average 1.6923076923076923) 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) [2021-10-08 16:38:48,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:38:48,350 INFO L93 Difference]: Finished difference Result 620 states and 1541 transitions. [2021-10-08 16:38:48,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:38:48,352 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6923076923076923) 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 13 [2021-10-08 16:38:48,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:38:48,354 INFO L225 Difference]: With dead ends: 620 [2021-10-08 16:38:48,354 INFO L226 Difference]: Without dead ends: 610 [2021-10-08 16:38:48,355 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1397.4ms TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:38:48,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-10-08 16:38:48,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 358. [2021-10-08 16:38:48,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 347 states have (on average 2.717579250720461) internal successors, (943), 357 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:48,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 943 transitions. [2021-10-08 16:38:48,367 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 943 transitions. Word has length 13 [2021-10-08 16:38:48,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:38:48,368 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 943 transitions. [2021-10-08 16:38:48,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6923076923076923) 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) [2021-10-08 16:38:48,368 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 943 transitions. [2021-10-08 16:38:48,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 16:38:48,369 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:38:48,369 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-08 16:38:48,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-08 16:38:48,584 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 [2021-10-08 16:38:48,584 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:38:48,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:38:48,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1790752373, now seen corresponding path program 2 times [2021-10-08 16:38:48,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:38:48,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297096353] [2021-10-08 16:38:48,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:38:48,586 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:38:48,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:38:48,588 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) [2021-10-08 16:38:48,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-08 16:38:48,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:38:48,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:38:48,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 16:38:48,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:38:48,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-08 16:38:49,265 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:38:49,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:38:50,272 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:38:50,273 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:38:50,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1297096353] [2021-10-08 16:38:50,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1297096353] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:38:50,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:38:50,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 16:38:50,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128554573] [2021-10-08 16:38:50,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:38:50,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:38:50,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:38:50,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:38:50,275 INFO L87 Difference]: Start difference. First operand 358 states and 943 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 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) [2021-10-08 16:38:53,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:38:53,764 INFO L93 Difference]: Finished difference Result 936 states and 2477 transitions. [2021-10-08 16:38:53,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 16:38:53,765 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 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 [2021-10-08 16:38:53,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:38:53,769 INFO L225 Difference]: With dead ends: 936 [2021-10-08 16:38:53,769 INFO L226 Difference]: Without dead ends: 936 [2021-10-08 16:38:53,770 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 2398.1ms TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:38:53,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2021-10-08 16:38:53,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 486. [2021-10-08 16:38:53,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 475 states have (on average 3.1136842105263156) internal successors, (1479), 485 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:38:53,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 1479 transitions. [2021-10-08 16:38:53,786 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 1479 transitions. Word has length 14 [2021-10-08 16:38:53,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:38:53,786 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 1479 transitions. [2021-10-08 16:38:53,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 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) [2021-10-08 16:38:53,786 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 1479 transitions. [2021-10-08 16:38:53,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 16:38:53,787 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:38:53,787 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-08 16:38:53,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-08 16:38:54,001 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 [2021-10-08 16:38:54,002 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:38:54,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:38:54,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1790752436, now seen corresponding path program 2 times [2021-10-08 16:38:54,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:38:54,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353441182] [2021-10-08 16:38:54,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:38:54,006 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:38:54,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:38:54,008 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) [2021-10-08 16:38:54,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-08 16:38:54,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:38:54,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:38:54,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 16:38:54,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:38:54,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:38:54,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:38:54,510 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-08 16:38:54,510 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 33 treesize of output 71 [2021-10-08 16:38:54,553 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 16:38:54,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 80 [2021-10-08 16:38:54,688 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-08 16:38:54,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2021-10-08 16:38:54,703 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:38:54,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 32 [2021-10-08 16:38:56,395 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:38:56,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:38:57,910 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:38:57,911 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:38:57,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353441182] [2021-10-08 16:38:57,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353441182] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:38:57,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:38:57,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-08 16:38:57,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40538218] [2021-10-08 16:38:57,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:38:57,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:38:57,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:38:57,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:38:57,914 INFO L87 Difference]: Start difference. First operand 486 states and 1479 transitions. Second operand has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:06,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:39:06,064 INFO L93 Difference]: Finished difference Result 888 states and 2307 transitions. [2021-10-08 16:39:06,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:39:06,066 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have 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 [2021-10-08 16:39:06,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:39:06,071 INFO L225 Difference]: With dead ends: 888 [2021-10-08 16:39:06,071 INFO L226 Difference]: Without dead ends: 888 [2021-10-08 16:39:06,072 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 7542.7ms TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:39:06,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2021-10-08 16:39:06,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 486. [2021-10-08 16:39:06,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 475 states have (on average 2.9789473684210526) internal successors, (1415), 485 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:06,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 1415 transitions. [2021-10-08 16:39:06,088 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 1415 transitions. Word has length 14 [2021-10-08 16:39:06,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:39:06,088 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 1415 transitions. [2021-10-08 16:39:06,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:06,089 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 1415 transitions. [2021-10-08 16:39:06,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 16:39:06,092 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:39:06,092 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:39:06,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-08 16:39:06,305 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 [2021-10-08 16:39:06,305 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:39:06,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:39:06,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1642515351, now seen corresponding path program 2 times [2021-10-08 16:39:06,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:39:06,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757250566] [2021-10-08 16:39:06,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:39:06,307 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:39:06,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:39:06,308 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) [2021-10-08 16:39:06,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-08 16:39:06,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:39:06,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:39:06,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 16:39:06,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:39:06,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-08 16:39:06,985 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:39:06,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:39:08,055 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:39:08,055 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:39:08,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757250566] [2021-10-08 16:39:08,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757250566] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:39:08,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:39:08,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-08 16:39:08,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972227399] [2021-10-08 16:39:08,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 16:39:08,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:39:08,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 16:39:08,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:39:08,057 INFO L87 Difference]: Start difference. First operand 486 states and 1415 transitions. Second operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:13,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:39:13,794 INFO L93 Difference]: Finished difference Result 1229 states and 3425 transitions. [2021-10-08 16:39:13,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 16:39:13,796 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have 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 [2021-10-08 16:39:13,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:39:13,800 INFO L225 Difference]: With dead ends: 1229 [2021-10-08 16:39:13,800 INFO L226 Difference]: Without dead ends: 1229 [2021-10-08 16:39:13,801 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 3003.8ms TimeCoverageRelationStatistics Valid=189, Invalid=567, Unknown=0, NotChecked=0, Total=756 [2021-10-08 16:39:13,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2021-10-08 16:39:13,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 646. [2021-10-08 16:39:13,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 635 states have (on average 3.5070866141732284) internal successors, (2227), 645 states have internal predecessors, (2227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:13,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 2227 transitions. [2021-10-08 16:39:13,821 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 2227 transitions. Word has length 14 [2021-10-08 16:39:13,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:39:13,822 INFO L470 AbstractCegarLoop]: Abstraction has 646 states and 2227 transitions. [2021-10-08 16:39:13,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:13,822 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 2227 transitions. [2021-10-08 16:39:13,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 16:39:13,823 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:39:13,823 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:39:13,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-08 16:39:14,037 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 [2021-10-08 16:39:14,038 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:39:14,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:39:14,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1642515487, now seen corresponding path program 3 times [2021-10-08 16:39:14,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:39:14,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1990663668] [2021-10-08 16:39:14,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:39:14,041 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:39:14,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:39:14,042 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) [2021-10-08 16:39:14,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-08 16:39:14,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 16:39:14,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:39:14,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 16:39:14,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:39:14,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:39:14,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:39:14,583 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-08 16:39:14,584 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 33 treesize of output 71 [2021-10-08 16:39:14,639 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 16:39:14,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 80 [2021-10-08 16:39:14,811 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-08 16:39:14,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 35 [2021-10-08 16:39:14,823 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:39:14,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 34 [2021-10-08 16:39:15,376 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:39:15,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:39:16,603 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:39:16,603 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:39:16,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1990663668] [2021-10-08 16:39:16,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1990663668] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:39:16,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:39:16,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 16:39:16,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400815712] [2021-10-08 16:39:16,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 16:39:16,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:39:16,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 16:39:16,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:39:16,605 INFO L87 Difference]: Start difference. First operand 646 states and 2227 transitions. Second operand has 16 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 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) [2021-10-08 16:39:23,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:39:23,042 INFO L93 Difference]: Finished difference Result 1037 states and 2877 transitions. [2021-10-08 16:39:23,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 16:39:23,044 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 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 14 [2021-10-08 16:39:23,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:39:23,046 INFO L225 Difference]: With dead ends: 1037 [2021-10-08 16:39:23,047 INFO L226 Difference]: Without dead ends: 1037 [2021-10-08 16:39:23,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2961.9ms TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:39:23,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2021-10-08 16:39:23,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 646. [2021-10-08 16:39:23,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 635 states have (on average 3.2551181102362206) internal successors, (2067), 645 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:23,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 2067 transitions. [2021-10-08 16:39:23,067 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 2067 transitions. Word has length 14 [2021-10-08 16:39:23,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:39:23,067 INFO L470 AbstractCegarLoop]: Abstraction has 646 states and 2067 transitions. [2021-10-08 16:39:23,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 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) [2021-10-08 16:39:23,067 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 2067 transitions. [2021-10-08 16:39:23,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:39:23,068 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:39:23,069 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:39:23,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-08 16:39:23,281 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 [2021-10-08 16:39:23,282 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:39:23,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:39:23,282 INFO L82 PathProgramCache]: Analyzing trace with hash -291504295, now seen corresponding path program 1 times [2021-10-08 16:39:23,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:39:23,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70539998] [2021-10-08 16:39:23,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:39:23,283 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:39:23,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:39:23,284 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) [2021-10-08 16:39:23,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-08 16:39:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:39:23,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 16:39:23,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:39:24,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:24,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:39:25,786 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-10-08 16:39:25,787 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 412 treesize of output 472 [2021-10-08 16:39:25,855 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-08 16:39:25,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 472 treesize of output 476 [2021-10-08 16:39:25,937 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-08 16:39:25,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 476 treesize of output 480 [2021-10-08 16:39:29,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:29,051 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:39:29,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70539998] [2021-10-08 16:39:29,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70539998] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:39:29,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:39:29,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-10-08 16:39:29,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474616976] [2021-10-08 16:39:29,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:39:29,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:39:29,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:39:29,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:39:29,053 INFO L87 Difference]: Start difference. First operand 646 states and 2067 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 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) [2021-10-08 16:39:31,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:39:31,117 INFO L93 Difference]: Finished difference Result 771 states and 2272 transitions. [2021-10-08 16:39:31,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 16:39:31,118 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 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 15 [2021-10-08 16:39:31,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:39:31,119 INFO L225 Difference]: With dead ends: 771 [2021-10-08 16:39:31,119 INFO L226 Difference]: Without dead ends: 693 [2021-10-08 16:39:31,120 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1790.9ms TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:39:31,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2021-10-08 16:39:31,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 651. [2021-10-08 16:39:31,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 640 states have (on average 3.2375) internal successors, (2072), 650 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:39:31,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 2072 transitions. [2021-10-08 16:39:31,133 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 2072 transitions. Word has length 15 [2021-10-08 16:39:31,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:39:31,134 INFO L470 AbstractCegarLoop]: Abstraction has 651 states and 2072 transitions. [2021-10-08 16:39:31,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 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) [2021-10-08 16:39:31,134 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 2072 transitions. [2021-10-08 16:39:31,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:39:31,135 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:39:31,135 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1] [2021-10-08 16:39:31,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-08 16:39:31,342 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 [2021-10-08 16:39:31,342 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:39:31,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:39:31,343 INFO L82 PathProgramCache]: Analyzing trace with hash 2137951908, now seen corresponding path program 3 times [2021-10-08 16:39:31,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:39:31,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855254899] [2021-10-08 16:39:31,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:39:31,344 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:39:31,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:39:31,345 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) [2021-10-08 16:39:31,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-08 16:39:31,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-08 16:39:31,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:39:31,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 16:39:31,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:39:31,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:39:31,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:39:32,036 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-08 16:39:32,039 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 [2021-10-08 16:39:32,764 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:32,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:39:37,838 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:39:37,838 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:39:37,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855254899] [2021-10-08 16:39:37,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855254899] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:39:37,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:39:37,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2021-10-08 16:39:37,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116789784] [2021-10-08 16:39:37,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-08 16:39:37,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:39:37,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-08 16:39:37,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-10-08 16:39:37,840 INFO L87 Difference]: Start difference. First operand 651 states and 2072 transitions. Second operand has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 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) [2021-10-08 16:39:50,333 WARN L207 SmtUtils]: Spent 8.27 s on a formula simplification that was a NOOP. DAG size: 168 [2021-10-08 16:39:57,752 WARN L207 SmtUtils]: Spent 6.48 s on a formula simplification that was a NOOP. DAG size: 157 [2021-10-08 16:40:04,186 WARN L207 SmtUtils]: Spent 5.26 s on a formula simplification that was a NOOP. DAG size: 146 [2021-10-08 16:40:38,706 WARN L207 SmtUtils]: Spent 5.32 s on a formula simplification that was a NOOP. DAG size: 136 [2021-10-08 16:41:03,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:41:03,899 INFO L93 Difference]: Finished difference Result 8629 states and 28887 transitions. [2021-10-08 16:41:03,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 16:41:03,904 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 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 [2021-10-08 16:41:03,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:41:03,930 INFO L225 Difference]: With dead ends: 8629 [2021-10-08 16:41:03,930 INFO L226 Difference]: Without dead ends: 8629 [2021-10-08 16:41:03,931 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 52009.5ms TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 16:41:03,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8629 states. [2021-10-08 16:41:04,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8629 to 667. [2021-10-08 16:41:04,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 656 states have (on average 3.207317073170732) internal successors, (2104), 666 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:04,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 2104 transitions. [2021-10-08 16:41:04,019 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 2104 transitions. Word has length 16 [2021-10-08 16:41:04,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:41:04,019 INFO L470 AbstractCegarLoop]: Abstraction has 667 states and 2104 transitions. [2021-10-08 16:41:04,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 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) [2021-10-08 16:41:04,020 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 2104 transitions. [2021-10-08 16:41:04,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:41:04,020 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:41:04,021 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:41:04,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-08 16:41:04,221 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 [2021-10-08 16:41:04,222 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:41:04,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:41:04,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1824749003, now seen corresponding path program 1 times [2021-10-08 16:41:04,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:41:04,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942962973] [2021-10-08 16:41:04,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:41:04,224 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:41:04,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:41:04,225 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:41:04,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-08 16:41:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:41:04,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 16:41:04,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:41:05,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:05,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:41:06,673 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-10-08 16:41:06,673 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 405 treesize of output 465 [2021-10-08 16:41:06,731 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-08 16:41:06,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 465 treesize of output 469 [2021-10-08 16:41:06,788 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-08 16:41:06,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 469 treesize of output 473 [2021-10-08 16:41:09,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:09,602 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:41:09,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942962973] [2021-10-08 16:41:09,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942962973] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:41:09,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:41:09,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 16:41:09,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817393504] [2021-10-08 16:41:09,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 16:41:09,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:41:09,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 16:41:09,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:41:09,604 INFO L87 Difference]: Start difference. First operand 667 states and 2104 transitions. Second operand has 16 states, 15 states have (on average 2.1333333333333333) 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) [2021-10-08 16:41:14,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:41:14,575 INFO L93 Difference]: Finished difference Result 1500 states and 4537 transitions. [2021-10-08 16:41:14,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 16:41:14,577 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.1333333333333333) 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 [2021-10-08 16:41:14,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:41:14,580 INFO L225 Difference]: With dead ends: 1500 [2021-10-08 16:41:14,580 INFO L226 Difference]: Without dead ends: 1435 [2021-10-08 16:41:14,581 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 4177.6ms TimeCoverageRelationStatistics Valid=234, Invalid=578, Unknown=0, NotChecked=0, Total=812 [2021-10-08 16:41:14,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2021-10-08 16:41:14,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 713. [2021-10-08 16:41:14,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 702 states have (on average 3.128205128205128) internal successors, (2196), 712 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:14,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 2196 transitions. [2021-10-08 16:41:14,603 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 2196 transitions. Word has length 16 [2021-10-08 16:41:14,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:41:14,603 INFO L470 AbstractCegarLoop]: Abstraction has 713 states and 2196 transitions. [2021-10-08 16:41:14,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.1333333333333333) 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) [2021-10-08 16:41:14,604 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 2196 transitions. [2021-10-08 16:41:14,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:41:14,606 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:41:14,606 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:41:14,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-08 16:41:14,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:41:14,820 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:41:14,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:41:14,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1164603715, now seen corresponding path program 2 times [2021-10-08 16:41:14,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:41:14,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2094298631] [2021-10-08 16:41:14,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:41:14,822 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:41:14,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:41:14,823 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:41:14,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-08 16:41:15,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:41:15,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:41:15,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 16:41:15,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:41:17,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:41:17,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:41:19,647 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-10-08 16:41:19,647 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 412 treesize of output 472 [2021-10-08 16:41:19,717 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-08 16:41:19,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 472 treesize of output 476 [2021-10-08 16:41:19,790 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-08 16:41:19,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 476 treesize of output 480 [2021-10-08 16:41:23,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:41:23,122 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:41:23,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2094298631] [2021-10-08 16:41:23,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2094298631] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:41:23,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:41:23,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-10-08 16:41:23,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972750112] [2021-10-08 16:41:23,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:41:23,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:41:23,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:41:23,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=130, Unknown=1, NotChecked=0, Total=182 [2021-10-08 16:41:23,124 INFO L87 Difference]: Start difference. First operand 713 states and 2196 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) 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) [2021-10-08 16:41:24,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:41:24,401 INFO L93 Difference]: Finished difference Result 744 states and 2243 transitions. [2021-10-08 16:41:24,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 16:41:24,402 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) 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 [2021-10-08 16:41:24,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:41:24,403 INFO L225 Difference]: With dead ends: 744 [2021-10-08 16:41:24,403 INFO L226 Difference]: Without dead ends: 717 [2021-10-08 16:41:24,404 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 3411.5ms TimeCoverageRelationStatistics Valid=128, Invalid=291, Unknown=1, NotChecked=0, Total=420 [2021-10-08 16:41:24,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2021-10-08 16:41:24,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 689. [2021-10-08 16:41:24,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 678 states have (on average 3.1755162241887906) internal successors, (2153), 688 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:24,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 2153 transitions. [2021-10-08 16:41:24,416 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 2153 transitions. Word has length 16 [2021-10-08 16:41:24,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:41:24,416 INFO L470 AbstractCegarLoop]: Abstraction has 689 states and 2153 transitions. [2021-10-08 16:41:24,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) 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) [2021-10-08 16:41:24,416 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 2153 transitions. [2021-10-08 16:41:24,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:41:24,417 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:41:24,417 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:41:24,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-08 16:41:24,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:41:24,618 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:41:24,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:41:24,619 INFO L82 PathProgramCache]: Analyzing trace with hash -152027611, now seen corresponding path program 3 times [2021-10-08 16:41:24,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:41:24,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553973475] [2021-10-08 16:41:24,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:41:24,620 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:41:24,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:41:24,621 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:41:24,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-08 16:41:24,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-08 16:41:24,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:41:24,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 16:41:25,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:41:25,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:41:25,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:41:27,848 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-10-08 16:41:27,849 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 428 treesize of output 488 [2021-10-08 16:41:27,940 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-08 16:41:27,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 488 treesize of output 492 [2021-10-08 16:41:28,020 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-08 16:41:28,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 492 treesize of output 496 [2021-10-08 16:41:32,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 16:41:32,971 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:41:32,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553973475] [2021-10-08 16:41:32,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553973475] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:41:32,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:41:32,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-10-08 16:41:32,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419131827] [2021-10-08 16:41:32,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:41:32,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:41:32,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:41:32,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:41:32,973 INFO L87 Difference]: Start difference. First operand 689 states and 2153 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) 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) [2021-10-08 16:41:34,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:41:34,143 INFO L93 Difference]: Finished difference Result 711 states and 2186 transitions. [2021-10-08 16:41:34,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 16:41:34,144 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) 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 [2021-10-08 16:41:34,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:41:34,146 INFO L225 Difference]: With dead ends: 711 [2021-10-08 16:41:34,146 INFO L226 Difference]: Without dead ends: 689 [2021-10-08 16:41:34,147 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1654.5ms TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:41:34,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2021-10-08 16:41:34,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 689. [2021-10-08 16:41:34,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 678 states have (on average 3.1710914454277286) internal successors, (2150), 688 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:41:34,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 2150 transitions. [2021-10-08 16:41:34,158 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 2150 transitions. Word has length 16 [2021-10-08 16:41:34,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:41:34,158 INFO L470 AbstractCegarLoop]: Abstraction has 689 states and 2150 transitions. [2021-10-08 16:41:34,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) 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) [2021-10-08 16:41:34,158 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 2150 transitions. [2021-10-08 16:41:34,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:41:34,159 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:41:34,159 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:41:34,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-08 16:41:34,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:41:34,360 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:41:34,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:41:34,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1409028037, now seen corresponding path program 1 times [2021-10-08 16:41:34,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:41:34,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75929806] [2021-10-08 16:41:34,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:41:34,362 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:41:34,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:41:34,363 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:41:34,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-08 16:41:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:41:34,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 16:41:34,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:41:36,234 INFO L354 Elim1Store]: treesize reduction 195, result has 47.7 percent of original size [2021-10-08 16:41:36,235 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 362 treesize of output 319 [2021-10-08 16:41:36,253 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-08 16:41:36,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 319 treesize of output 315 [2021-10-08 16:41:36,292 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-08 16:41:36,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 302 treesize of output 306 [2021-10-08 16:41:50,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:50,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:41:52,856 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-10-08 16:41:52,857 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 408 treesize of output 468 [2021-10-08 16:41:52,982 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-08 16:41:52,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 468 treesize of output 472 [2021-10-08 16:41:53,074 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-08 16:41:53,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 472 treesize of output 476 [2021-10-08 16:41:55,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:41:55,788 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:41:55,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75929806] [2021-10-08 16:41:55,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75929806] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:41:55,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:41:55,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-08 16:41:55,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915784745] [2021-10-08 16:41:55,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 16:41:55,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:41:55,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 16:41:55,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:41:55,792 INFO L87 Difference]: Start difference. First operand 689 states and 2150 transitions. Second operand has 18 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 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) [2021-10-08 16:42:04,752 WARN L207 SmtUtils]: Spent 5.69 s on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2021-10-08 16:42:28,662 WARN L207 SmtUtils]: Spent 5.30 s on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2021-10-08 16:42:41,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:42:41,789 INFO L93 Difference]: Finished difference Result 1168 states and 3505 transitions. [2021-10-08 16:42:41,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 16:42:41,789 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 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 [2021-10-08 16:42:41,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:42:41,792 INFO L225 Difference]: With dead ends: 1168 [2021-10-08 16:42:41,792 INFO L226 Difference]: Without dead ends: 1116 [2021-10-08 16:42:41,792 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 29180.9ms TimeCoverageRelationStatistics Valid=430, Invalid=902, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 16:42:41,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-10-08 16:42:41,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 700. [2021-10-08 16:42:41,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 689 states have (on average 3.1552975326560233) internal successors, (2174), 699 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:42:41,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 2174 transitions. [2021-10-08 16:42:41,807 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 2174 transitions. Word has length 16 [2021-10-08 16:42:41,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:42:41,807 INFO L470 AbstractCegarLoop]: Abstraction has 700 states and 2174 transitions. [2021-10-08 16:42:41,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 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) [2021-10-08 16:42:41,807 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 2174 transitions. [2021-10-08 16:42:41,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 16:42:41,808 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:42:41,808 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:42:41,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-08 16:42:42,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:42:42,012 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:42:42,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:42:42,013 INFO L82 PathProgramCache]: Analyzing trace with hash 110506241, now seen corresponding path program 1 times [2021-10-08 16:42:42,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:42:42,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113544009] [2021-10-08 16:42:42,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:42:42,015 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:42:42,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:42:42,016 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:42:42,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-08 16:42:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:42:42,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 16:42:42,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:42:42,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:42:42,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:42:43,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:42:43,433 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:42:43,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113544009] [2021-10-08 16:42:43,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113544009] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:42:43,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:42:43,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:42:43,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217714724] [2021-10-08 16:42:43,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:42:43,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:42:43,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:42:43,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:42:43,435 INFO L87 Difference]: Start difference. First operand 700 states and 2174 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 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) [2021-10-08 16:42:45,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:42:45,144 INFO L93 Difference]: Finished difference Result 964 states and 2745 transitions. [2021-10-08 16:42:45,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 16:42:45,145 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 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 17 [2021-10-08 16:42:45,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:42:45,148 INFO L225 Difference]: With dead ends: 964 [2021-10-08 16:42:45,148 INFO L226 Difference]: Without dead ends: 964 [2021-10-08 16:42:45,149 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 914.8ms TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:42:45,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2021-10-08 16:42:45,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 701. [2021-10-08 16:42:45,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 690 states have (on average 3.1608695652173915) internal successors, (2181), 700 states have internal predecessors, (2181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:42:45,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 2181 transitions. [2021-10-08 16:42:45,179 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 2181 transitions. Word has length 17 [2021-10-08 16:42:45,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:42:45,180 INFO L470 AbstractCegarLoop]: Abstraction has 701 states and 2181 transitions. [2021-10-08 16:42:45,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 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) [2021-10-08 16:42:45,180 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 2181 transitions. [2021-10-08 16:42:45,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 16:42:45,181 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:42:45,182 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:42:45,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-08 16:42:45,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:42:45,398 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:42:45,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:42:45,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1998230341, now seen corresponding path program 2 times [2021-10-08 16:42:45,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:42:45,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2094293167] [2021-10-08 16:42:45,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:42:45,400 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:42:45,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:42:45,402 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:42:45,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-08 16:42:45,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:42:45,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:42:45,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 16:42:45,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:42:46,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:42:46,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:42:48,538 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-10-08 16:42:48,539 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 412 treesize of output 472 [2021-10-08 16:42:48,596 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-08 16:42:48,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 472 treesize of output 476 [2021-10-08 16:42:48,664 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-08 16:42:48,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 476 treesize of output 480 [2021-10-08 16:42:52,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:42:52,087 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:42:52,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2094293167] [2021-10-08 16:42:52,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2094293167] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:42:52,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:42:52,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-08 16:42:52,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388124739] [2021-10-08 16:42:52,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:42:52,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:42:52,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:42:52,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:42:52,089 INFO L87 Difference]: Start difference. First operand 701 states and 2181 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 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) [2021-10-08 16:42:53,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:42:53,054 INFO L93 Difference]: Finished difference Result 715 states and 2200 transitions. [2021-10-08 16:42:53,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 16:42:53,055 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 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 17 [2021-10-08 16:42:53,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:42:53,057 INFO L225 Difference]: With dead ends: 715 [2021-10-08 16:42:53,057 INFO L226 Difference]: Without dead ends: 695 [2021-10-08 16:42:53,058 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1169.2ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:42:53,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2021-10-08 16:42:53,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 694. [2021-10-08 16:42:53,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 683 states have (on average 3.1551976573938507) internal successors, (2155), 693 states have internal predecessors, (2155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:42:53,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 2155 transitions. [2021-10-08 16:42:53,070 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 2155 transitions. Word has length 17 [2021-10-08 16:42:53,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:42:53,070 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 2155 transitions. [2021-10-08 16:42:53,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 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) [2021-10-08 16:42:53,070 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 2155 transitions. [2021-10-08 16:42:53,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 16:42:53,072 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:42:53,072 INFO L512 BasicCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:42:53,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-08 16:42:53,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:42:53,274 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:42:53,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:42:53,275 INFO L82 PathProgramCache]: Analyzing trace with hash -773053911, now seen corresponding path program 3 times [2021-10-08 16:42:53,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:42:53,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [941844345] [2021-10-08 16:42:53,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:42:53,277 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:42:53,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:42:53,278 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:42:53,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-08 16:42:53,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 16:42:53,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:42:53,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-08 16:42:53,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:42:53,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:42:53,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:42:54,148 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-08 16:42:54,148 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 33 treesize of output 71 [2021-10-08 16:42:54,212 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-08 16:42:54,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 80 [2021-10-08 16:42:54,484 INFO L354 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2021-10-08 16:42:54,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 32 [2021-10-08 16:42:54,591 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-08 16:42:54,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-10-08 16:42:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-08 16:42:56,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:43:09,181 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-08 16:43:09,181 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:43:09,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [941844345] [2021-10-08 16:43:09,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [941844345] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:43:09,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:43:09,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-08 16:43:09,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539534128] [2021-10-08 16:43:09,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 16:43:09,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:43:09,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 16:43:09,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=247, Unknown=1, NotChecked=0, Total=306 [2021-10-08 16:43:09,183 INFO L87 Difference]: Start difference. First operand 694 states and 2155 transitions. Second operand has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:43:44,306 WARN L207 SmtUtils]: Spent 7.48 s on a formula simplification. DAG size of input: 107 DAG size of output: 94 [2021-10-08 16:44:04,942 WARN L207 SmtUtils]: Spent 14.50 s on a formula simplification. DAG size of input: 97 DAG size of output: 91 [2021-10-08 16:44:29,972 WARN L207 SmtUtils]: Spent 7.50 s on a formula simplification. DAG size of input: 111 DAG size of output: 99 [2021-10-08 16:44:55,588 WARN L207 SmtUtils]: Spent 17.89 s on a formula simplification. DAG size of input: 114 DAG size of output: 101 [2021-10-08 16:45:05,157 WARN L207 SmtUtils]: Spent 5.34 s on a formula simplification. DAG size of input: 102 DAG size of output: 92 [2021-10-08 16:45:34,618 WARN L207 SmtUtils]: Spent 9.17 s on a formula simplification. DAG size of input: 104 DAG size of output: 103 [2021-10-08 16:45:43,331 WARN L207 SmtUtils]: Spent 6.06 s on a formula simplification that was a NOOP. DAG size: 86 [2021-10-08 16:45:52,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:45:52,053 INFO L93 Difference]: Finished difference Result 2503 states and 7933 transitions. [2021-10-08 16:45:52,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 16:45:52,057 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 16:45:52,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:45:52,064 INFO L225 Difference]: With dead ends: 2503 [2021-10-08 16:45:52,065 INFO L226 Difference]: Without dead ends: 2503 [2021-10-08 16:45:52,066 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 132866.3ms TimeCoverageRelationStatistics Valid=410, Invalid=1746, Unknown=6, NotChecked=0, Total=2162 [2021-10-08 16:45:52,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2021-10-08 16:45:52,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 1370. [2021-10-08 16:45:52,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1359 states have (on average 3.5312729948491537) internal successors, (4799), 1369 states have internal predecessors, (4799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:45:52,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 4799 transitions. [2021-10-08 16:45:52,113 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 4799 transitions. Word has length 18 [2021-10-08 16:45:52,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:45:52,113 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 4799 transitions. [2021-10-08 16:45:52,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:45:52,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 4799 transitions. [2021-10-08 16:45:52,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 16:45:52,116 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:45:52,116 INFO L512 BasicCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:45:52,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-08 16:45:52,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:45:52,329 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:45:52,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:45:52,330 INFO L82 PathProgramCache]: Analyzing trace with hash -773054047, now seen corresponding path program 4 times [2021-10-08 16:45:52,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:45:52,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446487680] [2021-10-08 16:45:52,331 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:45:52,331 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:45:52,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:45:52,333 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:45:52,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-08 16:45:52,909 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:45:52,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:45:52,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 16:45:52,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:45:52,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:45:52,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:45:53,265 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-08 16:45:53,265 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 [2021-10-08 16:45:53,434 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 13 treesize of output 9 [2021-10-08 16:45:53,915 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 16:45:53,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:45:54,537 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 16:45:54,538 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:45:54,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446487680] [2021-10-08 16:45:54,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446487680] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:45:54,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:45:54,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-08 16:45:54,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311773398] [2021-10-08 16:45:54,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 16:45:54,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:45:54,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 16:45:54,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:45:54,539 INFO L87 Difference]: Start difference. First operand 1370 states and 4799 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:45:57,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:45:57,581 INFO L93 Difference]: Finished difference Result 1654 states and 4945 transitions. [2021-10-08 16:45:57,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 16:45:57,582 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 16:45:57,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:45:57,587 INFO L225 Difference]: With dead ends: 1654 [2021-10-08 16:45:57,587 INFO L226 Difference]: Without dead ends: 1654 [2021-10-08 16:45:57,587 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 867.4ms TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:45:57,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2021-10-08 16:45:57,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 1067. [2021-10-08 16:45:57,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1056 states have (on average 3.240530303030303) internal successors, (3422), 1066 states have internal predecessors, (3422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:45:57,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 3422 transitions. [2021-10-08 16:45:57,609 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 3422 transitions. Word has length 18 [2021-10-08 16:45:57,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:45:57,610 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 3422 transitions. [2021-10-08 16:45:57,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:45:57,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 3422 transitions. [2021-10-08 16:45:57,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:45:57,611 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:45:57,612 INFO L512 BasicCegarLoop]: trace histogram [6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:45:57,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-08 16:45:57,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:45:57,827 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:45:57,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:45:57,828 INFO L82 PathProgramCache]: Analyzing trace with hash -688956979, now seen corresponding path program 4 times [2021-10-08 16:45:57,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:45:57,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429186335] [2021-10-08 16:45:57,829 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:45:57,829 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:45:57,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:45:57,830 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:45:57,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-08 16:45:58,382 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:45:58,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:45:58,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 16:45:58,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:45:58,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-08 16:45:59,132 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-08 16:45:59,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:46:02,566 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:46:02,566 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:46:02,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429186335] [2021-10-08 16:46:02,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429186335] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:46:02,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:46:02,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 21 [2021-10-08 16:46:02,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306205402] [2021-10-08 16:46:02,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 16:46:02,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:46:02,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 16:46:02,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:46:02,569 INFO L87 Difference]: Start difference. First operand 1067 states and 3422 transitions. Second operand has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:46:26,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:46:26,173 INFO L93 Difference]: Finished difference Result 3011 states and 9001 transitions. [2021-10-08 16:46:26,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 16:46:26,176 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:46:26,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:46:26,183 INFO L225 Difference]: With dead ends: 3011 [2021-10-08 16:46:26,183 INFO L226 Difference]: Without dead ends: 3011 [2021-10-08 16:46:26,184 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 9686.2ms TimeCoverageRelationStatistics Valid=268, Invalid=1138, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 16:46:26,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2021-10-08 16:46:26,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 1444. [2021-10-08 16:46:26,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1433 states have (on average 3.3977669225401255) internal successors, (4869), 1443 states have internal predecessors, (4869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:46:26,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 4869 transitions. [2021-10-08 16:46:26,220 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 4869 transitions. Word has length 19 [2021-10-08 16:46:26,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:46:26,220 INFO L470 AbstractCegarLoop]: Abstraction has 1444 states and 4869 transitions. [2021-10-08 16:46:26,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:46:26,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 4869 transitions. [2021-10-08 16:46:26,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:46:26,223 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:46:26,223 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:46:26,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-08 16:46:26,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:46:26,439 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:46:26,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:46:26,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1068306145, now seen corresponding path program 2 times [2021-10-08 16:46:26,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:46:26,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744331808] [2021-10-08 16:46:26,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:46:26,441 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:46:26,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:46:26,442 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:46:26,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-08 16:46:26,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:46:26,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:46:26,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 16:46:26,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:46:29,207 INFO L354 Elim1Store]: treesize reduction 195, result has 47.7 percent of original size [2021-10-08 16:46:29,207 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 362 treesize of output 319 [2021-10-08 16:46:29,235 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-08 16:46:29,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 319 treesize of output 315 [2021-10-08 16:46:29,311 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-08 16:46:29,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 302 treesize of output 306 [2021-10-08 16:46:42,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:46:42,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:46:45,092 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-10-08 16:46:45,092 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 419 treesize of output 479 [2021-10-08 16:46:45,161 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-08 16:46:45,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 479 treesize of output 483 [2021-10-08 16:46:45,270 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-08 16:46:45,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 483 treesize of output 487 [2021-10-08 16:46:53,052 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:46:53,052 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:46:53,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744331808] [2021-10-08 16:46:53,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [744331808] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:46:53,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:46:53,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-10-08 16:46:53,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834120623] [2021-10-08 16:46:53,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:46:53,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:46:53,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:46:53,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=126, Unknown=1, NotChecked=0, Total=182 [2021-10-08 16:46:53,055 INFO L87 Difference]: Start difference. First operand 1444 states and 4869 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:47:08,531 WARN L207 SmtUtils]: Spent 8.89 s on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2021-10-08 16:47:46,967 WARN L207 SmtUtils]: Spent 33.35 s on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-10-08 16:48:21,810 WARN L207 SmtUtils]: Spent 32.07 s on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2021-10-08 16:48:35,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:48:35,599 INFO L93 Difference]: Finished difference Result 2838 states and 9717 transitions. [2021-10-08 16:48:35,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 16:48:35,602 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:48:35,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:48:35,608 INFO L225 Difference]: With dead ends: 2838 [2021-10-08 16:48:35,608 INFO L226 Difference]: Without dead ends: 2828 [2021-10-08 16:48:35,609 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 90849.6ms TimeCoverageRelationStatistics Valid=236, Invalid=411, Unknown=3, NotChecked=0, Total=650 [2021-10-08 16:48:35,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2828 states. [2021-10-08 16:48:35,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2828 to 1486. [2021-10-08 16:48:35,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1475 states have (on average 3.4291525423728815) internal successors, (5058), 1485 states have internal predecessors, (5058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:48:35,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5058 transitions. [2021-10-08 16:48:35,648 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5058 transitions. Word has length 19 [2021-10-08 16:48:35,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:48:35,648 INFO L470 AbstractCegarLoop]: Abstraction has 1486 states and 5058 transitions. [2021-10-08 16:48:35,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:48:35,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5058 transitions. [2021-10-08 16:48:35,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:48:35,651 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:48:35,651 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:48:35,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-08 16:48:35,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:48:35,866 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:48:35,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:48:35,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1844658431, now seen corresponding path program 3 times [2021-10-08 16:48:35,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:48:35,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1218486764] [2021-10-08 16:48:35,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:48:35,880 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:48:35,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:48:35,881 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:48:35,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-08 16:48:36,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-08 16:48:36,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:48:36,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 16:48:36,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:48:38,765 INFO L354 Elim1Store]: treesize reduction 156, result has 58.2 percent of original size [2021-10-08 16:48:38,766 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 287 treesize of output 415 [2021-10-08 16:48:38,822 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-08 16:48:38,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 415 treesize of output 419 [2021-10-08 16:48:38,875 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-08 16:48:38,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 419 treesize of output 423 [2021-10-08 16:48:40,504 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:48:40,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:48:43,345 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-10-08 16:48:43,346 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 419 treesize of output 479 [2021-10-08 16:48:43,412 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-08 16:48:43,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 479 treesize of output 483 [2021-10-08 16:48:43,477 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-08 16:48:43,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 483 treesize of output 487 [2021-10-08 16:48:51,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:48:51,722 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:48:51,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1218486764] [2021-10-08 16:48:51,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1218486764] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:48:51,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:48:51,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-10-08 16:48:51,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602776184] [2021-10-08 16:48:51,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:48:51,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:48:51,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:48:51,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:48:51,726 INFO L87 Difference]: Start difference. First operand 1486 states and 5058 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:49:02,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:49:02,971 INFO L93 Difference]: Finished difference Result 2820 states and 9596 transitions. [2021-10-08 16:49:02,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 16:49:02,974 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:49:02,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:49:02,983 INFO L225 Difference]: With dead ends: 2820 [2021-10-08 16:49:02,984 INFO L226 Difference]: Without dead ends: 2738 [2021-10-08 16:49:02,984 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 8922.4ms TimeCoverageRelationStatistics Valid=182, Invalid=324, Unknown=0, NotChecked=0, Total=506 [2021-10-08 16:49:02,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2738 states. [2021-10-08 16:49:03,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2738 to 1482. [2021-10-08 16:49:03,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1471 states have (on average 3.4004078857919784) internal successors, (5002), 1481 states have internal predecessors, (5002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:49:03,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5002 transitions. [2021-10-08 16:49:03,024 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5002 transitions. Word has length 19 [2021-10-08 16:49:03,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:49:03,025 INFO L470 AbstractCegarLoop]: Abstraction has 1482 states and 5002 transitions. [2021-10-08 16:49:03,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:49:03,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5002 transitions. [2021-10-08 16:49:03,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:49:03,027 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:49:03,027 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:49:03,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-08 16:49:03,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:49:03,243 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:49:03,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:49:03,244 INFO L82 PathProgramCache]: Analyzing trace with hash 2106452027, now seen corresponding path program 4 times [2021-10-08 16:49:03,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:49:03,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024767651] [2021-10-08 16:49:03,245 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:49:03,245 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:49:03,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:49:03,247 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:49:03,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-08 16:49:03,900 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:49:03,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:49:03,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-08 16:49:03,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:49:03,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:49:03,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:49:04,271 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-08 16:49:04,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-10-08 16:49:04,582 INFO L354 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2021-10-08 16:49:04,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2021-10-08 16:49:04,863 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 15 treesize of output 11 [2021-10-08 16:49:05,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:49:05,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:49:06,653 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:49:06,653 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:49:06,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024767651] [2021-10-08 16:49:06,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024767651] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:49:06,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:49:06,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 16:49:06,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111227934] [2021-10-08 16:49:06,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 16:49:06,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:49:06,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 16:49:06,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:49:06,655 INFO L87 Difference]: Start difference. First operand 1482 states and 5002 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:49:13,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:49:13,701 INFO L93 Difference]: Finished difference Result 2178 states and 6720 transitions. [2021-10-08 16:49:13,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 16:49:13,702 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:49:13,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:49:13,708 INFO L225 Difference]: With dead ends: 2178 [2021-10-08 16:49:13,708 INFO L226 Difference]: Without dead ends: 2178 [2021-10-08 16:49:13,709 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 3152.2ms TimeCoverageRelationStatistics Valid=239, Invalid=573, Unknown=0, NotChecked=0, Total=812 [2021-10-08 16:49:13,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2178 states. [2021-10-08 16:49:13,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2178 to 1483. [2021-10-08 16:49:13,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1483 states, 1472 states have (on average 3.385869565217391) internal successors, (4984), 1482 states have internal predecessors, (4984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:49:13,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 4984 transitions. [2021-10-08 16:49:13,738 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 4984 transitions. Word has length 19 [2021-10-08 16:49:13,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:49:13,739 INFO L470 AbstractCegarLoop]: Abstraction has 1483 states and 4984 transitions. [2021-10-08 16:49:13,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:49:13,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 4984 transitions. [2021-10-08 16:49:13,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:49:13,751 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:49:13,751 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:49:13,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2021-10-08 16:49:13,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:49:13,967 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-08 16:49:13,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:49:13,968 INFO L82 PathProgramCache]: Analyzing trace with hash -49686371, now seen corresponding path program 1 times [2021-10-08 16:49:13,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:49:13,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371759336] [2021-10-08 16:49:13,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:49:13,969 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:49:13,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:49:13,970 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:49:13,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-08 16:49:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:49:14,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-08 16:49:14,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:49:14,795 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 15 treesize of output 13 [2021-10-08 16:49:15,611 INFO L354 Elim1Store]: treesize reduction 163, result has 15.1 percent of original size [2021-10-08 16:49:15,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 43 [2021-10-08 16:49:25,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:49:25,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:49:25,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:49:25,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:49:25,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:49:25,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-08 16:49:25,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-08 16:49:25,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:49:25,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:49:25,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:49:25,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:49:25,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:49:25,465 INFO L173 IndexEqualityManager]: detected equality via solver Received shutdown request... [2021-10-08 16:49:29,174 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 [2021-10-08 16:49:29,199 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 16:49:29,338 WARN L223 SmtUtils]: Removed 108 from assertion stack [2021-10-08 16:49:29,341 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 16:49:29,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-08 16:49:29,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:49:29,542 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. [2021-10-08 16:49:29,545 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-08 16:49:29,545 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-08 16:49:29,545 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-08 16:49:29,550 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-08 16:49:29,550 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4REQUIRES_VIOLATION [2021-10-08 16:49:29,550 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5REQUIRES_VIOLATION [2021-10-08 16:49:29,550 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6REQUIRES_VIOLATION [2021-10-08 16:49:29,551 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7REQUIRES_VIOLATION [2021-10-08 16:49:29,551 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-08 16:49:29,551 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-08 16:49:29,551 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-08 16:49:29,551 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-08 16:49:29,551 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4REQUIRES_VIOLATION [2021-10-08 16:49:29,551 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5REQUIRES_VIOLATION [2021-10-08 16:49:29,551 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6REQUIRES_VIOLATION [2021-10-08 16:49:29,552 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7REQUIRES_VIOLATION [2021-10-08 16:49:29,552 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-08 16:49:29,552 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-08 16:49:29,552 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-08 16:49:29,552 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-08 16:49:29,552 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-08 16:49:29,552 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-08 16:49:29,552 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-08 16:49:29,552 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-08 16:49:29,553 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-08 16:49:29,553 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-08 16:49:29,553 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-08 16:49:29,553 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-08 16:49:29,553 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 16:49:29,553 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 16:49:29,553 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 16:49:29,553 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-08 16:49:29,554 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-08 16:49:29,554 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-08 16:49:29,554 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-08 16:49:29,554 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4REQUIRES_VIOLATION [2021-10-08 16:49:29,554 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5REQUIRES_VIOLATION [2021-10-08 16:49:29,554 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6REQUIRES_VIOLATION [2021-10-08 16:49:29,554 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7REQUIRES_VIOLATION [2021-10-08 16:49:29,554 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-08 16:49:29,554 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-08 16:49:29,555 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-08 16:49:29,555 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-08 16:49:29,555 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4REQUIRES_VIOLATION [2021-10-08 16:49:29,555 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5REQUIRES_VIOLATION [2021-10-08 16:49:29,555 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6REQUIRES_VIOLATION [2021-10-08 16:49:29,555 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7REQUIRES_VIOLATION [2021-10-08 16:49:29,561 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 16:49:29,561 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 16:49:29,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 04:49:29 BasicIcfg [2021-10-08 16:49:29,564 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 16:49:29,564 INFO L168 Benchmark]: Toolchain (without parser) took 848476.76 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 126.3 MB in the beginning and 120.5 MB in the end (delta: 5.9 MB). Peak memory consumption was 116.8 MB. Max. memory is 8.0 GB. [2021-10-08 16:49:29,565 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 16:49:29,565 INFO L168 Benchmark]: CACSL2BoogieTranslator took 433.90 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 112.5 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-08 16:49:29,565 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.27 ms. Allocated memory is still 151.0 MB. Free memory was 112.5 MB in the beginning and 110.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:49:29,566 INFO L168 Benchmark]: Boogie Preprocessor took 45.35 ms. Allocated memory is still 151.0 MB. Free memory was 110.3 MB in the beginning and 108.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 16:49:29,566 INFO L168 Benchmark]: RCFGBuilder took 1108.33 ms. Allocated memory is still 151.0 MB. Free memory was 108.3 MB in the beginning and 118.2 MB in the end (delta: -9.9 MB). Peak memory consumption was 11.0 MB. Max. memory is 8.0 GB. [2021-10-08 16:49:29,566 INFO L168 Benchmark]: TraceAbstraction took 846807.35 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 117.7 MB in the beginning and 120.5 MB in the end (delta: -2.8 MB). Peak memory consumption was 107.8 MB. Max. memory is 8.0 GB. [2021-10-08 16:49:29,568 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 433.90 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 112.5 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 63.27 ms. Allocated memory is still 151.0 MB. Free memory was 112.5 MB in the beginning and 110.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.35 ms. Allocated memory is still 151.0 MB. Free memory was 110.3 MB in the beginning and 108.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1108.33 ms. Allocated memory is still 151.0 MB. Free memory was 108.3 MB in the beginning and 118.2 MB in the end (delta: -9.9 MB). Peak memory consumption was 11.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 846807.35 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 117.7 MB in the beginning and 120.5 MB in the end (delta: -2.8 MB). Peak memory consumption was 107.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 39783.9ms, 236 PlacesBefore, 57 PlacesAfterwards, 250 TransitionsBefore, 55 TransitionsAfterwards, 7548 CoEnabledTransitionPairs, 7 FixpointIterations, 120 TrivialSequentialCompositions, 115 ConcurrentSequentialCompositions, 26 TrivialYvCompositions, 25 ConcurrentYvCompositions, 16 ChoiceCompositions, 302 TotalNumberOfCompositions, 10599 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9325, positive: 9212, positive conditional: 0, positive unconditional: 9212, negative: 113, negative conditional: 0, negative unconditional: 113, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5349, positive: 5325, positive conditional: 0, positive unconditional: 5325, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5349, positive: 5325, positive conditional: 0, positive unconditional: 5325, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 24, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1411, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1411, negative conditional: 0, negative unconditional: 1411, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 9325, positive: 3887, positive conditional: 0, positive unconditional: 3887, negative: 89, negative conditional: 0, negative unconditional: 89, unknown: 5349, unknown conditional: 0, unknown unconditional: 5349] , Statistics on independence cache: Total cache size (in pairs): 258, Positive cache size: 247, Positive conditional cache size: 0, Positive unconditional cache size: 247, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - 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: 92]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 84]: 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 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - TimeoutResultAtElement [Line: 85]: 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 20 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 527 for 3867ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 326 locations, 48 error locations. Started 1 CEGAR loops. OverallTime: 846532.3ms, OverallIterations: 45, TraceHistogramMax: 14, EmptinessCheckTime: 76.1ms, AutomataDifference: 601773.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 39889.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1399 SDtfs, 16171 SDslu, 7673 SDs, 0 SdLazy, 18429 SolverSat, 1525 SolverUnsat, 46 SolverUnknown, 0 SolverNotchecked, 229868.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1200 GetRequests, 465 SyntacticMatches, 4 SemanticMatches, 731 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2893 ImplicationChecksByTransitivity, 423887.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1486occurred in iteration=42, InterpolantAutomatonStates: 561, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1020.9ms AutomataMinimizationTime, 44 MinimizatonAttempts, 33423 StatesRemovedByMinimization, 36 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 417.1ms SsaConstructionTime, 3744.1ms SatisfiabilityAnalysisTime, 166904.4ms InterpolantComputationTime, 496 NumberOfCodeBlocks, 475 NumberOfCodeBlocksAsserted, 58 NumberOfCheckSat, 904 ConstructedInterpolants, 185 QuantifiedInterpolants, 19152 SizeOfPredicates, 647 NumberOfNonLiveVariables, 4180 ConjunctsInSsa, 657 ConjunctsInUnsatCore, 88 InterpolantComputations, 44 PerfectInterpolantSequences, 241/722 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