/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/popl20-more-parray-copy.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 16:25:11,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 16:25:11,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 16:25:11,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 16:25:11,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-07 16:25:11,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-07 16:25:11,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-07 16:25:11,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-07 16:25:11,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-07 16:25:11,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-07 16:25:11,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-07 16:25:11,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-07 16:25:11,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-07 16:25:11,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-07 16:25:11,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-07 16:25:11,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-07 16:25:11,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-07 16:25:11,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-07 16:25:11,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-07 16:25:11,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-07 16:25:11,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-07 16:25:11,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-07 16:25:11,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-07 16:25:11,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-07 16:25:11,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-07 16:25:11,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 16:25:11,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 16:25:11,884 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 16:25:11,885 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 16:25:11,944 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 16:25:11,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 16:25:11,945 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 16:25:11,945 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 16:25:11,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 16:25:11,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 16:25:11,950 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 16:25:11,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 16:25:11,951 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 16:25:11,951 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 16:25:11,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 16:25:11,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 16:25:11,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 16:25:11,953 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 16:25:11,953 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 16:25:11,953 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 16:25:11,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 16:25:11,954 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 16:25:11,954 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 16:25:11,954 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 16:25:11,954 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 16:25:11,955 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 16:25:11,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 16:25:11,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 16:25:11,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 16:25:11,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:25:11,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 16:25:11,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 16:25:11,956 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 16:25:11,956 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 16:25:11,957 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 16:25:11,957 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 16:25:11,957 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 16:25:12,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 16:25:12,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 16:25:12,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 16:25:12,432 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 16:25:12,433 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 16:25:12,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c [2021-10-07 16:25:12,511 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/40bf02588/e721498aefff462c800c166644c61356/FLAGfbd614481 [2021-10-07 16:25:13,158 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 16:25:13,159 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c [2021-10-07 16:25:13,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/40bf02588/e721498aefff462c800c166644c61356/FLAGfbd614481 [2021-10-07 16:25:13,523 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/40bf02588/e721498aefff462c800c166644c61356 [2021-10-07 16:25:13,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 16:25:13,539 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 16:25:13,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 16:25:13,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 16:25:13,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 16:25:13,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:25:13" (1/1) ... [2021-10-07 16:25:13,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@327ea423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:25:13, skipping insertion in model container [2021-10-07 16:25:13,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:25:13" (1/1) ... [2021-10-07 16:25:13,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 16:25:13,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 16:25:13,883 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/popl20-more-parray-copy.wvr.c[2373,2386] [2021-10-07 16:25:13,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:25:13,918 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-07 16:25:13,926 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 16:25:13,968 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/popl20-more-parray-copy.wvr.c[2373,2386] [2021-10-07 16:25:13,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:25:13,979 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 16:25:14,007 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/popl20-more-parray-copy.wvr.c[2373,2386] [2021-10-07 16:25:14,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:25:14,032 INFO L208 MainTranslator]: Completed translation [2021-10-07 16:25:14,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:25:14 WrapperNode [2021-10-07 16:25:14,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 16:25:14,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 16:25:14,035 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 16:25:14,035 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 16:25:14,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:25:14" (1/1) ... [2021-10-07 16:25:14,060 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:25:14" (1/1) ... [2021-10-07 16:25:14,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 16:25:14,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 16:25:14,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 16:25:14,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 16:25:14,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:25:14" (1/1) ... [2021-10-07 16:25:14,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:25:14" (1/1) ... [2021-10-07 16:25:14,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:25:14" (1/1) ... [2021-10-07 16:25:14,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:25:14" (1/1) ... [2021-10-07 16:25:14,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:25:14" (1/1) ... [2021-10-07 16:25:14,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:25:14" (1/1) ... [2021-10-07 16:25:14,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:25:14" (1/1) ... [2021-10-07 16:25:14,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 16:25:14,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 16:25:14,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 16:25:14,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 16:25:14,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:25:14" (1/1) ... [2021-10-07 16:25:14,160 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:25:14,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 16:25:14,201 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-07 16:25:14,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-07 16:25:14,273 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 16:25:14,273 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 16:25:14,273 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 16:25:14,274 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 16:25:14,274 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-07 16:25:14,274 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-07 16:25:14,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 16:25:14,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 16:25:14,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-07 16:25:14,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 16:25:14,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 16:25:14,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 16:25:14,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 16:25:14,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 16:25:14,278 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 16:25:15,223 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 16:25:15,224 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-10-07 16:25:15,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:25:15 BoogieIcfgContainer [2021-10-07 16:25:15,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 16:25:15,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 16:25:15,229 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 16:25:15,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 16:25:15,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 04:25:13" (1/3) ... [2021-10-07 16:25:15,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d20948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:25:15, skipping insertion in model container [2021-10-07 16:25:15,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:25:14" (2/3) ... [2021-10-07 16:25:15,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d20948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:25:15, skipping insertion in model container [2021-10-07 16:25:15,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:25:15" (3/3) ... [2021-10-07 16:25:15,237 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-parray-copy.wvr.c [2021-10-07 16:25:15,248 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 16:25:15,248 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2021-10-07 16:25:15,248 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 16:25:15,323 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,324 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,324 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,324 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,325 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,325 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,325 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,325 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,325 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,326 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,326 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,326 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,326 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,327 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,327 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,327 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,327 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,328 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,328 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,328 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,329 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,329 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,329 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,329 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,330 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,330 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,330 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,330 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,330 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,330 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,331 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,331 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,331 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,331 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,332 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,332 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,332 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,332 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,333 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,333 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,333 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,333 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,334 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,334 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,334 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,334 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,335 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,335 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,335 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,336 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,336 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,336 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,337 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,337 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,337 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,337 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,338 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,338 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,338 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,338 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,339 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,339 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,339 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,339 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,339 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,340 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,340 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,340 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,341 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,341 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,341 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,341 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,341 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,342 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,342 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,342 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,342 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,342 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,343 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,343 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,343 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,343 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,344 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,344 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,344 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,344 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,345 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,345 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,345 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,346 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,346 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,346 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,346 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,346 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,347 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,347 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,347 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,347 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,348 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,348 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,348 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,348 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,352 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,352 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,352 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,352 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,353 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,358 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,358 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,358 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,358 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,359 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,361 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,361 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,361 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,361 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,362 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:25:15,369 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-07 16:25:15,421 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 16:25:15,430 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-07 16:25:15,430 INFO L340 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2021-10-07 16:25:15,450 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 16:25:15,463 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 214 places, 221 transitions, 466 flow [2021-10-07 16:25:15,467 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 214 places, 221 transitions, 466 flow [2021-10-07 16:25:15,469 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 214 places, 221 transitions, 466 flow [2021-10-07 16:25:15,572 INFO L129 PetriNetUnfolder]: 17/218 cut-off events. [2021-10-07 16:25:15,574 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-07 16:25:15,584 INFO L84 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 218 events. 17/218 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 278 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 152. Up to 2 conditions per place. [2021-10-07 16:25:15,595 INFO L116 LiptonReduction]: Number of co-enabled transitions 3264 [2021-10-07 16:25:50,944 INFO L131 LiptonReduction]: Checked pairs total: 5630 [2021-10-07 16:25:50,944 INFO L133 LiptonReduction]: Total number of compositions: 237 [2021-10-07 16:25:50,955 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 66 transitions, 156 flow [2021-10-07 16:25:51,079 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2641 states, 2135 states have (on average 4.385480093676815) internal successors, (9363), 2640 states have internal predecessors, (9363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:25:51,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 2641 states, 2135 states have (on average 4.385480093676815) internal successors, (9363), 2640 states have internal predecessors, (9363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:25:51,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 16:25:51,098 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:25:51,099 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 16:25:51,099 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 45 more)] === [2021-10-07 16:25:51,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:25:51,106 INFO L82 PathProgramCache]: Analyzing trace with hash 26620, now seen corresponding path program 1 times [2021-10-07 16:25:51,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:25:51,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597317189] [2021-10-07 16:25:51,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:25:51,121 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:25:51,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:25:51,125 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:25:51,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 16:25:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:25:51,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 16:25:51,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:25:51,542 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-07 16:25:51,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-07 16:25:52,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:25:52,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:25:52,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:25:52,451 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:25:52,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597317189] [2021-10-07 16:25:52,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597317189] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:25:52,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:25:52,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 16:25:52,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997335328] [2021-10-07 16:25:52,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:25:52,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:25:52,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:25:52,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:25:52,488 INFO L87 Difference]: Start difference. First operand has 2641 states, 2135 states have (on average 4.385480093676815) internal successors, (9363), 2640 states have internal predecessors, (9363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:25:52,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:25:52,842 INFO L93 Difference]: Finished difference Result 2638 states and 9360 transitions. [2021-10-07 16:25:52,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:25:52,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-07 16:25:52,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:25:52,898 INFO L225 Difference]: With dead ends: 2638 [2021-10-07 16:25:52,898 INFO L226 Difference]: Without dead ends: 2638 [2021-10-07 16:25:52,900 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:25:52,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2021-10-07 16:25:53,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 2638. [2021-10-07 16:25:53,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 2135 states have (on average 4.384074941451991) internal successors, (9360), 2637 states have internal predecessors, (9360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:25:53,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 9360 transitions. [2021-10-07 16:25:53,200 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 9360 transitions. Word has length 2 [2021-10-07 16:25:53,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:25:53,201 INFO L470 AbstractCegarLoop]: Abstraction has 2638 states and 9360 transitions. [2021-10-07 16:25:53,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:25:53,201 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 9360 transitions. [2021-10-07 16:25:53,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 16:25:53,202 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:25:53,202 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 16:25:53,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-07 16:25:53,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:25:53,405 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 45 more)] === [2021-10-07 16:25:53,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:25:53,407 INFO L82 PathProgramCache]: Analyzing trace with hash 26621, now seen corresponding path program 1 times [2021-10-07 16:25:53,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:25:53,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [735946140] [2021-10-07 16:25:53,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:25:53,409 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:25:53,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:25:53,410 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:25:53,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 16:25:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:25:53,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:25:53,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:25:53,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:25:53,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:25:53,881 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:25:53,881 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 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-07 16:25:53,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:25:53,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:25:54,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:25:54,076 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:25:54,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [735946140] [2021-10-07 16:25:54,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [735946140] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:25:54,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:25:54,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:25:54,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454370286] [2021-10-07 16:25:54,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:25:54,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:25:54,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:25:54,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:25:54,081 INFO L87 Difference]: Start difference. First operand 2638 states and 9360 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:25:55,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:25:55,275 INFO L93 Difference]: Finished difference Result 5275 states and 18723 transitions. [2021-10-07 16:25:55,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:25:55,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-07 16:25:55,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:25:55,340 INFO L225 Difference]: With dead ends: 5275 [2021-10-07 16:25:55,340 INFO L226 Difference]: Without dead ends: 5275 [2021-10-07 16:25:55,341 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 89.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:25:55,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5275 states. [2021-10-07 16:25:55,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5275 to 2642. [2021-10-07 16:25:55,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2642 states, 2139 states have (on average 4.381486676016831) internal successors, (9372), 2641 states have internal predecessors, (9372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:25:55,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 9372 transitions. [2021-10-07 16:25:55,572 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 9372 transitions. Word has length 2 [2021-10-07 16:25:55,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:25:55,572 INFO L470 AbstractCegarLoop]: Abstraction has 2642 states and 9372 transitions. [2021-10-07 16:25:55,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:25:55,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 9372 transitions. [2021-10-07 16:25:55,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 16:25:55,573 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:25:55,573 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 16:25:55,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-07 16:25:55,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:25:55,789 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 45 more)] === [2021-10-07 16:25:55,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:25:55,791 INFO L82 PathProgramCache]: Analyzing trace with hash 830010, now seen corresponding path program 1 times [2021-10-07 16:25:55,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:25:55,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056551654] [2021-10-07 16:25:55,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:25:55,792 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:25:55,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:25:55,793 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:25:55,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 16:25:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:25:55,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 16:25:55,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:25:55,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:25:55,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:25:55,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:25:55,963 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:25:55,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056551654] [2021-10-07 16:25:55,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056551654] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:25:55,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:25:55,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 16:25:55,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760254113] [2021-10-07 16:25:55,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:25:55,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:25:55,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:25:55,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:25:55,966 INFO L87 Difference]: Start difference. First operand 2642 states and 9372 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) [2021-10-07 16:25:56,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:25:56,422 INFO L93 Difference]: Finished difference Result 2643 states and 9369 transitions. [2021-10-07 16:25:56,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:25:56,424 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 [2021-10-07 16:25:56,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:25:56,455 INFO L225 Difference]: With dead ends: 2643 [2021-10-07 16:25:56,455 INFO L226 Difference]: Without dead ends: 2642 [2021-10-07 16:25:56,456 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.7ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-07 16:25:56,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2021-10-07 16:25:56,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2642. [2021-10-07 16:25:56,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2642 states, 2139 states have (on average 4.379616643291258) internal successors, (9368), 2641 states have internal predecessors, (9368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:25:56,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 9368 transitions. [2021-10-07 16:25:56,581 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 9368 transitions. Word has length 3 [2021-10-07 16:25:56,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:25:56,581 INFO L470 AbstractCegarLoop]: Abstraction has 2642 states and 9368 transitions. [2021-10-07 16:25:56,581 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) [2021-10-07 16:25:56,582 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 9368 transitions. [2021-10-07 16:25:56,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 16:25:56,582 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:25:56,582 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-07 16:25:56,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-07 16:25:56,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:25:56,796 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 45 more)] === [2021-10-07 16:25:56,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:25:56,797 INFO L82 PathProgramCache]: Analyzing trace with hash 25691645, now seen corresponding path program 1 times [2021-10-07 16:25:56,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:25:56,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076576971] [2021-10-07 16:25:56,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:25:56,798 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:25:56,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:25:56,799 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:25:56,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-07 16:25:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:25:56,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 16:25:56,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:25:56,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:25:56,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:25:57,231 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:25:57,232 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 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-07 16:25:57,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:25:57,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:25:57,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:25:57,939 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:25:57,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076576971] [2021-10-07 16:25:57,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076576971] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:25:57,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:25:57,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 16:25:57,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124971041] [2021-10-07 16:25:57,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:25:57,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:25:57,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:25:57,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:25:57,942 INFO L87 Difference]: Start difference. First operand 2642 states and 9368 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:03,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:26:03,919 INFO L93 Difference]: Finished difference Result 13182 states and 46796 transitions. [2021-10-07 16:26:03,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 16:26:03,921 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-07 16:26:03,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:26:04,054 INFO L225 Difference]: With dead ends: 13182 [2021-10-07 16:26:04,055 INFO L226 Difference]: Without dead ends: 13182 [2021-10-07 16:26:04,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 830.9ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:26:04,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13182 states. [2021-10-07 16:26:04,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13182 to 2650. [2021-10-07 16:26:04,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2650 states, 2147 states have (on average 4.374476013041453) internal successors, (9392), 2649 states have internal predecessors, (9392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:04,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 9392 transitions. [2021-10-07 16:26:04,430 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 9392 transitions. Word has length 4 [2021-10-07 16:26:04,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:26:04,430 INFO L470 AbstractCegarLoop]: Abstraction has 2650 states and 9392 transitions. [2021-10-07 16:26:04,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:04,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 9392 transitions. [2021-10-07 16:26:04,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 16:26:04,432 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:26:04,432 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 16:26:04,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-07 16:26:04,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:26:04,646 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 45 more)] === [2021-10-07 16:26:04,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:26:04,647 INFO L82 PathProgramCache]: Analyzing trace with hash 796483543, now seen corresponding path program 1 times [2021-10-07 16:26:04,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:26:04,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264902522] [2021-10-07 16:26:04,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:26:04,649 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:26:04,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:26:04,650 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:26:04,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-07 16:26:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:26:04,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:26:04,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:26:04,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:26:04,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:26:05,196 INFO L354 Elim1Store]: treesize reduction 245, result has 17.2 percent of original size [2021-10-07 16:26:05,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 73 treesize of output 107 [2021-10-07 16:26:05,217 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-07 16:26:05,218 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 188 treesize of output 182 [2021-10-07 16:26:10,095 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-10-07 16:26:10,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 67 treesize of output 78 [2021-10-07 16:26:10,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:26:10,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:26:11,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:26:11,094 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:26:11,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264902522] [2021-10-07 16:26:11,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264902522] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:26:11,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:26:11,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 16:26:11,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175148128] [2021-10-07 16:26:11,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:26:11,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:26:11,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:26:11,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:26:11,097 INFO L87 Difference]: Start difference. First operand 2650 states and 9392 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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) [2021-10-07 16:26:18,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:26:18,059 INFO L93 Difference]: Finished difference Result 10635 states and 36596 transitions. [2021-10-07 16:26:18,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 16:26:18,061 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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 [2021-10-07 16:26:18,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:26:18,145 INFO L225 Difference]: With dead ends: 10635 [2021-10-07 16:26:18,146 INFO L226 Difference]: Without dead ends: 10635 [2021-10-07 16:26:18,146 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2512.1ms TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:26:18,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10635 states. [2021-10-07 16:26:18,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10635 to 2145. [2021-10-07 16:26:18,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2145 states, 1767 states have (on average 4.1675155631013014) internal successors, (7364), 2144 states have internal predecessors, (7364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:18,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 7364 transitions. [2021-10-07 16:26:18,347 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 7364 transitions. Word has length 5 [2021-10-07 16:26:18,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:26:18,348 INFO L470 AbstractCegarLoop]: Abstraction has 2145 states and 7364 transitions. [2021-10-07 16:26:18,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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) [2021-10-07 16:26:18,348 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 7364 transitions. [2021-10-07 16:26:18,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 16:26:18,349 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:26:18,349 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 16:26:18,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-07 16:26:18,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:26:18,566 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 45 more)] === [2021-10-07 16:26:18,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:26:18,568 INFO L82 PathProgramCache]: Analyzing trace with hash 796483545, now seen corresponding path program 1 times [2021-10-07 16:26:18,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:26:18,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063683250] [2021-10-07 16:26:18,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:26:18,569 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:26:18,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:26:18,570 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:26:18,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-07 16:26:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:26:18,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 16:26:18,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:26:19,038 INFO L354 Elim1Store]: treesize reduction 361, result has 14.7 percent of original size [2021-10-07 16:26:19,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 9 case distinctions, treesize of input 300 treesize of output 324 [2021-10-07 16:26:25,951 INFO L354 Elim1Store]: treesize reduction 186, result has 38.4 percent of original size [2021-10-07 16:26:25,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 113 treesize of output 213 [2021-10-07 16:26:40,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 16:26:40,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:26:40,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 16:26:40,097 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:26:40,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063683250] [2021-10-07 16:26:40,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2063683250] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:26:40,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:26:40,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 1] imperfect sequences [] total 3 [2021-10-07 16:26:40,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879831329] [2021-10-07 16:26:40,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 16:26:40,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:26:40,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 16:26:40,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=9, Unknown=2, NotChecked=0, Total=20 [2021-10-07 16:26:40,100 INFO L87 Difference]: Start difference. First operand 2145 states and 7364 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:26:52,271 WARN L207 SmtUtils]: Spent 8.09 s on a formula simplification. DAG size of input: 104 DAG size of output: 99 [2021-10-07 16:28:36,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:28:36,862 INFO L93 Difference]: Finished difference Result 3038 states and 9906 transitions. [2021-10-07 16:28:36,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:28:36,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 16:28:36,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:28:36,887 INFO L225 Difference]: With dead ends: 3038 [2021-10-07 16:28:36,888 INFO L226 Difference]: Without dead ends: 3038 [2021-10-07 16:28:36,888 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16193.7ms TimeCoverageRelationStatistics Valid=14, Invalid=12, Unknown=4, NotChecked=0, Total=30 [2021-10-07 16:28:36,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2021-10-07 16:28:36,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 1632. [2021-10-07 16:28:36,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1380 states have (on average 3.8434782608695652) internal successors, (5304), 1631 states have internal predecessors, (5304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:28:36,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 5304 transitions. [2021-10-07 16:28:36,974 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 5304 transitions. Word has length 5 [2021-10-07 16:28:36,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:28:36,974 INFO L470 AbstractCegarLoop]: Abstraction has 1632 states and 5304 transitions. [2021-10-07 16:28:36,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:28:36,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 5304 transitions. [2021-10-07 16:28:36,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 16:28:36,976 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:28:36,976 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:28:36,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-07 16:28:37,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:28:37,177 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 45 more)] === [2021-10-07 16:28:37,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:28:37,178 INFO L82 PathProgramCache]: Analyzing trace with hash 916525346, now seen corresponding path program 1 times [2021-10-07 16:28:37,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:28:37,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776769261] [2021-10-07 16:28:37,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:28:37,179 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:28:37,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:28:37,184 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:28:37,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-07 16:28:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:28:37,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:28:37,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:28:37,666 INFO L354 Elim1Store]: treesize reduction 353, result has 14.9 percent of original size [2021-10-07 16:28:37,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 301 treesize of output 327 [2021-10-07 16:28:41,782 INFO L354 Elim1Store]: treesize reduction 186, result has 38.4 percent of original size [2021-10-07 16:28:41,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 100 treesize of output 200 [2021-10-07 16:28:57,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 16:28:57,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:28:57,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 16:28:57,639 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:28:57,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776769261] [2021-10-07 16:28:57,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [776769261] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:28:57,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:28:57,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 1] imperfect sequences [] total 3 [2021-10-07 16:28:57,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898335749] [2021-10-07 16:28:57,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 16:28:57,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:28:57,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 16:28:57,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=9, Unknown=2, NotChecked=0, Total=20 [2021-10-07 16:28:57,643 INFO L87 Difference]: Start difference. First operand 1632 states and 5304 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:04,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:04,493 INFO L93 Difference]: Finished difference Result 1560 states and 5096 transitions. [2021-10-07 16:29:04,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:29:04,495 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 16:29:04,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:04,500 INFO L225 Difference]: With dead ends: 1560 [2021-10-07 16:29:04,500 INFO L226 Difference]: Without dead ends: 1560 [2021-10-07 16:29:04,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10541.0ms TimeCoverageRelationStatistics Valid=14, Invalid=12, Unknown=4, NotChecked=0, Total=30 [2021-10-07 16:29:04,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2021-10-07 16:29:04,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1560. [2021-10-07 16:29:04,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1560 states, 1338 states have (on average 3.8086696562032887) internal successors, (5096), 1559 states have internal predecessors, (5096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:04,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 5096 transitions. [2021-10-07 16:29:04,553 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 5096 transitions. Word has length 7 [2021-10-07 16:29:04,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:04,553 INFO L470 AbstractCegarLoop]: Abstraction has 1560 states and 5096 transitions. [2021-10-07 16:29:04,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:04,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 5096 transitions. [2021-10-07 16:29:04,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 16:29:04,554 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:04,554 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:04,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-07 16:29:04,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:29:04,768 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 45 more)] === [2021-10-07 16:29:04,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:04,769 INFO L82 PathProgramCache]: Analyzing trace with hash 916525347, now seen corresponding path program 1 times [2021-10-07 16:29:04,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:04,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394392483] [2021-10-07 16:29:04,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:29:04,770 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:04,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:04,771 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:29:04,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-07 16:29:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:29:04,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:29:04,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:04,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:29:04,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:29:05,221 INFO L354 Elim1Store]: treesize reduction 239, result has 19.3 percent of original size [2021-10-07 16:29:05,221 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 5 case distinctions, treesize of input 55 treesize of output 95 [2021-10-07 16:29:05,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 120 [2021-10-07 16:29:08,048 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-10-07 16:29:08,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 74 [2021-10-07 16:29:08,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:29:08,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:09,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:29:09,027 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:09,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394392483] [2021-10-07 16:29:09,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1394392483] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:09,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:09,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 16:29:09,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755762929] [2021-10-07 16:29:09,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:29:09,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:09,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:29:09,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:29:09,028 INFO L87 Difference]: Start difference. First operand 1560 states and 5096 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:14,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:14,247 INFO L93 Difference]: Finished difference Result 7366 states and 24291 transitions. [2021-10-07 16:29:14,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 16:29:14,249 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 16:29:14,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:14,301 INFO L225 Difference]: With dead ends: 7366 [2021-10-07 16:29:14,301 INFO L226 Difference]: Without dead ends: 7366 [2021-10-07 16:29:14,301 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2057.5ms TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:29:14,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7366 states. [2021-10-07 16:29:14,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7366 to 1505. [2021-10-07 16:29:14,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1308 states have (on average 3.7622324159021407) internal successors, (4921), 1504 states have internal predecessors, (4921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:14,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 4921 transitions. [2021-10-07 16:29:14,406 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 4921 transitions. Word has length 7 [2021-10-07 16:29:14,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:14,407 INFO L470 AbstractCegarLoop]: Abstraction has 1505 states and 4921 transitions. [2021-10-07 16:29:14,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:14,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 4921 transitions. [2021-10-07 16:29:14,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:29:14,408 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:14,408 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:14,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-07 16:29:14,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:29:14,622 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 45 more)] === [2021-10-07 16:29:14,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:14,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1652492493, now seen corresponding path program 1 times [2021-10-07 16:29:14,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:14,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876296681] [2021-10-07 16:29:14,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:29:14,624 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:14,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:14,625 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:29:14,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-07 16:29:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:29:14,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 16:29:14,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:14,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:29:14,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:15,081 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 25 treesize of output 21 [2021-10-07 16:29:15,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:29:15,175 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:15,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876296681] [2021-10-07 16:29:15,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1876296681] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:15,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:15,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 16:29:15,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846357727] [2021-10-07 16:29:15,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:29:15,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:15,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:29:15,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:29:15,178 INFO L87 Difference]: Start difference. First operand 1505 states and 4921 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:16,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:16,618 INFO L93 Difference]: Finished difference Result 5286 states and 17325 transitions. [2021-10-07 16:29:16,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 16:29:16,620 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 16:29:16,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:16,638 INFO L225 Difference]: With dead ends: 5286 [2021-10-07 16:29:16,638 INFO L226 Difference]: Without dead ends: 5286 [2021-10-07 16:29:16,638 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 500.3ms TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-10-07 16:29:16,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5286 states. [2021-10-07 16:29:16,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5286 to 1669. [2021-10-07 16:29:16,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1669 states, 1472 states have (on average 4.163722826086956) internal successors, (6129), 1668 states have internal predecessors, (6129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:16,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 6129 transitions. [2021-10-07 16:29:16,749 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 6129 transitions. Word has length 8 [2021-10-07 16:29:16,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:16,750 INFO L470 AbstractCegarLoop]: Abstraction has 1669 states and 6129 transitions. [2021-10-07 16:29:16,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:16,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 6129 transitions. [2021-10-07 16:29:16,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:29:16,751 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:16,751 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:16,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-07 16:29:16,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:29:16,954 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 45 more)] === [2021-10-07 16:29:16,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:16,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1652492492, now seen corresponding path program 1 times [2021-10-07 16:29:16,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:16,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401125588] [2021-10-07 16:29:16,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:29:16,957 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:16,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:16,958 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:29:16,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-07 16:29:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:29:17,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:29:17,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:17,104 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 [2021-10-07 16:29:17,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 16:29:17,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:17,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 16:29:17,152 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:17,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401125588] [2021-10-07 16:29:17,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401125588] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:29:17,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:29:17,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-07 16:29:17,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428877841] [2021-10-07 16:29:17,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:29:17,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:17,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:29:17,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:29:17,154 INFO L87 Difference]: Start difference. First operand 1669 states and 6129 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:17,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:17,372 INFO L93 Difference]: Finished difference Result 1198 states and 4276 transitions. [2021-10-07 16:29:17,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:29:17,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 8 [2021-10-07 16:29:17,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:17,378 INFO L225 Difference]: With dead ends: 1198 [2021-10-07 16:29:17,378 INFO L226 Difference]: Without dead ends: 1198 [2021-10-07 16:29:17,378 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 16:29:17,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2021-10-07 16:29:17,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1198. [2021-10-07 16:29:17,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1198 states, 1084 states have (on average 3.944649446494465) internal successors, (4276), 1197 states have internal predecessors, (4276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:17,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 4276 transitions. [2021-10-07 16:29:17,413 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 4276 transitions. Word has length 8 [2021-10-07 16:29:17,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:17,413 INFO L470 AbstractCegarLoop]: Abstraction has 1198 states and 4276 transitions. [2021-10-07 16:29:17,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:17,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 4276 transitions. [2021-10-07 16:29:17,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:29:17,414 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:17,414 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:17,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-07 16:29:17,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:29:17,627 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 45 more)] === [2021-10-07 16:29:17,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:17,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1652492619, now seen corresponding path program 1 times [2021-10-07 16:29:17,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:17,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831752444] [2021-10-07 16:29:17,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:29:17,630 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:17,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:17,631 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:29:17,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-07 16:29:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:29:17,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:29:17,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:18,054 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-07 16:29:18,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-07 16:29:18,604 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-07 16:29:18,604 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 22 treesize of output 29 [2021-10-07 16:29:18,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 16:29:18,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:20,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 16:29:20,757 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:20,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831752444] [2021-10-07 16:29:20,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [831752444] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:29:20,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:29:20,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 5 [2021-10-07 16:29:20,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685571268] [2021-10-07 16:29:20,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 16:29:20,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:20,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 16:29:20,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=24, Unknown=1, NotChecked=0, Total=42 [2021-10-07 16:29:20,760 INFO L87 Difference]: Start difference. First operand 1198 states and 4276 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:20,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:20,960 INFO L93 Difference]: Finished difference Result 827 states and 2843 transitions. [2021-10-07 16:29:20,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:29:20,962 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 16:29:20,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:20,965 INFO L225 Difference]: With dead ends: 827 [2021-10-07 16:29:20,966 INFO L226 Difference]: Without dead ends: 827 [2021-10-07 16:29:20,966 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2058.8ms TimeCoverageRelationStatistics Valid=17, Invalid=24, Unknown=1, NotChecked=0, Total=42 [2021-10-07 16:29:20,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2021-10-07 16:29:20,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 827. [2021-10-07 16:29:20,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 768 states have (on average 3.7018229166666665) internal successors, (2843), 826 states have internal predecessors, (2843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:20,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 2843 transitions. [2021-10-07 16:29:20,988 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 2843 transitions. Word has length 8 [2021-10-07 16:29:20,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:20,989 INFO L470 AbstractCegarLoop]: Abstraction has 827 states and 2843 transitions. [2021-10-07 16:29:20,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:20,989 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 2843 transitions. [2021-10-07 16:29:20,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:29:20,991 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:20,991 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:29:21,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-07 16:29:21,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:29:21,207 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 45 more)] === [2021-10-07 16:29:21,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:29:21,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1652492618, now seen corresponding path program 1 times [2021-10-07 16:29:21,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:29:21,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359625187] [2021-10-07 16:29:21,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:29:21,210 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:29:21,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:29:21,211 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:29:21,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-07 16:29:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:29:21,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 16:29:21,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:21,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:29:21,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:29:21,699 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:29:21,699 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 5 case distinctions, treesize of input 48 treesize of output 98 [2021-10-07 16:29:21,975 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-07 16:29:21,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 143 [2021-10-07 16:29:35,077 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:29:35,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359625187] [2021-10-07 16:29:35,077 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-10-07 16:29:35,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2033296058] [2021-10-07 16:29:35,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:29:35,078 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-07 16:29:35,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 [2021-10-07 16:29:35,081 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-07 16:29:35,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-10-07 16:29:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:29:35,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 16:29:35,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:35,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:29:35,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:29:35,736 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:29:35,737 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 5 case distinctions, treesize of input 48 treesize of output 98 [2021-10-07 16:29:35,995 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-07 16:29:35,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 143 [2021-10-07 16:29:49,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-10-07 16:29:49,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44394719] [2021-10-07 16:29:49,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:29:49,001 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 16:29:49,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 16:29:49,004 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 16:29:49,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-07 16:29:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:29:49,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:29:49,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:29:49,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:29:49,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:29:49,501 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:29:49,502 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 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-07 16:29:49,684 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-07 16:29:49,684 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 16 treesize of output 18 [2021-10-07 16:29:49,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:49,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:29:50,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:29:50,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44394719] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:29:50,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:29:50,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-07 16:29:50,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138485754] [2021-10-07 16:29:50,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 16:29:50,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:29:50,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 16:29:50,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:29:50,995 INFO L87 Difference]: Start difference. First operand 827 states and 2843 transitions. Second operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:59,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:29:59,362 INFO L93 Difference]: Finished difference Result 4296 states and 14469 transitions. [2021-10-07 16:29:59,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 16:29:59,365 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 16:29:59,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:29:59,385 INFO L225 Difference]: With dead ends: 4296 [2021-10-07 16:29:59,386 INFO L226 Difference]: Without dead ends: 4296 [2021-10-07 16:29:59,386 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 5391.8ms TimeCoverageRelationStatistics Valid=276, Invalid=914, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 16:29:59,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4296 states. [2021-10-07 16:29:59,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4296 to 1390. [2021-10-07 16:29:59,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1331 states have (on average 3.7956423741547707) internal successors, (5052), 1389 states have internal predecessors, (5052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:59,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 5052 transitions. [2021-10-07 16:29:59,495 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 5052 transitions. Word has length 8 [2021-10-07 16:29:59,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:29:59,495 INFO L470 AbstractCegarLoop]: Abstraction has 1390 states and 5052 transitions. [2021-10-07 16:29:59,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:29:59,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 5052 transitions. [2021-10-07 16:29:59,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:29:59,497 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:29:59,497 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2021-10-07 16:29:59,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-07 16:29:59,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-07 16:29:59,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-10-07 16:30:00,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-10-07 16:30:00,109 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 45 more)] === [2021-10-07 16:30:00,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:30:00,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1479105255, now seen corresponding path program 2 times [2021-10-07 16:30:00,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:30:00,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196018678] [2021-10-07 16:30:00,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:30:00,111 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:30:00,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:30:00,113 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) [2021-10-07 16:30:00,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-07 16:30:00,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 16:30:00,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:30:00,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:30:00,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:30:00,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:30:00,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:30:00,653 INFO L354 Elim1Store]: treesize reduction 245, result has 17.2 percent of original size [2021-10-07 16:30:00,653 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 5 case distinctions, treesize of input 74 treesize of output 108 [2021-10-07 16:30:00,664 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-07 16:30:00,665 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 248 treesize of output 238 [2021-10-07 16:30:07,573 INFO L354 Elim1Store]: treesize reduction 84, result has 36.8 percent of original size [2021-10-07 16:30:07,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 96 [2021-10-07 16:30:16,743 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-07 16:30:16,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:30:16,995 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-07 16:30:16,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:30:16,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196018678] [2021-10-07 16:30:16,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196018678] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:30:16,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:30:16,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 16:30:16,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726500566] [2021-10-07 16:30:16,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:30:16,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:30:16,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:30:16,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=15, Unknown=1, NotChecked=0, Total=30 [2021-10-07 16:30:16,998 INFO L87 Difference]: Start difference. First operand 1390 states and 5052 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) [2021-10-07 16:30:23,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:30:23,713 INFO L93 Difference]: Finished difference Result 1389 states and 5046 transitions. [2021-10-07 16:30:23,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:30:23,715 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 8 [2021-10-07 16:30:23,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:30:23,719 INFO L225 Difference]: With dead ends: 1389 [2021-10-07 16:30:23,719 INFO L226 Difference]: Without dead ends: 1389 [2021-10-07 16:30:23,720 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2911.9ms TimeCoverageRelationStatistics Valid=20, Invalid=21, Unknown=1, NotChecked=0, Total=42 [2021-10-07 16:30:23,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2021-10-07 16:30:23,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1389. [2021-10-07 16:30:23,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 1331 states have (on average 3.7911344853493616) internal successors, (5046), 1388 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:30:23,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 5046 transitions. [2021-10-07 16:30:23,747 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 5046 transitions. Word has length 8 [2021-10-07 16:30:23,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:30:23,747 INFO L470 AbstractCegarLoop]: Abstraction has 1389 states and 5046 transitions. [2021-10-07 16:30:23,747 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) [2021-10-07 16:30:23,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 5046 transitions. [2021-10-07 16:30:23,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:30:23,748 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:30:23,748 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1] [2021-10-07 16:30:23,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-07 16:30:23,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:30:23,951 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 45 more)] === [2021-10-07 16:30:23,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:30:23,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1479066109, now seen corresponding path program 2 times [2021-10-07 16:30:23,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:30:23,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712724862] [2021-10-07 16:30:23,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:30:23,954 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:30:23,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:30:23,955 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:30:23,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-07 16:30:24,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:30:24,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:30:24,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 16:30:24,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:30:24,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:30:24,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:30:24,444 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:30:24,444 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 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-07 16:30:24,802 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:30:24,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:30:26,871 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:30:26,871 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:30:26,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712724862] [2021-10-07 16:30:26,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712724862] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:30:26,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:30:26,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:30:26,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137504333] [2021-10-07 16:30:26,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:30:26,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:30:26,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:30:26,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:30:26,874 INFO L87 Difference]: Start difference. First operand 1389 states and 5046 transitions. Second operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:30:48,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:30:48,121 INFO L93 Difference]: Finished difference Result 7014 states and 24625 transitions. [2021-10-07 16:30:48,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 16:30:48,125 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 16:30:48,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:30:48,157 INFO L225 Difference]: With dead ends: 7014 [2021-10-07 16:30:48,157 INFO L226 Difference]: Without dead ends: 7014 [2021-10-07 16:30:48,158 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 5832.9ms TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:30:48,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7014 states. [2021-10-07 16:30:48,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7014 to 1403. [2021-10-07 16:30:48,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 1345 states have (on average 3.7724907063197026) internal successors, (5074), 1402 states have internal predecessors, (5074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:30:48,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 5074 transitions. [2021-10-07 16:30:48,252 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 5074 transitions. Word has length 8 [2021-10-07 16:30:48,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:30:48,252 INFO L470 AbstractCegarLoop]: Abstraction has 1403 states and 5074 transitions. [2021-10-07 16:30:48,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:30:48,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 5074 transitions. [2021-10-07 16:30:48,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 16:30:48,257 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:30:48,257 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:30:48,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-07 16:30:48,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:30:48,472 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 45 more)] === [2021-10-07 16:30:48,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:30:48,473 INFO L82 PathProgramCache]: Analyzing trace with hash 312581919, now seen corresponding path program 1 times [2021-10-07 16:30:48,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:30:48,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712036259] [2021-10-07 16:30:48,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:30:48,475 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:30:48,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:30:48,476 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:30:48,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-07 16:30:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:30:48,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 16:30:48,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:30:48,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:30:48,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:30:48,977 INFO L354 Elim1Store]: treesize reduction 247, result has 16.6 percent of original size [2021-10-07 16:30:48,978 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 5 case distinctions, treesize of input 49 treesize of output 81 [2021-10-07 16:30:48,984 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 113 treesize of output 111 [2021-10-07 16:30:49,466 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-10-07 16:30:49,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 53 treesize of output 64 [2021-10-07 16:30:50,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:30:50,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:30:50,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:30:50,758 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:30:50,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712036259] [2021-10-07 16:30:50,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712036259] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:30:50,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:30:50,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 16:30:50,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211705297] [2021-10-07 16:30:50,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:30:50,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:30:50,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:30:50,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:30:50,760 INFO L87 Difference]: Start difference. First operand 1403 states and 5074 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:30:54,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:30:54,568 INFO L93 Difference]: Finished difference Result 2602 states and 8923 transitions. [2021-10-07 16:30:54,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 16:30:54,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-07 16:30:54,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:30:54,577 INFO L225 Difference]: With dead ends: 2602 [2021-10-07 16:30:54,578 INFO L226 Difference]: Without dead ends: 2602 [2021-10-07 16:30:54,578 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1878.4ms TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:30:54,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2021-10-07 16:30:54,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 1430. [2021-10-07 16:30:54,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1375 states have (on average 3.773090909090909) internal successors, (5188), 1429 states have internal predecessors, (5188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:30:54,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 5188 transitions. [2021-10-07 16:30:54,626 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 5188 transitions. Word has length 9 [2021-10-07 16:30:54,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:30:54,626 INFO L470 AbstractCegarLoop]: Abstraction has 1430 states and 5188 transitions. [2021-10-07 16:30:54,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:30:54,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 5188 transitions. [2021-10-07 16:30:54,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 16:30:54,627 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:30:54,627 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:30:54,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-07 16:30:54,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:30:54,841 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 45 more)] === [2021-10-07 16:30:54,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:30:54,842 INFO L82 PathProgramCache]: Analyzing trace with hash 312581921, now seen corresponding path program 1 times [2021-10-07 16:30:54,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:30:54,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1591639508] [2021-10-07 16:30:54,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:30:54,843 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:30:54,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:30:54,844 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:30:54,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-07 16:30:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:30:55,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:30:55,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:30:55,334 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-07 16:30:55,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 125 [2021-10-07 16:30:59,840 INFO L354 Elim1Store]: treesize reduction 175, result has 42.1 percent of original size [2021-10-07 16:30:59,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 218 [2021-10-07 16:31:34,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 16:31:34,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:31:35,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 16:31:35,021 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:31:35,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1591639508] [2021-10-07 16:31:35,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1591639508] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:31:35,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:31:35,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:31:35,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462816854] [2021-10-07 16:31:35,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:31:35,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:31:35,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:31:35,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:31:35,024 INFO L87 Difference]: Start difference. First operand 1430 states and 5188 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:31:35,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:31:35,242 INFO L93 Difference]: Finished difference Result 1358 states and 4902 transitions. [2021-10-07 16:31:35,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:31:35,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-07 16:31:35,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:31:35,250 INFO L225 Difference]: With dead ends: 1358 [2021-10-07 16:31:35,251 INFO L226 Difference]: Without dead ends: 1358 [2021-10-07 16:31:35,251 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 214.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:31:35,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2021-10-07 16:31:35,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 1358. [2021-10-07 16:31:35,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1315 states have (on average 3.7277566539923956) internal successors, (4902), 1357 states have internal predecessors, (4902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:31:35,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 4902 transitions. [2021-10-07 16:31:35,280 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 4902 transitions. Word has length 9 [2021-10-07 16:31:35,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:31:35,280 INFO L470 AbstractCegarLoop]: Abstraction has 1358 states and 4902 transitions. [2021-10-07 16:31:35,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:31:35,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 4902 transitions. [2021-10-07 16:31:35,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 16:31:35,281 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:31:35,281 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:31:35,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-07 16:31:35,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:31:35,482 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 45 more)] === [2021-10-07 16:31:35,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:31:35,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1100098686, now seen corresponding path program 1 times [2021-10-07 16:31:35,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:31:35,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855171330] [2021-10-07 16:31:35,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:31:35,484 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:31:35,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:31:35,487 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:31:35,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-07 16:31:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:31:35,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:31:35,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:31:35,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:31:35,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:31:36,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:31:36,135 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:31:36,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855171330] [2021-10-07 16:31:36,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855171330] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:31:36,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:31:36,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 16:31:36,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2966098] [2021-10-07 16:31:36,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 16:31:36,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:31:36,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 16:31:36,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:31:36,137 INFO L87 Difference]: Start difference. First operand 1358 states and 4902 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) [2021-10-07 16:31:37,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:31:37,234 INFO L93 Difference]: Finished difference Result 1517 states and 5105 transitions. [2021-10-07 16:31:37,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 16:31:37,235 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 [2021-10-07 16:31:37,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:31:37,239 INFO L225 Difference]: With dead ends: 1517 [2021-10-07 16:31:37,239 INFO L226 Difference]: Without dead ends: 1517 [2021-10-07 16:31:37,240 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 413.8ms TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-10-07 16:31:37,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2021-10-07 16:31:37,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1384. [2021-10-07 16:31:37,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1341 states have (on average 3.563012677106637) internal successors, (4778), 1383 states have internal predecessors, (4778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:31:37,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 4778 transitions. [2021-10-07 16:31:37,275 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 4778 transitions. Word has length 10 [2021-10-07 16:31:37,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:31:37,275 INFO L470 AbstractCegarLoop]: Abstraction has 1384 states and 4778 transitions. [2021-10-07 16:31:37,275 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) [2021-10-07 16:31:37,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 4778 transitions. [2021-10-07 16:31:37,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 16:31:37,276 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:31:37,276 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:31:37,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-07 16:31:37,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:31:37,490 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 45 more)] === [2021-10-07 16:31:37,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:31:37,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1092518746, now seen corresponding path program 1 times [2021-10-07 16:31:37,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:31:37,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655602067] [2021-10-07 16:31:37,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:31:37,492 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:31:37,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:31:37,493 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:31:37,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-07 16:31:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:31:37,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:31:37,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:31:37,814 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 [2021-10-07 16:31:38,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 16:31:38,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:31:38,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 16:31:38,546 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:31:38,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655602067] [2021-10-07 16:31:38,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655602067] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:31:38,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:31:38,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 16:31:38,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684567480] [2021-10-07 16:31:38,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 16:31:38,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:31:38,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 16:31:38,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:31:38,548 INFO L87 Difference]: Start difference. First operand 1384 states and 4778 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) [2021-10-07 16:31:40,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:31:40,273 INFO L93 Difference]: Finished difference Result 3366 states and 11413 transitions. [2021-10-07 16:31:40,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 16:31:40,275 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 [2021-10-07 16:31:40,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:31:40,287 INFO L225 Difference]: With dead ends: 3366 [2021-10-07 16:31:40,287 INFO L226 Difference]: Without dead ends: 3366 [2021-10-07 16:31:40,287 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 902.4ms TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2021-10-07 16:31:40,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3366 states. [2021-10-07 16:31:40,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3366 to 2343. [2021-10-07 16:31:40,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2343 states, 2301 states have (on average 3.8257279443720122) internal successors, (8803), 2342 states have internal predecessors, (8803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:31:40,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2343 states to 2343 states and 8803 transitions. [2021-10-07 16:31:40,364 INFO L78 Accepts]: Start accepts. Automaton has 2343 states and 8803 transitions. Word has length 10 [2021-10-07 16:31:40,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:31:40,364 INFO L470 AbstractCegarLoop]: Abstraction has 2343 states and 8803 transitions. [2021-10-07 16:31:40,364 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) [2021-10-07 16:31:40,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2343 states and 8803 transitions. [2021-10-07 16:31:40,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 16:31:40,365 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:31:40,365 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:31:40,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-07 16:31:40,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:31:40,572 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 45 more)] === [2021-10-07 16:31:40,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:31:40,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1092518621, now seen corresponding path program 1 times [2021-10-07 16:31:40,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:31:40,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877707848] [2021-10-07 16:31:40,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:31:40,574 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:31:40,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:31:40,576 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:31:40,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-07 16:31:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:31:40,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 16:31:40,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:31:41,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:31:41,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:31:41,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:31:41,220 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:31:41,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [877707848] [2021-10-07 16:31:41,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [877707848] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:31:41,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:31:41,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 16:31:41,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997411328] [2021-10-07 16:31:41,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 16:31:41,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:31:41,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 16:31:41,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:31:41,222 INFO L87 Difference]: Start difference. First operand 2343 states and 8803 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) [2021-10-07 16:31:42,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:31:42,146 INFO L93 Difference]: Finished difference Result 2050 states and 7143 transitions. [2021-10-07 16:31:42,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 16:31:42,149 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 [2021-10-07 16:31:42,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:31:42,157 INFO L225 Difference]: With dead ends: 2050 [2021-10-07 16:31:42,158 INFO L226 Difference]: Without dead ends: 2050 [2021-10-07 16:31:42,158 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 359.4ms TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-10-07 16:31:42,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2050 states. [2021-10-07 16:31:42,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2050 to 1993. [2021-10-07 16:31:42,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1951 states have (on average 3.6145566376217326) internal successors, (7052), 1992 states have internal predecessors, (7052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:31:42,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 7052 transitions. [2021-10-07 16:31:42,217 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 7052 transitions. Word has length 10 [2021-10-07 16:31:42,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:31:42,218 INFO L470 AbstractCegarLoop]: Abstraction has 1993 states and 7052 transitions. [2021-10-07 16:31:42,218 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) [2021-10-07 16:31:42,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 7052 transitions. [2021-10-07 16:31:42,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 16:31:42,219 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:31:42,219 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-10-07 16:31:42,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-07 16:31:42,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:31:42,432 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 45 more)] === [2021-10-07 16:31:42,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:31:42,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1451069907, now seen corresponding path program 2 times [2021-10-07 16:31:42,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:31:42,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683394889] [2021-10-07 16:31:42,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:31:42,434 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:31:42,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:31:42,436 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:31:42,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-07 16:31:42,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 16:31:42,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:31:42,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:31:42,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:31:42,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:31:42,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:31:43,017 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:31:43,017 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 5 case distinctions, treesize of input 48 treesize of output 98 [2021-10-07 16:31:43,280 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-07 16:31:43,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 143 [2021-10-07 16:31:58,091 INFO L354 Elim1Store]: treesize reduction 108, result has 18.8 percent of original size [2021-10-07 16:31:58,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 316 treesize of output 273 [2021-10-07 16:31:58,220 INFO L354 Elim1Store]: treesize reduction 24, result has 70.4 percent of original size [2021-10-07 16:31:58,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 318 treesize of output 362 [2021-10-07 16:32:04,231 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 16:32:04,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:04,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 16:32:04,739 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:04,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683394889] [2021-10-07 16:32:04,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683394889] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:32:04,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:32:04,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-07 16:32:04,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252477980] [2021-10-07 16:32:04,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:32:04,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:04,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:32:04,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:32:04,741 INFO L87 Difference]: Start difference. First operand 1993 states and 7052 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) [2021-10-07 16:32:08,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:32:08,301 INFO L93 Difference]: Finished difference Result 1963 states and 6835 transitions. [2021-10-07 16:32:08,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 16:32:08,302 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 10 [2021-10-07 16:32:08,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:32:08,308 INFO L225 Difference]: With dead ends: 1963 [2021-10-07 16:32:08,308 INFO L226 Difference]: Without dead ends: 1963 [2021-10-07 16:32:08,309 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2775.0ms TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:32:08,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2021-10-07 16:32:08,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1877. [2021-10-07 16:32:08,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1877 states, 1835 states have (on average 3.580926430517711) internal successors, (6571), 1876 states have internal predecessors, (6571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:08,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 6571 transitions. [2021-10-07 16:32:08,342 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 6571 transitions. Word has length 10 [2021-10-07 16:32:08,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:32:08,343 INFO L470 AbstractCegarLoop]: Abstraction has 1877 states and 6571 transitions. [2021-10-07 16:32:08,343 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) [2021-10-07 16:32:08,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 6571 transitions. [2021-10-07 16:32:08,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 16:32:08,343 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:32:08,343 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2021-10-07 16:32:08,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-10-07 16:32:08,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:32:08,545 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 45 more)] === [2021-10-07 16:32:08,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:32:08,545 INFO L82 PathProgramCache]: Analyzing trace with hash -214005709, now seen corresponding path program 2 times [2021-10-07 16:32:08,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:32:08,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950232751] [2021-10-07 16:32:08,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:32:08,547 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:32:08,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:32:08,547 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:32:08,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-07 16:32:08,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 16:32:08,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:32:08,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 16:32:08,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:32:08,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:32:08,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:32:09,124 INFO L354 Elim1Store]: treesize reduction 239, result has 19.3 percent of original size [2021-10-07 16:32:09,125 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 5 case distinctions, treesize of input 54 treesize of output 94 [2021-10-07 16:32:09,130 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 121 treesize of output 119 [2021-10-07 16:32:14,193 INFO L354 Elim1Store]: treesize reduction 84, result has 36.8 percent of original size [2021-10-07 16:32:14,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 53 treesize of output 92 [2021-10-07 16:32:29,830 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-07 16:32:29,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:30,176 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-07 16:32:30,176 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:30,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950232751] [2021-10-07 16:32:30,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950232751] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:32:30,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:32:30,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-07 16:32:30,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235239382] [2021-10-07 16:32:30,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:32:30,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:30,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:32:30,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=33, Unknown=1, NotChecked=0, Total=56 [2021-10-07 16:32:30,179 INFO L87 Difference]: Start difference. First operand 1877 states and 6571 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:40,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:32:40,248 INFO L93 Difference]: Finished difference Result 1860 states and 6530 transitions. [2021-10-07 16:32:40,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 16:32:40,250 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 16:32:40,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:32:40,257 INFO L225 Difference]: With dead ends: 1860 [2021-10-07 16:32:40,257 INFO L226 Difference]: Without dead ends: 1860 [2021-10-07 16:32:40,257 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4623.6ms TimeCoverageRelationStatistics Valid=36, Invalid=53, Unknown=1, NotChecked=0, Total=90 [2021-10-07 16:32:40,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2021-10-07 16:32:40,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1854. [2021-10-07 16:32:40,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1854 states, 1815 states have (on average 3.5922865013774103) internal successors, (6520), 1853 states have internal predecessors, (6520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:40,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 6520 transitions. [2021-10-07 16:32:40,310 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 6520 transitions. Word has length 10 [2021-10-07 16:32:40,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:32:40,311 INFO L470 AbstractCegarLoop]: Abstraction has 1854 states and 6520 transitions. [2021-10-07 16:32:40,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:40,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 6520 transitions. [2021-10-07 16:32:40,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 16:32:40,312 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:32:40,312 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:32:40,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-07 16:32:40,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:32:40,526 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 45 more)] === [2021-10-07 16:32:40,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:32:40,526 INFO L82 PathProgramCache]: Analyzing trace with hash 639442501, now seen corresponding path program 1 times [2021-10-07 16:32:40,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:32:40,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1591679758] [2021-10-07 16:32:40,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:32:40,528 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:32:40,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:32:40,529 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:32:40,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-07 16:32:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:32:40,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 16:32:40,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:32:40,957 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 [2021-10-07 16:32:41,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:32:41,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:46,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:32:46,363 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:46,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1591679758] [2021-10-07 16:32:46,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1591679758] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:32:46,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:32:46,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 16:32:46,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647869998] [2021-10-07 16:32:46,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 16:32:46,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:46,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 16:32:46,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=100, Unknown=2, NotChecked=0, Total=132 [2021-10-07 16:32:46,365 INFO L87 Difference]: Start difference. First operand 1854 states and 6520 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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) [2021-10-07 16:33:22,102 WARN L207 SmtUtils]: Spent 32.66 s on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2021-10-07 16:33:36,608 WARN L207 SmtUtils]: Spent 8.15 s on a formula simplification that was a NOOP. DAG size: 32 [2021-10-07 16:34:20,609 WARN L207 SmtUtils]: Spent 32.87 s on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-10-07 16:34:49,696 WARN L207 SmtUtils]: Spent 12.33 s on a formula simplification that was a NOOP. DAG size: 43 [2021-10-07 16:35:41,926 WARN L207 SmtUtils]: Spent 33.25 s on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2021-10-07 16:36:32,880 WARN L207 SmtUtils]: Spent 12.43 s on a formula simplification that was a NOOP. DAG size: 49 [2021-10-07 16:37:57,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:37:57,117 INFO L93 Difference]: Finished difference Result 4996 states and 17930 transitions. [2021-10-07 16:37:57,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 16:37:57,169 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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 [2021-10-07 16:37:57,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:37:57,184 INFO L225 Difference]: With dead ends: 4996 [2021-10-07 16:37:57,185 INFO L226 Difference]: Without dead ends: 4996 [2021-10-07 16:37:57,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 167833.9ms TimeCoverageRelationStatistics Valid=177, Invalid=460, Unknown=13, NotChecked=0, Total=650 [2021-10-07 16:37:57,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4996 states. [2021-10-07 16:37:57,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4996 to 2094. [2021-10-07 16:37:57,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2094 states, 2055 states have (on average 3.808759124087591) internal successors, (7827), 2093 states have internal predecessors, (7827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:37:57,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 7827 transitions. [2021-10-07 16:37:57,281 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 7827 transitions. Word has length 12 [2021-10-07 16:37:57,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:37:57,282 INFO L470 AbstractCegarLoop]: Abstraction has 2094 states and 7827 transitions. [2021-10-07 16:37:57,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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) [2021-10-07 16:37:57,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 7827 transitions. [2021-10-07 16:37:57,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 16:37:57,283 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:37:57,283 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:37:57,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-07 16:37:57,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:37:57,497 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 45 more)] === [2021-10-07 16:37:57,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:37:57,498 INFO L82 PathProgramCache]: Analyzing trace with hash 639442462, now seen corresponding path program 1 times [2021-10-07 16:37:57,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:37:57,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876280577] [2021-10-07 16:37:57,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:37:57,499 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:37:57,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:37:57,501 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:37:57,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-07 16:37:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:37:57,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 16:37:57,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:37:57,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:37:57,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:37:58,322 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:37:58,322 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 5 case distinctions, treesize of input 48 treesize of output 98 [2021-10-07 16:37:58,769 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-07 16:37:58,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 143 [2021-10-07 16:38:16,031 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:38:16,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876280577] [2021-10-07 16:38:16,032 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-10-07 16:38:16,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [3855352] [2021-10-07 16:38:16,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:38:16,032 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-07 16:38:16,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 [2021-10-07 16:38:16,034 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-07 16:38:16,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-10-07 16:38:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:38:16,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 16:38:16,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:38:16,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:38:16,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:38:17,279 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:38:17,279 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 5 case distinctions, treesize of input 48 treesize of output 98 [2021-10-07 16:38:17,709 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-07 16:38:17,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 143 [2021-10-07 16:38:34,812 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-10-07 16:38:34,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430853941] [2021-10-07 16:38:34,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:38:34,812 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 16:38:34,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 16:38:34,814 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 16:38:34,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-07 16:38:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:38:35,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-07 16:38:35,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:38:35,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:38:35,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:38:35,820 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:38:35,821 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 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-07 16:38:36,097 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-07 16:38:36,097 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 16 treesize of output 18 [2021-10-07 16:38:36,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:38:36,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:38:38,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:38:38,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430853941] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:38:38,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:38:38,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-07 16:38:38,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812503424] [2021-10-07 16:38:38,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 16:38:38,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:38:38,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 16:38:38,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:38:38,961 INFO L87 Difference]: Start difference. First operand 2094 states and 7827 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) [2021-10-07 16:38:53,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:38:53,584 INFO L93 Difference]: Finished difference Result 4163 states and 15375 transitions. [2021-10-07 16:38:53,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 16:38:53,587 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 [2021-10-07 16:38:53,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:38:53,600 INFO L225 Difference]: With dead ends: 4163 [2021-10-07 16:38:53,600 INFO L226 Difference]: Without dead ends: 4163 [2021-10-07 16:38:53,600 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 11317.0ms TimeCoverageRelationStatistics Valid=299, Invalid=961, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 16:38:53,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4163 states. [2021-10-07 16:38:53,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4163 to 2287. [2021-10-07 16:38:53,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2287 states, 2248 states have (on average 3.7508896797153026) internal successors, (8432), 2286 states have internal predecessors, (8432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:38:53,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 8432 transitions. [2021-10-07 16:38:53,698 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 8432 transitions. Word has length 12 [2021-10-07 16:38:53,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:38:53,699 INFO L470 AbstractCegarLoop]: Abstraction has 2287 states and 8432 transitions. [2021-10-07 16:38:53,699 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) [2021-10-07 16:38:53,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 8432 transitions. [2021-10-07 16:38:53,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 16:38:53,700 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:38:53,700 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:38:53,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-10-07 16:38:53,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-07 16:38:54,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2021-10-07 16:38:54,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-10-07 16:38:54,316 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 45 more)] === [2021-10-07 16:38:54,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:38:54,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1378585509, now seen corresponding path program 2 times [2021-10-07 16:38:54,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:38:54,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603071186] [2021-10-07 16:38:54,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:38:54,318 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:38:54,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:38:54,320 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:38:54,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-07 16:38:54,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 16:38:54,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:38:54,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:38:54,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:38:54,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:38:54,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:38:55,121 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:38:55,122 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 5 case distinctions, treesize of input 48 treesize of output 98 [2021-10-07 16:38:55,574 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-07 16:38:55,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 143 Received shutdown request... [2021-10-07 16:39:09,085 WARN L223 SmtUtils]: Removed 1 from assertion stack [2021-10-07 16:39:09,087 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-07 16:39:09,093 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 16:39:09,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-07 16:39:09,120 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 16:39:09,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:39:09,289 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. [2021-10-07 16:39:09,292 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-07 16:39:09,292 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-07 16:39:09,292 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-07 16:39:09,293 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-07 16:39:09,293 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-07 16:39:09,293 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-07 16:39:09,293 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-07 16:39:09,293 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-07 16:39:09,293 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-07 16:39:09,293 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-07 16:39:09,294 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2REQUIRES_VIOLATION [2021-10-07 16:39:09,294 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3REQUIRES_VIOLATION [2021-10-07 16:39:09,294 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 16:39:09,294 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 16:39:09,294 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 16:39:09,294 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 16:39:09,294 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 16:39:09,295 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 16:39:09,295 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 16:39:09,295 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 16:39:09,295 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-07 16:39:09,295 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-07 16:39:09,295 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-07 16:39:09,295 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-07 16:39:09,295 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-07 16:39:09,296 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-07 16:39:09,296 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-07 16:39:09,296 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-07 16:39:09,296 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-07 16:39:09,296 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-07 16:39:09,296 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-07 16:39:09,296 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-07 16:39:09,296 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:39:09,297 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:39:09,297 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 16:39:09,297 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 16:39:09,297 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-07 16:39:09,297 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-07 16:39:09,297 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-07 16:39:09,297 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-07 16:39:09,297 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-07 16:39:09,297 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-07 16:39:09,298 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-07 16:39:09,298 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-07 16:39:09,298 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-07 16:39:09,298 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-07 16:39:09,298 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2REQUIRES_VIOLATION [2021-10-07 16:39:09,298 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3REQUIRES_VIOLATION [2021-10-07 16:39:09,304 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 16:39:09,304 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 16:39:09,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 04:39:09 BasicIcfg [2021-10-07 16:39:09,306 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 16:39:09,307 INFO L168 Benchmark]: Toolchain (without parser) took 835776.42 ms. Allocated memory was 163.6 MB in the beginning and 237.0 MB in the end (delta: 73.4 MB). Free memory was 138.4 MB in the beginning and 121.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 211.9 MB. Max. memory is 8.0 GB. [2021-10-07 16:39:09,308 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 163.6 MB. Free memory is still 142.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 16:39:09,308 INFO L168 Benchmark]: CACSL2BoogieTranslator took 493.42 ms. Allocated memory is still 163.6 MB. Free memory was 138.1 MB in the beginning and 125.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-07 16:39:09,308 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.99 ms. Allocated memory is still 163.6 MB. Free memory was 124.9 MB in the beginning and 123.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 16:39:09,309 INFO L168 Benchmark]: Boogie Preprocessor took 50.60 ms. Allocated memory is still 163.6 MB. Free memory was 123.0 MB in the beginning and 121.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:39:09,309 INFO L168 Benchmark]: RCFGBuilder took 1081.94 ms. Allocated memory is still 163.6 MB. Free memory was 121.2 MB in the beginning and 136.0 MB in the end (delta: -14.8 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. [2021-10-07 16:39:09,310 INFO L168 Benchmark]: TraceAbstraction took 834077.64 ms. Allocated memory was 163.6 MB in the beginning and 237.0 MB in the end (delta: 73.4 MB). Free memory was 135.4 MB in the beginning and 121.6 MB in the end (delta: 13.8 MB). Peak memory consumption was 209.2 MB. Max. memory is 8.0 GB. [2021-10-07 16:39:09,311 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 163.6 MB. Free memory is still 142.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 493.42 ms. Allocated memory is still 163.6 MB. Free memory was 138.1 MB in the beginning and 125.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 56.99 ms. Allocated memory is still 163.6 MB. Free memory was 124.9 MB in the beginning and 123.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 50.60 ms. Allocated memory is still 163.6 MB. Free memory was 123.0 MB in the beginning and 121.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1081.94 ms. Allocated memory is still 163.6 MB. Free memory was 121.2 MB in the beginning and 136.0 MB in the end (delta: -14.8 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 834077.64 ms. Allocated memory was 163.6 MB in the beginning and 237.0 MB in the end (delta: 73.4 MB). Free memory was 135.4 MB in the beginning and 121.6 MB in the end (delta: 13.8 MB). Peak memory consumption was 209.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 35477.8ms, 214 PlacesBefore, 71 PlacesAfterwards, 221 TransitionsBefore, 66 TransitionsAfterwards, 3264 CoEnabledTransitionPairs, 7 FixpointIterations, 135 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 22 TrivialYvCompositions, 6 ConcurrentYvCompositions, 12 ChoiceCompositions, 237 TotalNumberOfCompositions, 5630 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4138, positive: 4042, positive conditional: 0, positive unconditional: 4042, negative: 96, negative conditional: 0, negative unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1870, positive: 1840, positive conditional: 0, positive unconditional: 1840, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1870, positive: 1840, positive conditional: 0, positive unconditional: 1840, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 30, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1890, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1890, negative conditional: 0, negative unconditional: 1890, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4138, positive: 2202, positive conditional: 0, positive unconditional: 2202, negative: 66, negative conditional: 0, negative unconditional: 66, unknown: 1870, unknown conditional: 0, unknown unconditional: 1870] , Statistics on independence cache: Total cache size (in pairs): 234, Positive cache size: 225, Positive conditional cache size: 0, Positive unconditional cache size: 225, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - 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: 56]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 83]: 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 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - 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 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 82]: 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 13 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 253 locations, 49 error locations. Started 1 CEGAR loops. OverallTime: 833882.5ms, OverallIterations: 24, TraceHistogramMax: 6, EmptinessCheckTime: 38.3ms, AutomataDifference: 529503.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 35649.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 616 SDtfs, 7675 SDslu, 2078 SDs, 0 SdLazy, 5058 SolverSat, 548 SolverUnsat, 128 SolverUnknown, 0 SolverNotchecked, 311651.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 423 GetRequests, 149 SyntacticMatches, 6 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 239323.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2650occurred in iteration=4, InterpolantAutomatonStates: 219, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2378.7ms AutomataMinimizationTime, 23 MinimizatonAttempts, 48311 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 231.3ms SsaConstructionTime, 1550.3ms SatisfiabilityAnalysisTime, 175363.9ms InterpolantComputationTime, 175 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 304 ConstructedInterpolants, 109 QuantifiedInterpolants, 9263 SizeOfPredicates, 221 NumberOfNonLiveVariables, 1825 ConjunctsInSsa, 307 ConjunctsInUnsatCore, 46 InterpolantComputations, 22 PerfectInterpolantSequences, 94/168 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