/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-bad-three-array-sum-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 16:00:32,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 16:00:32,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 16:00:33,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 16:00:33,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-07 16:00:33,102 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-07 16:00:33,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-07 16:00:33,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-07 16:00:33,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-07 16:00:33,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-07 16:00:33,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-07 16:00:33,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-07 16:00:33,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-07 16:00:33,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-07 16:00:33,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-07 16:00:33,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-07 16:00:33,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-07 16:00:33,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-07 16:00:33,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-07 16:00:33,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-07 16:00:33,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-07 16:00:33,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-07 16:00:33,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-07 16:00:33,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-07 16:00:33,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-07 16:00:33,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 16:00:33,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 16:00:33,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 16:00:33,168 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 16:00:33,201 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 16:00:33,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 16:00:33,202 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 16:00:33,202 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 16:00:33,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 16:00:33,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 16:00:33,204 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 16:00:33,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 16:00:33,205 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 16:00:33,205 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 16:00:33,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 16:00:33,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 16:00:33,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 16:00:33,206 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 16:00:33,206 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 16:00:33,206 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 16:00:33,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 16:00:33,207 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 16:00:33,207 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 16:00:33,207 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 16:00:33,207 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 16:00:33,207 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 16:00:33,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 16:00:33,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 16:00:33,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 16:00:33,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:00:33,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 16:00:33,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 16:00:33,209 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 16:00:33,209 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 16:00:33,209 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 16:00:33,209 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 16:00:33,210 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 16:00:33,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 16:00:33,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 16:00:33,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 16:00:33,652 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 16:00:33,652 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 16:00:33,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2021-10-07 16:00:33,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43fe2391e/9616bb0840aa4bbcbc8433002c94c106/FLAGa0643f5fa [2021-10-07 16:00:34,355 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 16:00:34,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2021-10-07 16:00:34,365 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43fe2391e/9616bb0840aa4bbcbc8433002c94c106/FLAGa0643f5fa [2021-10-07 16:00:34,713 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43fe2391e/9616bb0840aa4bbcbc8433002c94c106 [2021-10-07 16:00:34,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 16:00:34,731 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 16:00:34,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 16:00:34,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 16:00:34,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 16:00:34,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:00:34" (1/1) ... [2021-10-07 16:00:34,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@222d200e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:34, skipping insertion in model container [2021-10-07 16:00:34,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:00:34" (1/1) ... [2021-10-07 16:00:34,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 16:00:34,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 16:00:35,019 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-bad-three-array-sum-alt.wvr.c[2352,2365] [2021-10-07 16:00:35,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:00:35,073 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-07 16:00:35,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 16:00:35,132 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-bad-three-array-sum-alt.wvr.c[2352,2365] [2021-10-07 16:00:35,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:00:35,160 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 16:00:35,219 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-bad-three-array-sum-alt.wvr.c[2352,2365] [2021-10-07 16:00:35,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:00:35,248 INFO L208 MainTranslator]: Completed translation [2021-10-07 16:00:35,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:35 WrapperNode [2021-10-07 16:00:35,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 16:00:35,250 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 16:00:35,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 16:00:35,251 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 16:00:35,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:35" (1/1) ... [2021-10-07 16:00:35,276 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:35" (1/1) ... [2021-10-07 16:00:35,307 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 16:00:35,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 16:00:35,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 16:00:35,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 16:00:35,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:35" (1/1) ... [2021-10-07 16:00:35,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:35" (1/1) ... [2021-10-07 16:00:35,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:35" (1/1) ... [2021-10-07 16:00:35,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:35" (1/1) ... [2021-10-07 16:00:35,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:35" (1/1) ... [2021-10-07 16:00:35,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:35" (1/1) ... [2021-10-07 16:00:35,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:35" (1/1) ... [2021-10-07 16:00:35,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 16:00:35,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 16:00:35,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 16:00:35,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 16:00:35,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:35" (1/1) ... [2021-10-07 16:00:35,372 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:00:35,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 16:00:35,406 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 16:00:35,417 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 16:00:35,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 16:00:35,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 16:00:35,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 16:00:35,480 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 16:00:35,480 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 16:00:35,481 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 16:00:35,483 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 16:00:35,484 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-07 16:00:35,484 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-07 16:00:35,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-07 16:00:35,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 16:00:35,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 16:00:35,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 16:00:35,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 16:00:35,488 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 16:00:36,515 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 16:00:36,516 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-07 16:00:36,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:00:36 BoogieIcfgContainer [2021-10-07 16:00:36,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 16:00:36,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 16:00:36,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 16:00:36,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 16:00:36,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 04:00:34" (1/3) ... [2021-10-07 16:00:36,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3124c3a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:00:36, skipping insertion in model container [2021-10-07 16:00:36,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:00:35" (2/3) ... [2021-10-07 16:00:36,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3124c3a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:00:36, skipping insertion in model container [2021-10-07 16:00:36,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:00:36" (3/3) ... [2021-10-07 16:00:36,532 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-three-array-sum-alt.wvr.c [2021-10-07 16:00:36,538 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 16:00:36,539 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2021-10-07 16:00:36,539 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 16:00:36,586 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,586 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,587 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,587 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,587 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,588 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,588 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,588 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,588 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,588 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,589 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,589 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,589 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,589 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,590 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,590 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,590 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,590 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,591 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,591 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,591 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,591 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,591 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,592 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,592 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,592 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,592 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,592 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,593 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,593 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,593 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,594 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,594 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,594 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,594 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,594 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,595 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,595 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,595 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,595 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,595 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,595 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,596 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,596 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,596 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,597 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,597 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,597 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,597 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,597 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,598 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,598 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,598 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,598 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,598 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,599 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,599 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,599 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,599 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,599 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,600 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,600 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,601 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,601 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,601 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,601 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,602 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,602 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,602 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,602 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,602 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,603 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,603 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,603 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,603 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,604 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,604 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,604 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,604 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,605 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,605 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,605 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,606 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,606 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,606 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,606 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,606 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,607 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,607 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,607 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,607 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,608 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,608 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,608 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,608 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,609 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,609 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,609 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,610 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,610 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,610 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,610 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,610 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,611 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,611 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,611 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,611 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,611 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,612 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,612 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,612 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,612 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,612 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,613 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,616 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,617 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,617 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,617 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,617 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,622 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,623 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,623 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,623 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,623 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,625 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,626 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,626 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,626 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,626 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,626 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,627 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:00:36,634 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-07 16:00:36,690 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 16:00:36,698 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 16:00:36,699 INFO L340 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2021-10-07 16:00:36,730 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 16:00:36,742 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 230 places, 239 transitions, 502 flow [2021-10-07 16:00:36,745 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 230 places, 239 transitions, 502 flow [2021-10-07 16:00:36,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 230 places, 239 transitions, 502 flow [2021-10-07 16:00:36,863 INFO L129 PetriNetUnfolder]: 19/236 cut-off events. [2021-10-07 16:00:36,863 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-07 16:00:36,870 INFO L84 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 236 events. 19/236 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 291 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 177. Up to 2 conditions per place. [2021-10-07 16:00:36,876 INFO L116 LiptonReduction]: Number of co-enabled transitions 3634 [2021-10-07 16:01:19,879 INFO L131 LiptonReduction]: Checked pairs total: 4970 [2021-10-07 16:01:19,879 INFO L133 LiptonReduction]: Total number of compositions: 263 [2021-10-07 16:01:19,890 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 67 places, 63 transitions, 150 flow [2021-10-07 16:01:19,980 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1500 states, 1152 states have (on average 4.541666666666667) internal successors, (5232), 1499 states have internal predecessors, (5232), 0 states have call successors, (0), 0 states 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 16:01:19,989 INFO L276 IsEmpty]: Start isEmpty. Operand has 1500 states, 1152 states have (on average 4.541666666666667) internal successors, (5232), 1499 states have internal predecessors, (5232), 0 states have call successors, (0), 0 states 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 16:01:19,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 16:01:19,995 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:01:19,996 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 16:01:19,996 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 43 more)] === [2021-10-07 16:01:20,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:01:20,003 INFO L82 PathProgramCache]: Analyzing trace with hash 28975, now seen corresponding path program 1 times [2021-10-07 16:01:20,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:01:20,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689902258] [2021-10-07 16:01:20,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:01:20,019 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:01:20,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:01:20,022 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 16:01:20,034 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 16:01:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:01:20,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:01:20,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:20,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:01:20,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:01:20,619 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:01:20,620 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 16:01:20,715 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 16:01:20,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:01:20,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:01:20,828 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:01:20,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689902258] [2021-10-07 16:01:20,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689902258] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:01:20,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:01:20,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:01:20,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421182937] [2021-10-07 16:01:20,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:01:20,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:01:20,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:01:20,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:01:20,865 INFO L87 Difference]: Start difference. First operand has 1500 states, 1152 states have (on average 4.541666666666667) internal successors, (5232), 1499 states have internal predecessors, (5232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:21,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:01:21,824 INFO L93 Difference]: Finished difference Result 2504 states and 8697 transitions. [2021-10-07 16:01:21,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:01:21,827 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 16:01:21,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:01:21,878 INFO L225 Difference]: With dead ends: 2504 [2021-10-07 16:01:21,879 INFO L226 Difference]: Without dead ends: 2504 [2021-10-07 16:01:21,880 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 90.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:01:21,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2504 states. [2021-10-07 16:01:22,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2504 to 1257. [2021-10-07 16:01:22,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 980 states have (on average 4.456122448979592) internal successors, (4367), 1256 states have internal predecessors, (4367), 0 states have call successors, (0), 0 states 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 16:01:22,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 4367 transitions. [2021-10-07 16:01:22,034 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 4367 transitions. Word has length 2 [2021-10-07 16:01:22,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:01:22,035 INFO L470 AbstractCegarLoop]: Abstraction has 1257 states and 4367 transitions. [2021-10-07 16:01:22,035 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 16:01:22,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 4367 transitions. [2021-10-07 16:01:22,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 16:01:22,036 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:01:22,036 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 16:01:22,051 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 16:01:22,237 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 16:01:22,238 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 43 more)] === [2021-10-07 16:01:22,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:01:22,240 INFO L82 PathProgramCache]: Analyzing trace with hash 28973, now seen corresponding path program 1 times [2021-10-07 16:01:22,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:01:22,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669002060] [2021-10-07 16:01:22,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:01:22,242 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:01:22,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:01:22,244 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 16:01:22,272 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 16:01:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:01:22,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 16:01:22,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:22,570 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-07 16:01:22,571 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 16:01:23,241 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 16:01:23,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:01:23,246 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 16:01:23,247 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:01:23,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1669002060] [2021-10-07 16:01:23,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1669002060] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:01:23,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:01:23,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 16:01:23,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209622304] [2021-10-07 16:01:23,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:01:23,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:01:23,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:01:23,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:01:23,252 INFO L87 Difference]: Start difference. First operand 1257 states and 4367 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:01:23,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:01:23,708 INFO L93 Difference]: Finished difference Result 1254 states and 4358 transitions. [2021-10-07 16:01:23,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:01:23,709 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 16:01:23,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:01:23,722 INFO L225 Difference]: With dead ends: 1254 [2021-10-07 16:01:23,723 INFO L226 Difference]: Without dead ends: 1254 [2021-10-07 16:01:23,724 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:01:23,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2021-10-07 16:01:23,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1254. [2021-10-07 16:01:23,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 980 states have (on average 4.446938775510204) internal successors, (4358), 1253 states have internal predecessors, (4358), 0 states have call successors, (0), 0 states 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 16:01:23,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 4358 transitions. [2021-10-07 16:01:23,782 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 4358 transitions. Word has length 2 [2021-10-07 16:01:23,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:01:23,782 INFO L470 AbstractCegarLoop]: Abstraction has 1254 states and 4358 transitions. [2021-10-07 16:01:23,783 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 16:01:23,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 4358 transitions. [2021-10-07 16:01:23,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 16:01:23,783 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:01:23,783 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 16:01:23,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-07 16:01:23,996 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 16:01:23,997 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 43 more)] === [2021-10-07 16:01:23,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:01:23,998 INFO L82 PathProgramCache]: Analyzing trace with hash 28103805, now seen corresponding path program 1 times [2021-10-07 16:01:23,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:01:23,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277139359] [2021-10-07 16:01:23,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:01:23,999 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:01:24,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:01:24,001 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 16:01:24,014 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 16:01:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:01:24,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 16:01:24,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:24,552 INFO L354 Elim1Store]: treesize reduction 245, result has 17.2 percent of original size [2021-10-07 16:01:24,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 67 treesize of output 101 [2021-10-07 16:01:24,580 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-07 16:01:24,581 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 193 treesize of output 189 [2021-10-07 16:01:28,086 INFO L354 Elim1Store]: treesize reduction 84, result has 36.8 percent of original size [2021-10-07 16:01:28,087 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 16:01:36,675 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:01:36,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277139359] [2021-10-07 16:01:36,676 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-10-07 16:01:36,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2012065676] [2021-10-07 16:01:36,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:01:36,677 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-07 16:01:36,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 [2021-10-07 16:01:36,680 INFO L229 MonitoredProcess]: Starting monitored process 5 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 16:01:36,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-07 16:01:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:01:36,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 16:01:36,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:37,288 INFO L354 Elim1Store]: treesize reduction 245, result has 17.2 percent of original size [2021-10-07 16:01:37,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 67 treesize of output 101 [2021-10-07 16:01:37,302 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-07 16:01:37,303 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 280 treesize of output 268 [2021-10-07 16:01:41,017 INFO L354 Elim1Store]: treesize reduction 84, result has 36.8 percent of original size [2021-10-07 16:01:41,018 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 16:01:52,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-10-07 16:01:52,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368271661] [2021-10-07 16:01:52,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:01:52,875 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 16:01:52,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 16:01:52,882 INFO L229 MonitoredProcess]: Starting monitored process 6 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 16:01:52,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-07 16:01:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:01:52,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 16:01:52,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:01:53,372 INFO L354 Elim1Store]: treesize reduction 259, result has 12.5 percent of original size [2021-10-07 16:01:53,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 117 treesize of output 137 [2021-10-07 16:01:53,648 INFO L354 Elim1Store]: treesize reduction 374, result has 14.8 percent of original size [2021-10-07 16:01:53,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 388 treesize of output 421 [2021-10-07 16:01:59,048 INFO L354 Elim1Store]: treesize reduction 156, result has 16.1 percent of original size [2021-10-07 16:01:59,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 131 treesize of output 147 [2021-10-07 16:01:59,218 INFO L354 Elim1Store]: treesize reduction 144, result has 33.3 percent of original size [2021-10-07 16:01:59,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 135 treesize of output 193 [2021-10-07 16:02:09,333 INFO L354 Elim1Store]: treesize reduction 212, result has 14.2 percent of original size [2021-10-07 16:02:09,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 192 treesize of output 211 [2021-10-07 16:02:09,561 INFO L354 Elim1Store]: treesize reduction 82, result has 51.5 percent of original size [2021-10-07 16:02:09,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 196 treesize of output 268 [2021-10-07 16:03:43,508 WARN L207 SmtUtils]: Spent 27.92 s on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2021-10-07 16:03:43,510 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 16:03:43,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:03:46,019 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 16:03:46,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368271661] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:03:46,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:03:46,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-07 16:03:46,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092320984] [2021-10-07 16:03:46,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:03:46,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:03:46,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:03:46,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=71, Unknown=8, NotChecked=0, Total=110 [2021-10-07 16:03:46,021 INFO L87 Difference]: Start difference. First operand 1254 states and 4358 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 16:04:02,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:04:02,240 INFO L93 Difference]: Finished difference Result 802 states and 2552 transitions. [2021-10-07 16:04:02,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:04:02,242 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 16:04:02,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:04:02,250 INFO L225 Difference]: With dead ends: 802 [2021-10-07 16:04:02,250 INFO L226 Difference]: Without dead ends: 802 [2021-10-07 16:04:02,251 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 49597.0ms TimeCoverageRelationStatistics Valid=39, Invalid=85, Unknown=8, NotChecked=0, Total=132 [2021-10-07 16:04:02,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2021-10-07 16:04:02,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 802. [2021-10-07 16:04:02,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 656 states have (on average 3.8902439024390243) internal successors, (2552), 801 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states 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 16:04:02,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 2552 transitions. [2021-10-07 16:04:02,284 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 2552 transitions. Word has length 4 [2021-10-07 16:04:02,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:04:02,284 INFO L470 AbstractCegarLoop]: Abstraction has 802 states and 2552 transitions. [2021-10-07 16:04:02,284 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 16:04:02,285 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 2552 transitions. [2021-10-07 16:04:02,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 16:04:02,285 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:04:02,285 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-07 16:04:02,299 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 16:04:02,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-07 16:04:02,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-07 16:04:02,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 16:04:02,887 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 43 more)] === [2021-10-07 16:04:02,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:04:02,888 INFO L82 PathProgramCache]: Analyzing trace with hash 28040079, now seen corresponding path program 1 times [2021-10-07 16:04:02,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:04:02,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1349625787] [2021-10-07 16:04:02,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:04:02,890 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:04:02,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:04:02,892 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 16:04:02,893 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 16:04:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:04:02,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 16:04:02,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:04:03,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:04:03,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:04:03,305 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:04:03,306 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 16:04:03,475 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 16:04:03,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:04:03,890 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 16:04:03,890 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:04:03,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1349625787] [2021-10-07 16:04:03,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1349625787] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:04:03,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:04:03,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 16:04:03,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617955321] [2021-10-07 16:04:03,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:04:03,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:04:03,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:04:03,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:04:03,892 INFO L87 Difference]: Start difference. First operand 802 states and 2552 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 16:04:13,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:04:13,836 INFO L93 Difference]: Finished difference Result 4759 states and 15226 transitions. [2021-10-07 16:04:13,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 16:04:13,838 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 16:04:13,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:04:13,893 INFO L225 Difference]: With dead ends: 4759 [2021-10-07 16:04:13,893 INFO L226 Difference]: Without dead ends: 4759 [2021-10-07 16:04:13,894 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 852.9ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:04:13,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4759 states. [2021-10-07 16:04:13,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4759 to 814. [2021-10-07 16:04:13,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 668 states have (on average 3.856287425149701) internal successors, (2576), 813 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states 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 16:04:13,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 2576 transitions. [2021-10-07 16:04:13,990 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 2576 transitions. Word has length 4 [2021-10-07 16:04:13,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:04:13,991 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 2576 transitions. [2021-10-07 16:04:13,991 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 16:04:13,991 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 2576 transitions. [2021-10-07 16:04:13,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 16:04:13,992 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:04:13,992 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 16:04:14,007 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 16:04:14,204 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 16:04:14,205 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 43 more)] === [2021-10-07 16:04:14,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:04:14,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1237970793, now seen corresponding path program 1 times [2021-10-07 16:04:14,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:04:14,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889258467] [2021-10-07 16:04:14,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:04:14,209 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:04:14,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:04:14,211 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 16:04:14,216 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 16:04:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:04:14,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 16:04:14,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:04:14,692 INFO L354 Elim1Store]: treesize reduction 239, result has 19.3 percent of original size [2021-10-07 16:04:14,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 88 [2021-10-07 16:04:14,706 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 174 treesize of output 172 [2021-10-07 16:04:16,821 INFO L354 Elim1Store]: treesize reduction 84, result has 36.8 percent of original size [2021-10-07 16:04:16,821 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 16:04:23,649 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:04:23,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889258467] [2021-10-07 16:04:23,650 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-10-07 16:04:23,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1303012871] [2021-10-07 16:04:23,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:04:23,650 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-07 16:04:23,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 [2021-10-07 16:04:23,658 INFO L229 MonitoredProcess]: Starting monitored process 9 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 16:04:23,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-07 16:04:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:04:23,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 16:04:23,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:04:24,221 INFO L354 Elim1Store]: treesize reduction 239, result has 19.3 percent of original size [2021-10-07 16:04:24,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 89 [2021-10-07 16:04:24,228 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 116 treesize of output 114 [2021-10-07 16:04:26,591 INFO L354 Elim1Store]: treesize reduction 84, result has 36.8 percent of original size [2021-10-07 16:04:26,592 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 16:04:38,661 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-10-07 16:04:38,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754713089] [2021-10-07 16:04:38,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:04:38,662 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 16:04:38,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 16:04:38,663 INFO L229 MonitoredProcess]: Starting monitored process 10 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 16:04:38,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-07 16:04:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:04:38,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 16:04:38,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:04:39,069 INFO L354 Elim1Store]: treesize reduction 253, result has 14.5 percent of original size [2021-10-07 16:04:39,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 96 treesize of output 122 [2021-10-07 16:04:39,329 INFO L354 Elim1Store]: treesize reduction 358, result has 15.4 percent of original size [2021-10-07 16:04:39,329 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 8 case distinctions, treesize of input 291 treesize of output 326 [2021-10-07 16:04:43,365 INFO L354 Elim1Store]: treesize reduction 156, result has 16.1 percent of original size [2021-10-07 16:04:43,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 130 treesize of output 146 [2021-10-07 16:04:43,544 INFO L354 Elim1Store]: treesize reduction 144, result has 33.3 percent of original size [2021-10-07 16:04:43,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 134 treesize of output 192 [2021-10-07 16:04:52,781 INFO L354 Elim1Store]: treesize reduction 212, result has 14.2 percent of original size [2021-10-07 16:04:52,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 203 treesize of output 222 [2021-10-07 16:04:53,007 INFO L354 Elim1Store]: treesize reduction 82, result has 51.5 percent of original size [2021-10-07 16:04:53,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 207 treesize of output 279 [2021-10-07 16:07:33,206 WARN L207 SmtUtils]: Spent 52.55 s on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2021-10-07 16:07:34,451 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 16:07:34,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:07:36,901 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 16:07:36,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754713089] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:07:36,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:07:36,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-07 16:07:36,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030657786] [2021-10-07 16:07:36,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:07:36,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:07:36,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:07:36,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=67, Unknown=10, NotChecked=0, Total=110 [2021-10-07 16:07:36,904 INFO L87 Difference]: Start difference. First operand 814 states and 2576 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:51,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:07:51,104 INFO L93 Difference]: Finished difference Result 714 states and 2286 transitions. [2021-10-07 16:07:51,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:07:51,106 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-07 16:07:51,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:07:51,113 INFO L225 Difference]: With dead ends: 714 [2021-10-07 16:07:51,114 INFO L226 Difference]: Without dead ends: 714 [2021-10-07 16:07:51,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 75943.2ms TimeCoverageRelationStatistics Valid=41, Invalid=81, Unknown=10, NotChecked=0, Total=132 [2021-10-07 16:07:51,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2021-10-07 16:07:51,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 714. [2021-10-07 16:07:51,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 616 states have (on average 3.711038961038961) internal successors, (2286), 713 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states 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 16:07:51,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 2286 transitions. [2021-10-07 16:07:51,142 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 2286 transitions. Word has length 6 [2021-10-07 16:07:51,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:07:51,143 INFO L470 AbstractCegarLoop]: Abstraction has 714 states and 2286 transitions. [2021-10-07 16:07:51,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:07:51,143 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 2286 transitions. [2021-10-07 16:07:51,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 16:07:51,144 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:07:51,144 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:07:51,157 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 16:07:51,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-10-07 16:07:51,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-07 16:07:51,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 16:07:51,759 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 43 more)] === [2021-10-07 16:07:51,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:07:51,760 INFO L82 PathProgramCache]: Analyzing trace with hash -277618524, now seen corresponding path program 1 times [2021-10-07 16:07:51,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:07:51,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197285862] [2021-10-07 16:07:51,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:07:51,761 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:07:51,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:07:51,762 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 16:07:51,765 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 16:07:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:07:51,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 16:07:51,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:07:51,991 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 16:07:51,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:07:52,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:07:52,056 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:07:52,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197285862] [2021-10-07 16:07:52,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197285862] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:07:52,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:07:52,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-07 16:07:52,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599159909] [2021-10-07 16:07:52,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:07:52,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:07:52,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:07:52,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:07:52,057 INFO L87 Difference]: Start difference. First operand 714 states and 2286 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 16:07:52,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:07:52,991 INFO L93 Difference]: Finished difference Result 1181 states and 3658 transitions. [2021-10-07 16:07:52,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 16:07:52,992 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 16:07:52,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:07:53,002 INFO L225 Difference]: With dead ends: 1181 [2021-10-07 16:07:53,002 INFO L226 Difference]: Without dead ends: 1181 [2021-10-07 16:07:53,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.2ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:07:53,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2021-10-07 16:07:53,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 941. [2021-10-07 16:07:53,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 843 states have (on average 3.6144721233689205) internal successors, (3047), 940 states have internal predecessors, (3047), 0 states have call successors, (0), 0 states 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 16:07:53,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 3047 transitions. [2021-10-07 16:07:53,060 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 3047 transitions. Word has length 7 [2021-10-07 16:07:53,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:07:53,060 INFO L470 AbstractCegarLoop]: Abstraction has 941 states and 3047 transitions. [2021-10-07 16:07:53,060 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 16:07:53,060 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 3047 transitions. [2021-10-07 16:07:53,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:07:53,061 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:07:53,061 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:07:53,075 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 16:07:53,274 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 16:07:53,276 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 43 more)] === [2021-10-07 16:07:53,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:07:53,277 INFO L82 PathProgramCache]: Analyzing trace with hash -15988120, now seen corresponding path program 1 times [2021-10-07 16:07:53,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:07:53,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121846869] [2021-10-07 16:07:53,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:07:53,278 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:07:53,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:07:53,280 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 16:07:53,281 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 16:07:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:07:53,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 16:07:53,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:07:53,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:07:53,749 INFO L354 Elim1Store]: treesize reduction 325, result has 16.0 percent of original size [2021-10-07 16:07:53,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 196 treesize of output 234 [2021-10-07 16:07:56,534 INFO L354 Elim1Store]: treesize reduction 186, result has 38.4 percent of original size [2021-10-07 16:07:56,535 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 110 treesize of output 210 [2021-10-07 16:08:01,517 INFO L354 Elim1Store]: treesize reduction 242, result has 35.8 percent of original size [2021-10-07 16:08:01,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 154 treesize of output 271 [2021-10-07 16:08:44,236 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 16:08:44,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:08:44,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:08:44,360 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:08:44,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121846869] [2021-10-07 16:08:44,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1121846869] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:08:44,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:08:44,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 5 [2021-10-07 16:08:44,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829633334] [2021-10-07 16:08:44,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 16:08:44,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:08:44,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 16:08:44,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-10-07 16:08:44,364 INFO L87 Difference]: Start difference. First operand 941 states and 3047 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 16:08:46,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:08:46,256 INFO L93 Difference]: Finished difference Result 897 states and 2924 transitions. [2021-10-07 16:08:46,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:08:46,257 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 16:08:46,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:08:46,265 INFO L225 Difference]: With dead ends: 897 [2021-10-07 16:08:46,266 INFO L226 Difference]: Without dead ends: 897 [2021-10-07 16:08:46,266 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 21354.2ms TimeCoverageRelationStatistics Valid=26, Invalid=29, Unknown=1, NotChecked=0, Total=56 [2021-10-07 16:08:46,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2021-10-07 16:08:46,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 897. [2021-10-07 16:08:46,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 815 states have (on average 3.5877300613496934) internal successors, (2924), 896 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states 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 16:08:46,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 2924 transitions. [2021-10-07 16:08:46,303 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 2924 transitions. Word has length 8 [2021-10-07 16:08:46,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:08:46,304 INFO L470 AbstractCegarLoop]: Abstraction has 897 states and 2924 transitions. [2021-10-07 16:08:46,305 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 16:08:46,305 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 2924 transitions. [2021-10-07 16:08:46,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:08:46,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:08:46,306 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:08:46,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-07 16:08:46,519 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 16:08:46,519 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 43 more)] === [2021-10-07 16:08:46,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:08:46,520 INFO L82 PathProgramCache]: Analyzing trace with hash -15988119, now seen corresponding path program 1 times [2021-10-07 16:08:46,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:08:46,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498636738] [2021-10-07 16:08:46,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:08:46,521 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:08:46,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:08:46,522 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 16:08:46,558 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 16:08:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:08:46,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 16:08:46,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:08:46,997 INFO L354 Elim1Store]: treesize reduction 247, result has 16.6 percent of original size [2021-10-07 16:08:46,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 54 treesize of output 86 [2021-10-07 16:08:47,004 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 118 treesize of output 116 [2021-10-07 16:08:47,644 INFO L354 Elim1Store]: treesize reduction 100, result has 24.8 percent of original size [2021-10-07 16:08:47,644 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 46 treesize of output 69 [2021-10-07 16:08:50,417 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:08:50,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [498636738] [2021-10-07 16:08:50,417 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-10-07 16:08:50,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1096019677] [2021-10-07 16:08:50,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:08:50,417 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-07 16:08:50,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 [2021-10-07 16:08:50,419 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 16:08:50,420 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 16:08:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:08:50,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 16:08:50,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:08:51,255 INFO L354 Elim1Store]: treesize reduction 233, result has 21.3 percent of original size [2021-10-07 16:08:51,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 27 treesize of output 73 [2021-10-07 16:08:51,384 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-10-07 16:08:51,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8640912] [2021-10-07 16:08:51,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:08:51,385 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 16:08:51,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 16:08:51,386 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 16:08:51,387 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 16:08:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:08:51,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 16:08:51,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:08:51,894 INFO L354 Elim1Store]: treesize reduction 247, result has 16.6 percent of original size [2021-10-07 16:08:51,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 76 treesize of output 108 [2021-10-07 16:08:52,223 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-07 16:08:52,223 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 165 treesize of output 208 [2021-10-07 16:08:55,778 INFO L354 Elim1Store]: treesize reduction 156, result has 16.1 percent of original size [2021-10-07 16:08:55,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 120 treesize of output 136 [2021-10-07 16:08:55,946 INFO L354 Elim1Store]: treesize reduction 144, result has 33.3 percent of original size [2021-10-07 16:08:55,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 124 treesize of output 182 [2021-10-07 16:09:03,972 INFO L354 Elim1Store]: treesize reduction 212, result has 14.2 percent of original size [2021-10-07 16:09:03,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 190 treesize of output 209 [2021-10-07 16:09:04,188 INFO L354 Elim1Store]: treesize reduction 82, result has 51.5 percent of original size [2021-10-07 16:09:04,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 194 treesize of output 266 [2021-10-07 16:11:41,894 WARN L207 SmtUtils]: Spent 56.78 s on a formula simplification. DAG size of input: 132 DAG size of output: 102 [2021-10-07 16:12:08,716 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 16:12:08,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:12:13,241 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 16:12:13,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8640912] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:12:13,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:12:13,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-07 16:12:13,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279150297] [2021-10-07 16:12:13,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:12:13,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:12:13,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:12:13,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=55, Unknown=6, NotChecked=0, Total=90 [2021-10-07 16:12:13,244 INFO L87 Difference]: Start difference. First operand 897 states and 2924 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:12:27,508 WARN L207 SmtUtils]: Spent 13.97 s on a formula simplification that was a NOOP. DAG size: 148 [2021-10-07 16:12:34,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:12:34,986 INFO L93 Difference]: Finished difference Result 853 states and 2801 transitions. [2021-10-07 16:12:34,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:12:34,988 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 16:12:34,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:12:34,995 INFO L225 Difference]: With dead ends: 853 [2021-10-07 16:12:34,996 INFO L226 Difference]: Without dead ends: 853 [2021-10-07 16:12:34,996 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 83911.0ms TimeCoverageRelationStatistics Valid=37, Invalid=67, Unknown=6, NotChecked=0, Total=110 [2021-10-07 16:12:34,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2021-10-07 16:12:35,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 853. [2021-10-07 16:12:35,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 787 states have (on average 3.5590851334180433) internal successors, (2801), 852 states have internal predecessors, (2801), 0 states have call successors, (0), 0 states 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 16:12:35,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2801 transitions. [2021-10-07 16:12:35,030 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2801 transitions. Word has length 8 [2021-10-07 16:12:35,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:12:35,031 INFO L470 AbstractCegarLoop]: Abstraction has 853 states and 2801 transitions. [2021-10-07 16:12:35,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:12:35,031 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2801 transitions. [2021-10-07 16:12:35,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:12:35,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:12:35,032 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1] [2021-10-07 16:12:35,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-07 16:12:35,272 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 16:12:35,449 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 16:12:35,645 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 16:12:35,646 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 43 more)] === [2021-10-07 16:12:35,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:12:35,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1431660623, now seen corresponding path program 2 times [2021-10-07 16:12:35,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:12:35,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329659343] [2021-10-07 16:12:35,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:12:35,649 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:12:35,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:12:35,650 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 16:12:35,654 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 16:12:35,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:12:35,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:12:35,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 16:12:35,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:12:35,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:12:35,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:12:36,206 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:12:36,206 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 16:12:36,565 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 16:12:36,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:12:38,697 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 16:12:38,697 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:12:38,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329659343] [2021-10-07 16:12:38,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329659343] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:12:38,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:12:38,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:12:38,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035953369] [2021-10-07 16:12:38,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:12:38,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:12:38,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:12:38,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:12:38,699 INFO L87 Difference]: Start difference. First operand 853 states and 2801 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 16:13:12,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:13:12,063 INFO L93 Difference]: Finished difference Result 5426 states and 17762 transitions. [2021-10-07 16:13:12,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 16:13:12,066 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 16:13:12,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:13:12,104 INFO L225 Difference]: With dead ends: 5426 [2021-10-07 16:13:12,104 INFO L226 Difference]: Without dead ends: 5426 [2021-10-07 16:13:12,105 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 6439.2ms TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:13:12,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5426 states. [2021-10-07 16:13:12,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5426 to 867. [2021-10-07 16:13:12,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 801 states have (on average 3.5318352059925093) internal successors, (2829), 866 states have internal predecessors, (2829), 0 states have call successors, (0), 0 states 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 16:13:12,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 2829 transitions. [2021-10-07 16:13:12,203 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 2829 transitions. Word has length 8 [2021-10-07 16:13:12,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:13:12,203 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 2829 transitions. [2021-10-07 16:13:12,203 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 16:13:12,203 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 2829 transitions. [2021-10-07 16:13:12,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 16:13:12,204 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:13:12,204 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:13:12,222 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 16:13:12,417 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 16:13:12,417 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 43 more)] === [2021-10-07 16:13:12,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:13:12,419 INFO L82 PathProgramCache]: Analyzing trace with hash -495639218, now seen corresponding path program 1 times [2021-10-07 16:13:12,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:13:12,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112656184] [2021-10-07 16:13:12,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:13:12,420 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:13:12,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:13:12,421 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 16:13:12,422 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 16:13:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:13:12,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 16:13:12,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:13:12,779 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 16:13:12,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:13:12,855 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 16:13:12,856 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:13:12,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112656184] [2021-10-07 16:13:12,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112656184] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:13:12,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:13:12,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-07 16:13:12,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235532089] [2021-10-07 16:13:12,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:13:12,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:13:12,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:13:12,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:13:12,857 INFO L87 Difference]: Start difference. First operand 867 states and 2829 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 16:13:14,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:13:14,276 INFO L93 Difference]: Finished difference Result 923 states and 2824 transitions. [2021-10-07 16:13:14,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 16:13:14,277 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 16:13:14,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:13:14,281 INFO L225 Difference]: With dead ends: 923 [2021-10-07 16:13:14,282 INFO L226 Difference]: Without dead ends: 923 [2021-10-07 16:13:14,282 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.5ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:13:14,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2021-10-07 16:13:14,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 865. [2021-10-07 16:13:14,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 799 states have (on average 3.4055068836045055) internal successors, (2721), 864 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states 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 16:13:14,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 2721 transitions. [2021-10-07 16:13:14,311 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 2721 transitions. Word has length 9 [2021-10-07 16:13:14,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:13:14,311 INFO L470 AbstractCegarLoop]: Abstraction has 865 states and 2721 transitions. [2021-10-07 16:13:14,311 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 16:13:14,311 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 2721 transitions. [2021-10-07 16:13:14,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 16:13:14,312 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:13:14,312 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:13:14,325 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 16:13:14,525 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 16:13:14,526 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 43 more)] === [2021-10-07 16:13:14,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:13:14,526 INFO L82 PathProgramCache]: Analyzing trace with hash 824625434, now seen corresponding path program 1 times [2021-10-07 16:13:14,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:13:14,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523392512] [2021-10-07 16:13:14,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:13:14,528 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:13:14,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:13:14,529 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 16:13:14,530 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 16:13:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:13:14,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:13:14,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:13:15,208 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-07 16:13:15,209 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 16:13:15,822 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-07 16:13:15,822 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 21 treesize of output 28 [2021-10-07 16:13:15,919 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-10-07 16:13:15,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 52 [2021-10-07 16:13:16,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 16:13:16,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:13:18,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 16:13:18,198 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:13:18,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523392512] [2021-10-07 16:13:18,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523392512] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:13:18,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:13:18,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 16:13:18,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471694572] [2021-10-07 16:13:18,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:13:18,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:13:18,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:13:18,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=18, Unknown=1, NotChecked=0, Total=30 [2021-10-07 16:13:18,200 INFO L87 Difference]: Start difference. First operand 865 states and 2721 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 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 16:13:18,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:13:18,486 INFO L93 Difference]: Finished difference Result 691 states and 2138 transitions. [2021-10-07 16:13:18,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:13:18,488 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 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 16:13:18,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:13:18,491 INFO L225 Difference]: With dead ends: 691 [2021-10-07 16:13:18,491 INFO L226 Difference]: Without dead ends: 691 [2021-10-07 16:13:18,491 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 7 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2180.6ms TimeCoverageRelationStatistics Valid=17, Invalid=24, Unknown=1, NotChecked=0, Total=42 [2021-10-07 16:13:18,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2021-10-07 16:13:18,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2021-10-07 16:13:18,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 652 states have (on average 3.2791411042944785) internal successors, (2138), 690 states have internal predecessors, (2138), 0 states have call successors, (0), 0 states 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 16:13:18,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 2138 transitions. [2021-10-07 16:13:18,514 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 2138 transitions. Word has length 10 [2021-10-07 16:13:18,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:13:18,515 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 2138 transitions. [2021-10-07 16:13:18,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 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 16:13:18,515 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 2138 transitions. [2021-10-07 16:13:18,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 16:13:18,516 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:13:18,516 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:13:18,536 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 16:13:18,729 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 16:13:18,730 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 43 more)] === [2021-10-07 16:13:18,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:13:18,731 INFO L82 PathProgramCache]: Analyzing trace with hash 824625435, now seen corresponding path program 1 times [2021-10-07 16:13:18,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:13:18,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54645039] [2021-10-07 16:13:18,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:13:18,732 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:13:18,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:13:18,734 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 16:13:18,741 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 16:13:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:13:19,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 16:13:19,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:13:19,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:13:19,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:13:19,411 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:13:19,411 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 16:13:19,708 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-07 16:13:19,709 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 16:13:33,673 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-10-07 16:13:33,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 62 [2021-10-07 16:13:33,718 INFO L354 Elim1Store]: treesize reduction -2, result has 108.0 percent of original size [2021-10-07 16:13:33,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 79 [2021-10-07 16:13:34,015 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-10-07 16:13:34,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 43 [2021-10-07 16:13:35,059 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 16:13:35,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:13:35,880 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 16:13:35,880 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:13:35,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54645039] [2021-10-07 16:13:35,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54645039] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:13:35,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:13:35,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 16:13:35,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823445896] [2021-10-07 16:13:35,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 16:13:35,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:13:35,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 16:13:35,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:13:35,882 INFO L87 Difference]: Start difference. First operand 691 states and 2138 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 16:13:54,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:13:54,790 INFO L93 Difference]: Finished difference Result 3609 states and 11491 transitions. [2021-10-07 16:13:54,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 16:13:54,791 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 16:13:54,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:13:54,809 INFO L225 Difference]: With dead ends: 3609 [2021-10-07 16:13:54,810 INFO L226 Difference]: Without dead ends: 3609 [2021-10-07 16:13:54,810 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 11524.7ms TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2021-10-07 16:13:54,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3609 states. [2021-10-07 16:13:54,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3609 to 1085. [2021-10-07 16:13:54,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 1046 states have (on average 3.378585086042065) internal successors, (3534), 1084 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states 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 16:13:54,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 3534 transitions. [2021-10-07 16:13:54,878 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 3534 transitions. Word has length 10 [2021-10-07 16:13:54,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:13:54,879 INFO L470 AbstractCegarLoop]: Abstraction has 1085 states and 3534 transitions. [2021-10-07 16:13:54,879 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 16:13:54,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 3534 transitions. [2021-10-07 16:13:54,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 16:13:54,880 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:13:54,880 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:13:54,898 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 16:13:55,080 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 16:13:55,081 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 43 more)] === [2021-10-07 16:13:55,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:13:55,082 INFO L82 PathProgramCache]: Analyzing trace with hash 439958485, now seen corresponding path program 1 times [2021-10-07 16:13:55,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:13:55,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116283469] [2021-10-07 16:13:55,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:13:55,083 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:13:55,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:13:55,084 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 16:13:55,090 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 16:13:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:13:55,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 16:13:55,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:13:55,415 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 16:13:55,575 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 16:13:55,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:13:56,011 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 16:13:56,011 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:13:56,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116283469] [2021-10-07 16:13:56,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116283469] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:13:56,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:13:56,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-07 16:13:56,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614345994] [2021-10-07 16:13:56,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:13:56,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:13:56,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:13:56,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:13:56,014 INFO L87 Difference]: Start difference. First operand 1085 states and 3534 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:13:56,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:13:56,849 INFO L93 Difference]: Finished difference Result 2319 states and 7872 transitions. [2021-10-07 16:13:56,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 16:13:56,851 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-07 16:13:56,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:13:56,861 INFO L225 Difference]: With dead ends: 2319 [2021-10-07 16:13:56,862 INFO L226 Difference]: Without dead ends: 2319 [2021-10-07 16:13:56,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 429.2ms TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-10-07 16:13:56,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2319 states. [2021-10-07 16:13:56,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2319 to 1309. [2021-10-07 16:13:56,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 1270 states have (on average 4.269291338582677) internal successors, (5422), 1308 states have internal predecessors, (5422), 0 states have call successors, (0), 0 states 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 16:13:56,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 5422 transitions. [2021-10-07 16:13:56,919 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 5422 transitions. Word has length 11 [2021-10-07 16:13:56,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:13:56,919 INFO L470 AbstractCegarLoop]: Abstraction has 1309 states and 5422 transitions. [2021-10-07 16:13:56,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:13:56,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 5422 transitions. [2021-10-07 16:13:56,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 16:13:56,921 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:13:56,921 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:13:56,937 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 16:13:57,134 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 16:13:57,135 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 43 more)] === [2021-10-07 16:13:57,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:13:57,135 INFO L82 PathProgramCache]: Analyzing trace with hash 439958486, now seen corresponding path program 1 times [2021-10-07 16:13:57,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:13:57,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564537776] [2021-10-07 16:13:57,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:13:57,136 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:13:57,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:13:57,137 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 16:13:57,144 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 16:13:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:13:57,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:13:57,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:13:57,465 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 16:13:57,501 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 16:13:57,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:13:57,541 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 16:13:57,542 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:13:57,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564537776] [2021-10-07 16:13:57,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1564537776] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:13:57,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:13:57,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-07 16:13:57,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051514268] [2021-10-07 16:13:57,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:13:57,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:13:57,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:13:57,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:13:57,543 INFO L87 Difference]: Start difference. First operand 1309 states and 5422 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:13:57,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:13:57,759 INFO L93 Difference]: Finished difference Result 1197 states and 4814 transitions. [2021-10-07 16:13:57,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:13:57,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-07 16:13:57,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:13:57,765 INFO L225 Difference]: With dead ends: 1197 [2021-10-07 16:13:57,765 INFO L226 Difference]: Without dead ends: 1197 [2021-10-07 16:13:57,766 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 16:13:57,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2021-10-07 16:13:57,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1197. [2021-10-07 16:13:57,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 1164 states have (on average 4.135738831615121) internal successors, (4814), 1196 states have internal predecessors, (4814), 0 states have call successors, (0), 0 states 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 16:13:57,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 4814 transitions. [2021-10-07 16:13:57,806 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 4814 transitions. Word has length 11 [2021-10-07 16:13:57,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:13:57,807 INFO L470 AbstractCegarLoop]: Abstraction has 1197 states and 4814 transitions. [2021-10-07 16:13:57,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:13:57,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 4814 transitions. [2021-10-07 16:13:57,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 16:13:57,808 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:13:57,808 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:13:57,827 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 16:13:58,023 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 16:13:58,024 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 43 more)] === [2021-10-07 16:13:58,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:13:58,025 INFO L82 PathProgramCache]: Analyzing trace with hash 439958441, now seen corresponding path program 1 times [2021-10-07 16:13:58,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:13:58,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573803753] [2021-10-07 16:13:58,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:13:58,027 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:13:58,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:13:58,028 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 16:13:58,034 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 16:13:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:13:58,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 16:13:58,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:13:58,461 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 16:13:58,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:13:58,534 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 16:13:58,534 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:13:58,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573803753] [2021-10-07 16:13:58,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [573803753] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:13:58,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:13:58,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-07 16:13:58,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553196581] [2021-10-07 16:13:58,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:13:58,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:13:58,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:13:58,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:13:58,536 INFO L87 Difference]: Start difference. First operand 1197 states and 4814 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:13:58,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:13:58,998 INFO L93 Difference]: Finished difference Result 1099 states and 4305 transitions. [2021-10-07 16:13:59,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 16:13:59,000 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-07 16:13:59,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:13:59,004 INFO L225 Difference]: With dead ends: 1099 [2021-10-07 16:13:59,004 INFO L226 Difference]: Without dead ends: 1099 [2021-10-07 16:13:59,005 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.5ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:13:59,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2021-10-07 16:13:59,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 1091. [2021-10-07 16:13:59,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1058 states have (on average 4.062381852551985) internal successors, (4298), 1090 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states 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 16:13:59,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 4298 transitions. [2021-10-07 16:13:59,045 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 4298 transitions. Word has length 11 [2021-10-07 16:13:59,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:13:59,045 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 4298 transitions. [2021-10-07 16:13:59,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:13:59,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 4298 transitions. [2021-10-07 16:13:59,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 16:13:59,046 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:13:59,046 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:13:59,061 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 16:13:59,259 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 16:13:59,260 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 43 more)] === [2021-10-07 16:13:59,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:13:59,260 INFO L82 PathProgramCache]: Analyzing trace with hash -206410581, now seen corresponding path program 1 times [2021-10-07 16:13:59,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:13:59,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1619966155] [2021-10-07 16:13:59,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:13:59,262 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:13:59,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:13:59,263 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 16:13:59,264 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 16:13:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:13:59,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 16:13:59,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:13:59,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 16:13:59,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:13:59,945 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 16:13:59,945 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:13:59,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1619966155] [2021-10-07 16:13:59,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1619966155] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:13:59,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:13:59,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 16:13:59,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398298150] [2021-10-07 16:13:59,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 16:13:59,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:13:59,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 16:13:59,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:13:59,947 INFO L87 Difference]: Start difference. First operand 1091 states and 4298 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:14:01,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:14:01,628 INFO L93 Difference]: Finished difference Result 1929 states and 7616 transitions. [2021-10-07 16:14:01,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 16:14:01,631 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-07 16:14:01,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:14:01,637 INFO L225 Difference]: With dead ends: 1929 [2021-10-07 16:14:01,637 INFO L226 Difference]: Without dead ends: 1929 [2021-10-07 16:14:01,637 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 449.7ms TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:14:01,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1929 states. [2021-10-07 16:14:01,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1929 to 1398. [2021-10-07 16:14:01,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1365 states have (on average 4.166300366300367) internal successors, (5687), 1397 states have internal predecessors, (5687), 0 states have call successors, (0), 0 states 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 16:14:01,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 5687 transitions. [2021-10-07 16:14:01,694 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 5687 transitions. Word has length 11 [2021-10-07 16:14:01,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:14:01,695 INFO L470 AbstractCegarLoop]: Abstraction has 1398 states and 5687 transitions. [2021-10-07 16:14:01,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:14:01,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 5687 transitions. [2021-10-07 16:14:01,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 16:14:01,696 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:14:01,696 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:14:01,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-07 16:14:01,909 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 16:14:01,909 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 43 more)] === [2021-10-07 16:14:01,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:14:01,910 INFO L82 PathProgramCache]: Analyzing trace with hash -2096117692, now seen corresponding path program 1 times [2021-10-07 16:14:01,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:14:01,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1511984530] [2021-10-07 16:14:01,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:14:01,911 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:14:01,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:14:01,913 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 16:14:01,914 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 16:14:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:14:02,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 16:14:02,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:14:02,311 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 16:14:02,345 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-07 16:14:02,346 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 16:14:02,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 16:14:02,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:14:06,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 16:14:06,587 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:14:06,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1511984530] [2021-10-07 16:14:06,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1511984530] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:14:06,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:14:06,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-07 16:14:06,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65581792] [2021-10-07 16:14:06,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:14:06,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:14:06,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:14:06,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=17, Unknown=2, NotChecked=0, Total=30 [2021-10-07 16:14:06,590 INFO L87 Difference]: Start difference. First operand 1398 states and 5687 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:14:06,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:14:06,803 INFO L93 Difference]: Finished difference Result 1062 states and 4094 transitions. [2021-10-07 16:14:06,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:14:06,804 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-07 16:14:06,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:14:06,810 INFO L225 Difference]: With dead ends: 1062 [2021-10-07 16:14:06,810 INFO L226 Difference]: Without dead ends: 1062 [2021-10-07 16:14:06,811 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4068.0ms TimeCoverageRelationStatistics Valid=17, Invalid=23, Unknown=2, NotChecked=0, Total=42 [2021-10-07 16:14:06,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2021-10-07 16:14:06,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 1062. [2021-10-07 16:14:06,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 1043 states have (on average 3.925215723873442) internal successors, (4094), 1061 states have internal predecessors, (4094), 0 states have call successors, (0), 0 states 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 16:14:06,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 4094 transitions. [2021-10-07 16:14:06,870 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 4094 transitions. Word has length 12 [2021-10-07 16:14:06,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:14:06,871 INFO L470 AbstractCegarLoop]: Abstraction has 1062 states and 4094 transitions. [2021-10-07 16:14:06,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:14:06,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 4094 transitions. [2021-10-07 16:14:06,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 16:14:06,872 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:14:06,872 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:14:06,888 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 16:14:07,080 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 16:14:07,081 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 43 more)] === [2021-10-07 16:14:07,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:14:07,082 INFO L82 PathProgramCache]: Analyzing trace with hash -2096117694, now seen corresponding path program 1 times [2021-10-07 16:14:07,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:14:07,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357112600] [2021-10-07 16:14:07,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:14:07,083 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:14:07,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:14:07,084 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 16:14:07,086 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 16:14:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:14:07,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:14:07,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:14:07,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-10-07 16:14:07,557 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 16:14:07,643 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-07 16:14:07,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 41 [2021-10-07 16:14:07,655 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 16:14:07,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 38 [2021-10-07 16:14:08,153 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 16:14:08,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:14:08,652 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 31 treesize of output 29 [2021-10-07 16:14:08,798 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 16:14:08,799 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:14:08,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357112600] [2021-10-07 16:14:08,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357112600] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:14:08,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:14:08,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 16:14:08,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816059426] [2021-10-07 16:14:08,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 16:14:08,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:14:08,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 16:14:08,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:14:08,801 INFO L87 Difference]: Start difference. First operand 1062 states and 4094 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) Received shutdown request... [2021-10-07 16:14:20,938 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 16:14:20,958 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 16:14:21,980 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 16:14:22,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 16:14:22,063 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-07 16:14:22,064 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. [2021-10-07 16:14:22,066 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-07 16:14:22,066 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-07 16:14:22,066 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-07 16:14:22,066 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-07 16:14:22,067 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-07 16:14:22,067 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-07 16:14:22,067 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2REQUIRES_VIOLATION [2021-10-07 16:14:22,067 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3REQUIRES_VIOLATION [2021-10-07 16:14:22,067 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err4REQUIRES_VIOLATION [2021-10-07 16:14:22,068 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err5REQUIRES_VIOLATION [2021-10-07 16:14:22,068 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err6REQUIRES_VIOLATION [2021-10-07 16:14:22,068 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err7REQUIRES_VIOLATION [2021-10-07 16:14:22,068 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 16:14:22,068 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 16:14:22,069 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 16:14:22,069 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 16:14:22,069 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 16:14:22,069 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 16:14:22,069 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 16:14:22,069 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 16:14:22,070 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-07 16:14:22,070 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-07 16:14:22,071 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-07 16:14:22,071 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-07 16:14:22,071 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-07 16:14:22,071 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-07 16:14:22,072 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-07 16:14:22,072 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-07 16:14:22,072 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-07 16:14:22,072 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-07 16:14:22,073 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:14:22,073 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:14:22,073 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 16:14:22,074 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 16:14:22,074 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-07 16:14:22,074 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-07 16:14:22,074 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-07 16:14:22,074 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-07 16:14:22,075 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-07 16:14:22,075 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-07 16:14:22,075 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2REQUIRES_VIOLATION [2021-10-07 16:14:22,075 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3REQUIRES_VIOLATION [2021-10-07 16:14:22,075 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err4REQUIRES_VIOLATION [2021-10-07 16:14:22,076 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err5REQUIRES_VIOLATION [2021-10-07 16:14:22,076 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err6REQUIRES_VIOLATION [2021-10-07 16:14:22,076 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err7REQUIRES_VIOLATION [2021-10-07 16:14:22,102 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 16:14:22,102 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 16:14:22,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 04:14:22 BasicIcfg [2021-10-07 16:14:22,110 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 16:14:22,112 INFO L168 Benchmark]: Toolchain (without parser) took 827387.04 ms. Allocated memory was 165.7 MB in the beginning and 213.9 MB in the end (delta: 48.2 MB). Free memory was 139.3 MB in the beginning and 100.2 MB in the end (delta: 39.1 MB). Peak memory consumption was 88.2 MB. Max. memory is 8.0 GB. [2021-10-07 16:14:22,112 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 165.7 MB. Free memory is still 135.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 16:14:22,113 INFO L168 Benchmark]: CACSL2BoogieTranslator took 513.66 ms. Allocated memory is still 165.7 MB. Free memory was 139.0 MB in the beginning and 125.4 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-07 16:14:22,115 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.22 ms. Allocated memory is still 165.7 MB. Free memory was 125.4 MB in the beginning and 123.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:14:22,115 INFO L168 Benchmark]: Boogie Preprocessor took 51.20 ms. Allocated memory is still 165.7 MB. Free memory was 123.5 MB in the beginning and 121.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:14:22,116 INFO L168 Benchmark]: RCFGBuilder took 1158.69 ms. Allocated memory is still 165.7 MB. Free memory was 121.5 MB in the beginning and 135.5 MB in the end (delta: -14.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-10-07 16:14:22,117 INFO L168 Benchmark]: TraceAbstraction took 825589.44 ms. Allocated memory was 165.7 MB in the beginning and 213.9 MB in the end (delta: 48.2 MB). Free memory was 134.9 MB in the beginning and 100.2 MB in the end (delta: 34.8 MB). Peak memory consumption was 83.0 MB. Max. memory is 8.0 GB. [2021-10-07 16:14:22,123 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 165.7 MB. Free memory is still 135.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 513.66 ms. Allocated memory is still 165.7 MB. Free memory was 139.0 MB in the beginning and 125.4 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 57.22 ms. Allocated memory is still 165.7 MB. Free memory was 125.4 MB in the beginning and 123.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 51.20 ms. Allocated memory is still 165.7 MB. Free memory was 123.5 MB in the beginning and 121.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1158.69 ms. Allocated memory is still 165.7 MB. Free memory was 121.5 MB in the beginning and 135.5 MB in the end (delta: -14.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 825589.44 ms. Allocated memory was 165.7 MB in the beginning and 213.9 MB in the end (delta: 48.2 MB). Free memory was 134.9 MB in the beginning and 100.2 MB in the end (delta: 34.8 MB). Peak memory consumption was 83.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 43134.7ms, 230 PlacesBefore, 67 PlacesAfterwards, 239 TransitionsBefore, 63 TransitionsAfterwards, 3634 CoEnabledTransitionPairs, 7 FixpointIterations, 139 TrivialSequentialCompositions, 76 ConcurrentSequentialCompositions, 29 TrivialYvCompositions, 6 ConcurrentYvCompositions, 13 ChoiceCompositions, 263 TotalNumberOfCompositions, 4970 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4339, positive: 4277, positive conditional: 0, positive unconditional: 4277, negative: 62, negative conditional: 0, negative unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2096, positive: 2065, positive conditional: 0, positive unconditional: 2065, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2096, positive: 2059, positive conditional: 0, positive unconditional: 2059, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 37, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2576, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 2563, negative conditional: 0, negative unconditional: 2563, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4339, positive: 2212, positive conditional: 0, positive unconditional: 2212, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 2096, unknown conditional: 0, unknown unconditional: 2096] , Statistics on independence cache: Total cache size (in pairs): 165, Positive cache size: 160, Positive conditional cache size: 0, Positive unconditional cache size: 160, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 [2021-10-07 16:14:22,139 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - 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 constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - 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 constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - 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 constructing difference of abstraction (1062states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 274 locations, 47 error locations. Started 1 CEGAR loops. OverallTime: 825395.4ms, OverallIterations: 18, TraceHistogramMax: 6, EmptinessCheckTime: 25.8ms, AutomataDifference: 137330.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 43281.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 570 SDtfs, 4388 SDslu, 1666 SDs, 0 SdLazy, 3282 SolverSat, 648 SolverUnsat, 24 SolverUnknown, 0 SolverNotchecked, 86100.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 324 GetRequests, 133 SyntacticMatches, 14 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 267280.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1500occurred in iteration=0, InterpolantAutomatonStates: 116, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 948.7ms AutomataMinimizationTime, 17 MinimizatonAttempts, 14122 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 186.9ms SsaConstructionTime, 1289.6ms SatisfiabilityAnalysisTime, 576173.5ms InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 256 ConstructedInterpolants, 70 QuantifiedInterpolants, 7913 SizeOfPredicates, 121 NumberOfNonLiveVariables, 1684 ConjunctsInSsa, 188 ConjunctsInUnsatCore, 36 InterpolantComputations, 26 PerfectInterpolantSequences, 24/80 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