/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/chl/name-comparator-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 21:01:30,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 21:01:30,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 21:01:30,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 21:01:30,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-06 21:01:30,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-06 21:01:30,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-06 21:01:30,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-06 21:01:30,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-06 21:01:30,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-06 21:01:30,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-06 21:01:30,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-06 21:01:30,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-06 21:01:30,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-06 21:01:30,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-06 21:01:30,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-06 21:01:30,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-06 21:01:30,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 21:01:30,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 21:01:30,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 21:01:30,350 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-06 21:01:30,377 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 21:01:30,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 21:01:30,378 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 21:01:30,379 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 21:01:30,380 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 21:01:30,380 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 21:01:30,380 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 21:01:30,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 21:01:30,381 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 21:01:30,381 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 21:01:30,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 21:01:30,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 21:01:30,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 21:01:30,382 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 21:01:30,382 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 21:01:30,382 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 21:01:30,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 21:01:30,383 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 21:01:30,383 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 21:01:30,383 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 21:01:30,383 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 21:01:30,384 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 21:01:30,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 21:01:30,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 21:01:30,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 21:01:30,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:01:30,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 21:01:30,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 21:01:30,385 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 21:01:30,385 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 21:01:30,386 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 21:01:30,386 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 21:01:30,386 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 21:01:30,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 21:01:30,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 21:01:30,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 21:01:30,761 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 21:01:30,762 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 21:01:30,762 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl/name-comparator-trans.wvr.c [2021-10-06 21:01:30,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8673182a4/49cbf0bb0d1e4308a37297944268d12e/FLAGfe215bc79 [2021-10-06 21:01:31,481 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 21:01:31,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/name-comparator-trans.wvr.c [2021-10-06 21:01:31,494 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8673182a4/49cbf0bb0d1e4308a37297944268d12e/FLAGfe215bc79 [2021-10-06 21:01:31,766 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8673182a4/49cbf0bb0d1e4308a37297944268d12e [2021-10-06 21:01:31,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 21:01:31,785 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 21:01:31,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 21:01:31,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 21:01:31,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 21:01:31,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:01:31" (1/1) ... [2021-10-06 21:01:31,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b213ccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:31, skipping insertion in model container [2021-10-06 21:01:31,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:01:31" (1/1) ... [2021-10-06 21:01:31,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 21:01:31,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:01:32,124 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/name-comparator-trans.wvr.c[5118,5131] [2021-10-06 21:01:32,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:01:32,165 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-06 21:01:32,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:01:32,198 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/name-comparator-trans.wvr.c[5118,5131] [2021-10-06 21:01:32,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:01:32,216 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 21:01:32,256 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/name-comparator-trans.wvr.c[5118,5131] [2021-10-06 21:01:32,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:01:32,279 INFO L208 MainTranslator]: Completed translation [2021-10-06 21:01:32,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:32 WrapperNode [2021-10-06 21:01:32,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 21:01:32,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 21:01:32,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 21:01:32,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 21:01:32,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:32" (1/1) ... [2021-10-06 21:01:32,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:32" (1/1) ... [2021-10-06 21:01:32,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 21:01:32,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 21:01:32,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 21:01:32,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 21:01:32,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:32" (1/1) ... [2021-10-06 21:01:32,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:32" (1/1) ... [2021-10-06 21:01:32,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:32" (1/1) ... [2021-10-06 21:01:32,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:32" (1/1) ... [2021-10-06 21:01:32,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:32" (1/1) ... [2021-10-06 21:01:32,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:32" (1/1) ... [2021-10-06 21:01:32,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:32" (1/1) ... [2021-10-06 21:01:32,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 21:01:32,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 21:01:32,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 21:01:32,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 21:01:32,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:32" (1/1) ... [2021-10-06 21:01:32,516 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:01:32,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 21:01:32,556 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) [2021-10-06 21:01:32,575 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 [2021-10-06 21:01:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 21:01:32,620 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 21:01:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 21:01:32,621 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 21:01:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-06 21:01:32,621 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-06 21:01:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 21:01:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 21:01:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 21:01:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 21:01:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-06 21:01:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 21:01:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 21:01:32,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 21:01:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 21:01:32,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 21:01:32,625 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 21:01:34,627 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 21:01:34,627 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-06 21:01:34,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:01:34 BoogieIcfgContainer [2021-10-06 21:01:34,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 21:01:34,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 21:01:34,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 21:01:34,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 21:01:34,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 09:01:31" (1/3) ... [2021-10-06 21:01:34,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e1bbfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:01:34, skipping insertion in model container [2021-10-06 21:01:34,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:01:32" (2/3) ... [2021-10-06 21:01:34,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e1bbfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:01:34, skipping insertion in model container [2021-10-06 21:01:34,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:01:34" (3/3) ... [2021-10-06 21:01:34,639 INFO L111 eAbstractionObserver]: Analyzing ICFG name-comparator-trans.wvr.c [2021-10-06 21:01:34,645 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 21:01:34,645 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-10-06 21:01:34,646 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 21:01:34,684 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,684 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,684 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,685 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,685 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,685 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,685 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,685 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,686 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,686 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,686 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,686 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,687 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,687 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,687 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,687 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,688 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,688 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,688 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,688 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,688 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,689 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,689 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,689 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,689 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,689 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,690 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,690 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,690 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,690 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,691 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,691 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,691 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,691 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,691 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,691 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,692 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,692 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,692 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,693 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,693 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,693 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,693 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,693 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,694 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,694 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,695 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,695 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,695 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,695 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,695 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,696 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,696 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,696 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,696 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,697 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,697 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,697 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,698 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,698 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,698 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,698 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,699 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,699 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,699 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,699 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,699 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,700 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,700 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,700 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,700 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,700 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,701 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,701 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,701 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,701 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,702 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,702 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,702 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,702 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,702 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,703 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,703 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,703 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,704 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,704 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,704 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,704 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,705 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,705 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,705 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,705 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,706 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,706 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,707 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,707 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,707 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,707 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,708 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,708 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,708 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,708 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,708 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,709 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,709 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,709 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,709 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,710 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,710 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,710 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,710 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,710 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,711 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,711 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,711 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,711 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,711 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,712 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,712 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,712 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,712 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,713 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,713 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,713 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,713 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,713 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,714 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,714 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,714 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,714 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,715 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,715 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,715 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,715 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,716 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,716 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,716 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,716 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,720 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,720 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,720 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,721 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,721 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,721 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,721 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,721 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,722 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,722 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,722 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,722 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,723 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,723 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,725 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,725 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,725 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,726 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,726 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,726 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,726 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,727 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,727 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,727 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,727 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,728 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,728 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,728 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,732 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,732 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,733 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,733 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,733 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,733 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,733 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,734 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,734 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,734 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,734 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,734 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,735 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,735 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:01:34,740 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-06 21:01:34,789 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 21:01:34,799 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 [2021-10-06 21:01:34,799 INFO L340 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2021-10-06 21:01:34,835 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 21:01:34,849 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 182 places, 182 transitions, 388 flow [2021-10-06 21:01:34,857 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 182 places, 182 transitions, 388 flow [2021-10-06 21:01:34,860 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 182 places, 182 transitions, 388 flow [2021-10-06 21:01:34,956 INFO L129 PetriNetUnfolder]: 10/179 cut-off events. [2021-10-06 21:01:34,956 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-06 21:01:34,963 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 179 events. 10/179 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 175 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 135. Up to 2 conditions per place. [2021-10-06 21:01:34,967 INFO L116 LiptonReduction]: Number of co-enabled transitions 2160 [2021-10-06 21:01:59,757 INFO L131 LiptonReduction]: Checked pairs total: 2835 [2021-10-06 21:01:59,758 INFO L133 LiptonReduction]: Total number of compositions: 183 [2021-10-06 21:01:59,771 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 49 transitions, 122 flow [2021-10-06 21:01:59,842 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 750 states, 616 states have (on average 4.165584415584416) internal successors, (2566), 749 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:59,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 750 states, 616 states have (on average 4.165584415584416) internal successors, (2566), 749 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:59,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-06 21:01:59,854 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:59,855 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-06 21:01:59,856 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:01:59,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:59,863 INFO L82 PathProgramCache]: Analyzing trace with hash 36123, now seen corresponding path program 1 times [2021-10-06 21:01:59,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:59,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24406982] [2021-10-06 21:01:59,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:01:59,878 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:59,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:59,884 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) [2021-10-06 21:01:59,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-06 21:01:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:59,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:01:59,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:00,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:00,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:00,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:00,046 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:00,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24406982] [2021-10-06 21:02:00,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24406982] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:00,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:00,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:02:00,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520178400] [2021-10-06 21:02:00,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:02:00,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:00,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:02:00,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:00,078 INFO L87 Difference]: Start difference. First operand has 750 states, 616 states have (on average 4.165584415584416) internal successors, (2566), 749 states have internal predecessors, (2566), 0 states have call successors, (0), 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) [2021-10-06 21:02:00,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:00,319 INFO L93 Difference]: Finished difference Result 753 states and 2571 transitions. [2021-10-06 21:02:00,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:02:00,321 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 [2021-10-06 21:02:00,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:00,351 INFO L225 Difference]: With dead ends: 753 [2021-10-06 21:02:00,351 INFO L226 Difference]: Without dead ends: 753 [2021-10-06 21:02:00,352 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:00,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2021-10-06 21:02:00,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 751. [2021-10-06 21:02:00,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 618 states have (on average 4.160194174757281) internal successors, (2571), 750 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:00,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 2571 transitions. [2021-10-06 21:02:00,500 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 2571 transitions. Word has length 2 [2021-10-06 21:02:00,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:00,500 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 2571 transitions. [2021-10-06 21:02:00,501 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) [2021-10-06 21:02:00,503 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 2571 transitions. [2021-10-06 21:02:00,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-06 21:02:00,503 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:00,503 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-06 21:02:00,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-06 21:02:00,718 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 [2021-10-06 21:02:00,719 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:00,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:00,721 INFO L82 PathProgramCache]: Analyzing trace with hash 36016, now seen corresponding path program 1 times [2021-10-06 21:02:00,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:00,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747542072] [2021-10-06 21:02:00,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:00,723 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:00,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:00,724 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) [2021-10-06 21:02:00,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-06 21:02:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:00,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:02:00,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:01,087 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-06 21:02:01,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-06 21:02:01,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:01,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:01,245 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:01,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747542072] [2021-10-06 21:02:01,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1747542072] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:01,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:01,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:02:01,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074866095] [2021-10-06 21:02:01,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:02:01,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:01,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:02:01,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:01,250 INFO L87 Difference]: Start difference. First operand 751 states and 2571 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:01,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:01,648 INFO L93 Difference]: Finished difference Result 753 states and 2569 transitions. [2021-10-06 21:02:01,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:02:01,650 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 [2021-10-06 21:02:01,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:01,658 INFO L225 Difference]: With dead ends: 753 [2021-10-06 21:02:01,659 INFO L226 Difference]: Without dead ends: 753 [2021-10-06 21:02:01,659 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:01,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2021-10-06 21:02:01,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 751. [2021-10-06 21:02:01,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 618 states have (on average 4.156957928802589) internal successors, (2569), 750 states have internal predecessors, (2569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:01,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 2569 transitions. [2021-10-06 21:02:01,699 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 2569 transitions. Word has length 2 [2021-10-06 21:02:01,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:01,700 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 2569 transitions. [2021-10-06 21:02:01,700 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) [2021-10-06 21:02:01,700 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 2569 transitions. [2021-10-06 21:02:01,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-06 21:02:01,701 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:01,701 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-06 21:02:01,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:01,913 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 [2021-10-06 21:02:01,914 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:01,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:01,916 INFO L82 PathProgramCache]: Analyzing trace with hash 36017, now seen corresponding path program 1 times [2021-10-06 21:02:01,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:01,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690082001] [2021-10-06 21:02:01,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:01,918 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:01,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:01,919 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) [2021-10-06 21:02:01,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-06 21:02:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:01,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:02:01,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:02,238 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-06 21:02:02,239 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 [2021-10-06 21:02:02,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:02,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:02,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:02,902 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:02,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690082001] [2021-10-06 21:02:02,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690082001] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:02,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:02,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:02:02,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748586586] [2021-10-06 21:02:02,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:02:02,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:02,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:02:02,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:02:02,906 INFO L87 Difference]: Start difference. First operand 751 states and 2569 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) [2021-10-06 21:02:03,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:03,032 INFO L93 Difference]: Finished difference Result 750 states and 2566 transitions. [2021-10-06 21:02:03,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:02:03,033 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 [2021-10-06 21:02:03,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:03,041 INFO L225 Difference]: With dead ends: 750 [2021-10-06 21:02:03,041 INFO L226 Difference]: Without dead ends: 750 [2021-10-06 21:02:03,042 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:02:03,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2021-10-06 21:02:03,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 750. [2021-10-06 21:02:03,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 618 states have (on average 4.15210355987055) internal successors, (2566), 749 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:03,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 2566 transitions. [2021-10-06 21:02:03,074 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 2566 transitions. Word has length 2 [2021-10-06 21:02:03,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:03,074 INFO L470 AbstractCegarLoop]: Abstraction has 750 states and 2566 transitions. [2021-10-06 21:02:03,075 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) [2021-10-06 21:02:03,075 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 2566 transitions. [2021-10-06 21:02:03,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-06 21:02:03,075 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:03,076 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-06 21:02:03,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:03,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:03,290 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:03,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:03,291 INFO L82 PathProgramCache]: Analyzing trace with hash 34770011, now seen corresponding path program 1 times [2021-10-06 21:02:03,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:03,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956058873] [2021-10-06 21:02:03,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:03,292 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:03,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:03,293 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:03,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-06 21:02:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:03,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:02:03,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:03,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:03,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:03,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:03,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:03,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956058873] [2021-10-06 21:02:03,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956058873] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:03,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:03,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-06 21:02:03,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335731307] [2021-10-06 21:02:03,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:02:03,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:03,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:02:03,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:02:03,500 INFO L87 Difference]: Start difference. First operand 750 states and 2566 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) [2021-10-06 21:02:03,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:03,633 INFO L93 Difference]: Finished difference Result 752 states and 2568 transitions. [2021-10-06 21:02:03,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:02:03,634 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 [2021-10-06 21:02:03,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:03,642 INFO L225 Difference]: With dead ends: 752 [2021-10-06 21:02:03,642 INFO L226 Difference]: Without dead ends: 752 [2021-10-06 21:02:03,642 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 84.2ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:02:03,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-10-06 21:02:03,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 751. [2021-10-06 21:02:03,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 619 states have (on average 4.148626817447496) internal successors, (2568), 750 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:03,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 2568 transitions. [2021-10-06 21:02:03,674 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 2568 transitions. Word has length 4 [2021-10-06 21:02:03,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:03,674 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 2568 transitions. [2021-10-06 21:02:03,675 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) [2021-10-06 21:02:03,675 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 2568 transitions. [2021-10-06 21:02:03,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-06 21:02:03,675 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:03,676 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-06 21:02:03,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:03,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:03,890 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:03,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:03,893 INFO L82 PathProgramCache]: Analyzing trace with hash 34769904, now seen corresponding path program 1 times [2021-10-06 21:02:03,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:03,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778451672] [2021-10-06 21:02:03,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:03,895 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:03,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:03,896 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:03,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-06 21:02:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:03,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:02:03,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:04,229 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-06 21:02:04,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-06 21:02:04,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:04,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:04,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:04,728 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:04,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778451672] [2021-10-06 21:02:04,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778451672] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:04,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:04,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-06 21:02:04,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778497186] [2021-10-06 21:02:04,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:02:04,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:04,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:02:04,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:02:04,734 INFO L87 Difference]: Start difference. First operand 751 states and 2568 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) [2021-10-06 21:02:05,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:05,303 INFO L93 Difference]: Finished difference Result 751 states and 2567 transitions. [2021-10-06 21:02:05,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 21:02:05,305 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 [2021-10-06 21:02:05,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:05,312 INFO L225 Difference]: With dead ends: 751 [2021-10-06 21:02:05,313 INFO L226 Difference]: Without dead ends: 751 [2021-10-06 21:02:05,313 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 325.7ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:02:05,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2021-10-06 21:02:05,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 751. [2021-10-06 21:02:05,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 619 states have (on average 4.147011308562197) internal successors, (2567), 750 states have internal predecessors, (2567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:05,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 2567 transitions. [2021-10-06 21:02:05,365 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 2567 transitions. Word has length 4 [2021-10-06 21:02:05,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:05,365 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 2567 transitions. [2021-10-06 21:02:05,365 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) [2021-10-06 21:02:05,366 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 2567 transitions. [2021-10-06 21:02:05,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:02:05,366 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:05,366 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1] [2021-10-06 21:02:05,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-06 21:02:05,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:05,583 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:05,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:05,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1077872085, now seen corresponding path program 2 times [2021-10-06 21:02:05,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:05,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169227820] [2021-10-06 21:02:05,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:02:05,586 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:05,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:05,587 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) [2021-10-06 21:02:05,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-06 21:02:05,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:02:05,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:05,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:02:05,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:05,894 INFO L354 Elim1Store]: treesize reduction 358, result has 15.4 percent of original size [2021-10-06 21:02:05,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 9 case distinctions, treesize of input 328 treesize of output 355 [2021-10-06 21:02:15,948 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:15,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:15,970 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:15,971 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:15,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169227820] [2021-10-06 21:02:15,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169227820] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:15,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:15,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:02:15,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93304177] [2021-10-06 21:02:15,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:02:15,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:15,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:02:15,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:15,974 INFO L87 Difference]: Start difference. First operand 751 states and 2567 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:16,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:16,189 INFO L93 Difference]: Finished difference Result 625 states and 2066 transitions. [2021-10-06 21:02:16,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:02:16,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 21:02:16,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:16,198 INFO L225 Difference]: With dead ends: 625 [2021-10-06 21:02:16,198 INFO L226 Difference]: Without dead ends: 625 [2021-10-06 21:02:16,198 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:16,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-10-06 21:02:16,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 625. [2021-10-06 21:02:16,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 521 states have (on average 3.965451055662188) internal successors, (2066), 624 states have internal predecessors, (2066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:16,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 2066 transitions. [2021-10-06 21:02:16,226 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 2066 transitions. Word has length 5 [2021-10-06 21:02:16,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:16,227 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 2066 transitions. [2021-10-06 21:02:16,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:16,228 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 2066 transitions. [2021-10-06 21:02:16,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:02:16,228 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:16,229 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1] [2021-10-06 21:02:16,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:16,441 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 [2021-10-06 21:02:16,441 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:16,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:16,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1077872087, now seen corresponding path program 1 times [2021-10-06 21:02:16,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:16,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163794419] [2021-10-06 21:02:16,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:16,443 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:16,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:16,444 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) [2021-10-06 21:02:16,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-06 21:02:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:16,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:02:16,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:16,844 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-06 21:02:16,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 61 treesize of output 99 [2021-10-06 21:02:16,854 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-06 21:02:16,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 186 treesize of output 182 [2021-10-06 21:02:20,452 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:20,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:20,515 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:20,516 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:20,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163794419] [2021-10-06 21:02:20,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163794419] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:20,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:20,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:02:20,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654405329] [2021-10-06 21:02:20,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:02:20,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:20,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:02:20,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:20,518 INFO L87 Difference]: Start difference. First operand 625 states and 2066 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:20,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:20,698 INFO L93 Difference]: Finished difference Result 499 states and 1565 transitions. [2021-10-06 21:02:20,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:02:20,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 21:02:20,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:20,704 INFO L225 Difference]: With dead ends: 499 [2021-10-06 21:02:20,705 INFO L226 Difference]: Without dead ends: 499 [2021-10-06 21:02:20,705 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:20,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-10-06 21:02:20,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 499. [2021-10-06 21:02:20,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 423 states have (on average 3.699763593380615) internal successors, (1565), 498 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:20,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 1565 transitions. [2021-10-06 21:02:20,726 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 1565 transitions. Word has length 5 [2021-10-06 21:02:20,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:20,727 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 1565 transitions. [2021-10-06 21:02:20,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:20,727 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 1565 transitions. [2021-10-06 21:02:20,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:02:20,727 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:20,728 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1] [2021-10-06 21:02:20,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:20,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:20,944 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:20,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:20,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1077871978, now seen corresponding path program 2 times [2021-10-06 21:02:20,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:20,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17539065] [2021-10-06 21:02:20,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:02:20,946 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:20,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:20,947 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:20,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-06 21:02:21,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:02:21,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:21,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:02:21,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:21,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-06 21:02:21,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-06 21:02:21,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-06 21:02:21,265 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-06 21:02:21,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 [2021-10-06 21:02:21,400 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:21,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:21,890 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:21,890 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:21,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17539065] [2021-10-06 21:02:21,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17539065] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:21,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:21,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-06 21:02:21,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829342649] [2021-10-06 21:02:21,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:02:21,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:21,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:02:21,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:02:21,893 INFO L87 Difference]: Start difference. First operand 499 states and 1565 transitions. Second operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:22,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:22,114 INFO L93 Difference]: Finished difference Result 498 states and 1563 transitions. [2021-10-06 21:02:22,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:02:22,115 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 21:02:22,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:22,120 INFO L225 Difference]: With dead ends: 498 [2021-10-06 21:02:22,120 INFO L226 Difference]: Without dead ends: 498 [2021-10-06 21:02:22,120 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 410.3ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:02:22,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2021-10-06 21:02:22,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 498. [2021-10-06 21:02:22,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 423 states have (on average 3.6950354609929077) internal successors, (1563), 497 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:22,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1563 transitions. [2021-10-06 21:02:22,139 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1563 transitions. Word has length 5 [2021-10-06 21:02:22,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:22,139 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 1563 transitions. [2021-10-06 21:02:22,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:22,139 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1563 transitions. [2021-10-06 21:02:22,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:02:22,140 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:22,140 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2021-10-06 21:02:22,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:22,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:22,352 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:22,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:22,353 INFO L82 PathProgramCache]: Analyzing trace with hash 747985577, now seen corresponding path program 1 times [2021-10-06 21:02:22,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:22,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [923372955] [2021-10-06 21:02:22,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:22,356 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:22,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:22,357 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:22,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-06 21:02:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:22,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:02:22,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:22,676 INFO L354 Elim1Store]: treesize reduction 225, result has 21.3 percent of original size [2021-10-06 21:02:22,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 86 [2021-10-06 21:02:22,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 111 [2021-10-06 21:02:28,496 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:28,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:28,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:28,578 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:28,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [923372955] [2021-10-06 21:02:28,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [923372955] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:28,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:28,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:02:28,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765477989] [2021-10-06 21:02:28,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:02:28,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:28,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:02:28,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:28,581 INFO L87 Difference]: Start difference. First operand 498 states and 1563 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:28,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:28,702 INFO L93 Difference]: Finished difference Result 468 states and 1478 transitions. [2021-10-06 21:02:28,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:02:28,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-06 21:02:28,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:28,708 INFO L225 Difference]: With dead ends: 468 [2021-10-06 21:02:28,708 INFO L226 Difference]: Without dead ends: 468 [2021-10-06 21:02:28,709 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:28,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-10-06 21:02:28,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 468. [2021-10-06 21:02:28,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 405 states have (on average 3.6493827160493826) internal successors, (1478), 467 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:28,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1478 transitions. [2021-10-06 21:02:28,728 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1478 transitions. Word has length 7 [2021-10-06 21:02:28,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:28,728 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 1478 transitions. [2021-10-06 21:02:28,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:28,728 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1478 transitions. [2021-10-06 21:02:28,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:02:28,729 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:28,729 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2021-10-06 21:02:28,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:28,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:28,948 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:28,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:28,948 INFO L82 PathProgramCache]: Analyzing trace with hash 747985575, now seen corresponding path program 1 times [2021-10-06 21:02:28,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:28,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [747109083] [2021-10-06 21:02:28,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:28,949 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:28,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:28,950 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) [2021-10-06 21:02:28,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-06 21:02:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:29,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:02:29,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:29,287 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-06 21:02:29,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 101 treesize of output 142 [2021-10-06 21:02:36,872 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:36,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:36,900 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:36,900 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:36,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [747109083] [2021-10-06 21:02:36,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [747109083] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:36,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:36,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:02:36,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190437146] [2021-10-06 21:02:36,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:02:36,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:36,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:02:36,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:36,903 INFO L87 Difference]: Start difference. First operand 468 states and 1478 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:37,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:37,011 INFO L93 Difference]: Finished difference Result 438 states and 1393 transitions. [2021-10-06 21:02:37,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:02:37,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-06 21:02:37,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:37,017 INFO L225 Difference]: With dead ends: 438 [2021-10-06 21:02:37,017 INFO L226 Difference]: Without dead ends: 438 [2021-10-06 21:02:37,017 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:37,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-10-06 21:02:37,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2021-10-06 21:02:37,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 387 states have (on average 3.599483204134367) internal successors, (1393), 437 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:37,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1393 transitions. [2021-10-06 21:02:37,034 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1393 transitions. Word has length 7 [2021-10-06 21:02:37,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:37,034 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 1393 transitions. [2021-10-06 21:02:37,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:37,034 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1393 transitions. [2021-10-06 21:02:37,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-06 21:02:37,035 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:37,035 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2021-10-06 21:02:37,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-10-06 21:02:37,247 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 [2021-10-06 21:02:37,247 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:37,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:37,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1712711748, now seen corresponding path program 1 times [2021-10-06 21:02:37,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:37,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143778125] [2021-10-06 21:02:37,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:37,252 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:37,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:37,253 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) [2021-10-06 21:02:37,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-06 21:02:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:37,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:02:37,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:37,620 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-06 21:02:37,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-06 21:02:37,724 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:37,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:37,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:37,910 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:37,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143778125] [2021-10-06 21:02:37,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143778125] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:37,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:37,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-06 21:02:37,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258639608] [2021-10-06 21:02:37,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:02:37,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:37,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:02:37,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:02:37,913 INFO L87 Difference]: Start difference. First operand 438 states and 1393 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) [2021-10-06 21:02:38,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:38,330 INFO L93 Difference]: Finished difference Result 1014 states and 3211 transitions. [2021-10-06 21:02:38,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:02:38,332 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 8 [2021-10-06 21:02:38,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:38,342 INFO L225 Difference]: With dead ends: 1014 [2021-10-06 21:02:38,343 INFO L226 Difference]: Without dead ends: 1014 [2021-10-06 21:02:38,343 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 192.6ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:02:38,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2021-10-06 21:02:38,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 582. [2021-10-06 21:02:38,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 531 states have (on average 4.065913370998117) internal successors, (2159), 581 states have internal predecessors, (2159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:38,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 2159 transitions. [2021-10-06 21:02:38,376 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 2159 transitions. Word has length 8 [2021-10-06 21:02:38,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:38,377 INFO L470 AbstractCegarLoop]: Abstraction has 582 states and 2159 transitions. [2021-10-06 21:02:38,377 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) [2021-10-06 21:02:38,377 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 2159 transitions. [2021-10-06 21:02:38,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-06 21:02:38,378 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:38,378 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2021-10-06 21:02:38,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:38,592 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 [2021-10-06 21:02:38,592 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:38,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:38,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1712711749, now seen corresponding path program 1 times [2021-10-06 21:02:38,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:38,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [805514823] [2021-10-06 21:02:38,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:38,595 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:38,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:38,596 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) [2021-10-06 21:02:38,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-06 21:02:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:38,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:02:38,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:38,908 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-06 21:02:38,908 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 [2021-10-06 21:02:39,385 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:39,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:39,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:39,411 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:39,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [805514823] [2021-10-06 21:02:39,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [805514823] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:39,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:39,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-06 21:02:39,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941388462] [2021-10-06 21:02:39,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:02:39,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:39,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:02:39,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:39,413 INFO L87 Difference]: Start difference. First operand 582 states and 2159 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:39,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:39,524 INFO L93 Difference]: Finished difference Result 356 states and 1220 transitions. [2021-10-06 21:02:39,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:02:39,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-06 21:02:39,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:39,528 INFO L225 Difference]: With dead ends: 356 [2021-10-06 21:02:39,529 INFO L226 Difference]: Without dead ends: 356 [2021-10-06 21:02:39,529 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:02:39,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-10-06 21:02:39,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2021-10-06 21:02:39,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 336 states have (on average 3.630952380952381) internal successors, (1220), 355 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:39,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 1220 transitions. [2021-10-06 21:02:39,542 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 1220 transitions. Word has length 8 [2021-10-06 21:02:39,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:39,543 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 1220 transitions. [2021-10-06 21:02:39,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:39,543 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 1220 transitions. [2021-10-06 21:02:39,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 21:02:39,543 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:39,544 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:39,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:39,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:39,756 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:39,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:39,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1554629510, now seen corresponding path program 1 times [2021-10-06 21:02:39,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:39,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121064813] [2021-10-06 21:02:39,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:39,759 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:39,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:39,760 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:39,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-06 21:02:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:39,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:02:39,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:40,159 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-06 21:02:40,159 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 [2021-10-06 21:02:40,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:40,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:40,696 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:40,697 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:40,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121064813] [2021-10-06 21:02:40,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121064813] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:40,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:40,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:02:40,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728552497] [2021-10-06 21:02:40,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:02:40,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:40,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:02:40,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:02:40,699 INFO L87 Difference]: Start difference. First operand 356 states and 1220 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:40,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:40,782 INFO L93 Difference]: Finished difference Result 328 states and 1132 transitions. [2021-10-06 21:02:40,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:02:40,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-06 21:02:40,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:40,787 INFO L225 Difference]: With dead ends: 328 [2021-10-06 21:02:40,787 INFO L226 Difference]: Without dead ends: 328 [2021-10-06 21:02:40,787 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:02:40,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-10-06 21:02:40,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2021-10-06 21:02:40,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 314 states have (on average 3.605095541401274) internal successors, (1132), 327 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:40,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 1132 transitions. [2021-10-06 21:02:40,799 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 1132 transitions. Word has length 9 [2021-10-06 21:02:40,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:40,799 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 1132 transitions. [2021-10-06 21:02:40,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:40,799 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 1132 transitions. [2021-10-06 21:02:40,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 21:02:40,800 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:40,800 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:40,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:41,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:41,017 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:41,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:41,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1554629508, now seen corresponding path program 1 times [2021-10-06 21:02:41,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:41,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474840108] [2021-10-06 21:02:41,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:41,019 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:41,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:41,021 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:41,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-06 21:02:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:41,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:02:41,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:41,371 INFO L354 Elim1Store]: treesize reduction 247, result has 16.6 percent of original size [2021-10-06 21:02:41,372 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 52 treesize of output 84 [2021-10-06 21:02:41,392 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 395 treesize of output 387 [2021-10-06 21:02:42,451 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:42,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:42,547 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:42,548 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:42,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474840108] [2021-10-06 21:02:42,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [474840108] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:42,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:42,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:02:42,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992743463] [2021-10-06 21:02:42,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:02:42,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:42,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:02:42,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:42,550 INFO L87 Difference]: Start difference. First operand 328 states and 1132 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:42,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:42,655 INFO L93 Difference]: Finished difference Result 300 states and 1044 transitions. [2021-10-06 21:02:42,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:02:42,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-06 21:02:42,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:42,658 INFO L225 Difference]: With dead ends: 300 [2021-10-06 21:02:42,658 INFO L226 Difference]: Without dead ends: 300 [2021-10-06 21:02:42,659 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 71.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:02:42,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-10-06 21:02:42,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2021-10-06 21:02:42,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 292 states have (on average 3.5753424657534247) internal successors, (1044), 299 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:42,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 1044 transitions. [2021-10-06 21:02:42,669 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 1044 transitions. Word has length 9 [2021-10-06 21:02:42,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:42,669 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 1044 transitions. [2021-10-06 21:02:42,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:42,670 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 1044 transitions. [2021-10-06 21:02:42,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-06 21:02:42,670 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:42,671 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:42,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:42,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:42,884 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:42,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:42,885 INFO L82 PathProgramCache]: Analyzing trace with hash 948869771, now seen corresponding path program 1 times [2021-10-06 21:02:42,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:42,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710194822] [2021-10-06 21:02:42,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:42,887 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:42,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:42,887 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) [2021-10-06 21:02:42,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-06 21:02:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:43,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:02:43,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:43,273 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-06 21:02:43,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-06 21:02:43,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:43,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:43,614 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:43,615 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:43,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710194822] [2021-10-06 21:02:43,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710194822] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:43,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:43,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-06 21:02:43,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568026442] [2021-10-06 21:02:43,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:02:43,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:43,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:02:43,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:02:43,617 INFO L87 Difference]: Start difference. First operand 300 states and 1044 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) [2021-10-06 21:02:43,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:43,913 INFO L93 Difference]: Finished difference Result 592 states and 2072 transitions. [2021-10-06 21:02:43,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:02:43,914 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 10 [2021-10-06 21:02:43,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:43,919 INFO L225 Difference]: With dead ends: 592 [2021-10-06 21:02:43,919 INFO L226 Difference]: Without dead ends: 592 [2021-10-06 21:02:43,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 208.4ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:02:43,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-10-06 21:02:43,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 436. [2021-10-06 21:02:43,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 428 states have (on average 3.9158878504672896) internal successors, (1676), 435 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:43,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1676 transitions. [2021-10-06 21:02:43,935 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1676 transitions. Word has length 10 [2021-10-06 21:02:43,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:43,936 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 1676 transitions. [2021-10-06 21:02:43,936 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) [2021-10-06 21:02:43,936 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1676 transitions. [2021-10-06 21:02:43,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-06 21:02:43,937 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:43,937 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2021-10-06 21:02:43,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:44,149 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 [2021-10-06 21:02:44,149 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:44,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:44,150 INFO L82 PathProgramCache]: Analyzing trace with hash 943547908, now seen corresponding path program 1 times [2021-10-06 21:02:44,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:44,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1319905352] [2021-10-06 21:02:44,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:44,152 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:44,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:44,153 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) [2021-10-06 21:02:44,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-06 21:02:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:44,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:02:44,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:44,550 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-06 21:02:44,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-06 21:02:44,697 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:44,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:45,162 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:45,163 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:45,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1319905352] [2021-10-06 21:02:45,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1319905352] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:45,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:45,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:02:45,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311162627] [2021-10-06 21:02:45,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:02:45,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:45,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:02:45,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:02:45,166 INFO L87 Difference]: Start difference. First operand 436 states and 1676 transitions. Second operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 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) [2021-10-06 21:02:45,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:45,740 INFO L93 Difference]: Finished difference Result 858 states and 2998 transitions. [2021-10-06 21:02:45,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:02:45,741 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-06 21:02:45,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:45,748 INFO L225 Difference]: With dead ends: 858 [2021-10-06 21:02:45,748 INFO L226 Difference]: Without dead ends: 858 [2021-10-06 21:02:45,749 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 467.4ms TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:02:45,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2021-10-06 21:02:45,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 498. [2021-10-06 21:02:45,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 490 states have (on average 4.012244897959183) internal successors, (1966), 497 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:45,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1966 transitions. [2021-10-06 21:02:45,770 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1966 transitions. Word has length 10 [2021-10-06 21:02:45,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:45,770 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 1966 transitions. [2021-10-06 21:02:45,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 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) [2021-10-06 21:02:45,771 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1966 transitions. [2021-10-06 21:02:45,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-06 21:02:45,772 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:45,772 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2021-10-06 21:02:45,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:45,985 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 [2021-10-06 21:02:45,985 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:45,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:45,986 INFO L82 PathProgramCache]: Analyzing trace with hash -814784910, now seen corresponding path program 2 times [2021-10-06 21:02:45,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:45,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309808748] [2021-10-06 21:02:45,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:02:45,987 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:45,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:45,988 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) [2021-10-06 21:02:45,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-06 21:02:46,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:02:46,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:46,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:02:46,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:46,247 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:46,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:46,323 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:46,324 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:46,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309808748] [2021-10-06 21:02:46,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309808748] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:46,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:46,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-06 21:02:46,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952121432] [2021-10-06 21:02:46,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:02:46,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:46,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:02:46,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:02:46,326 INFO L87 Difference]: Start difference. First operand 498 states and 1966 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:46,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:46,445 INFO L93 Difference]: Finished difference Result 796 states and 2708 transitions. [2021-10-06 21:02:46,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:02:46,446 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-06 21:02:46,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:46,452 INFO L225 Difference]: With dead ends: 796 [2021-10-06 21:02:46,453 INFO L226 Difference]: Without dead ends: 796 [2021-10-06 21:02:46,453 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.0ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:02:46,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2021-10-06 21:02:46,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 436. [2021-10-06 21:02:46,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 432 states have (on average 3.8796296296296298) internal successors, (1676), 435 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:46,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1676 transitions. [2021-10-06 21:02:46,473 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1676 transitions. Word has length 11 [2021-10-06 21:02:46,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:46,473 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 1676 transitions. [2021-10-06 21:02:46,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:46,473 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1676 transitions. [2021-10-06 21:02:46,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-06 21:02:46,474 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:46,474 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:46,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-10-06 21:02:46,686 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 [2021-10-06 21:02:46,687 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:46,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:46,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1330814635, now seen corresponding path program 1 times [2021-10-06 21:02:46,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:46,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1439852636] [2021-10-06 21:02:46,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:46,690 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:46,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:46,691 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) [2021-10-06 21:02:46,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-06 21:02:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:46,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:02:46,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:47,089 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-06 21:02:47,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-06 21:02:47,254 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:47,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:47,709 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:47,710 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:47,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1439852636] [2021-10-06 21:02:47,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1439852636] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:47,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:47,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:02:47,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105248242] [2021-10-06 21:02:47,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:02:47,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:47,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:02:47,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:02:47,712 INFO L87 Difference]: Start difference. First operand 436 states and 1676 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) [2021-10-06 21:02:48,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:48,253 INFO L93 Difference]: Finished difference Result 738 states and 2586 transitions. [2021-10-06 21:02:48,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:02:48,254 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 12 [2021-10-06 21:02:48,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:48,260 INFO L225 Difference]: With dead ends: 738 [2021-10-06 21:02:48,260 INFO L226 Difference]: Without dead ends: 738 [2021-10-06 21:02:48,261 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 440.7ms TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:02:48,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2021-10-06 21:02:48,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 504. [2021-10-06 21:02:48,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 500 states have (on average 3.984) internal successors, (1992), 503 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:48,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1992 transitions. [2021-10-06 21:02:48,282 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1992 transitions. Word has length 12 [2021-10-06 21:02:48,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:48,283 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 1992 transitions. [2021-10-06 21:02:48,283 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) [2021-10-06 21:02:48,283 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1992 transitions. [2021-10-06 21:02:48,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-06 21:02:48,287 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:48,287 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:48,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:48,500 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 [2021-10-06 21:02:48,501 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:48,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:48,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1336255120, now seen corresponding path program 1 times [2021-10-06 21:02:48,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:48,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259680540] [2021-10-06 21:02:48,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:48,503 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:48,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:48,504 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) [2021-10-06 21:02:48,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-06 21:02:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:48,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:02:48,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:48,903 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-06 21:02:48,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-06 21:02:49,040 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:49,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:49,279 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:49,280 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:49,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259680540] [2021-10-06 21:02:49,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259680540] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:49,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:49,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-06 21:02:49,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483888327] [2021-10-06 21:02:49,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:02:49,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:49,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:02:49,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:02:49,282 INFO L87 Difference]: Start difference. First operand 504 states and 1992 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:49,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:49,643 INFO L93 Difference]: Finished difference Result 908 states and 3636 transitions. [2021-10-06 21:02:49,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:02:49,644 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-06 21:02:49,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:49,653 INFO L225 Difference]: With dead ends: 908 [2021-10-06 21:02:49,653 INFO L226 Difference]: Without dead ends: 908 [2021-10-06 21:02:49,653 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 201.2ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:02:49,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-10-06 21:02:49,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 704. [2021-10-06 21:02:49,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 700 states have (on average 4.3028571428571425) internal successors, (3012), 703 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:49,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 3012 transitions. [2021-10-06 21:02:49,680 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 3012 transitions. Word has length 12 [2021-10-06 21:02:49,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:49,681 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 3012 transitions. [2021-10-06 21:02:49,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:49,681 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 3012 transitions. [2021-10-06 21:02:49,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 21:02:49,682 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:49,682 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:49,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:49,895 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 [2021-10-06 21:02:49,895 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:49,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:49,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1694418292, now seen corresponding path program 2 times [2021-10-06 21:02:49,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:49,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272956310] [2021-10-06 21:02:49,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:02:49,898 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:49,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:49,899 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) [2021-10-06 21:02:49,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-06 21:02:50,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:02:50,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:50,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 21:02:50,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:50,364 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-06 21:02:50,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-06 21:02:50,579 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:50,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:51,098 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:51,098 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:51,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272956310] [2021-10-06 21:02:51,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [272956310] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:51,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:51,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2021-10-06 21:02:51,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219006317] [2021-10-06 21:02:51,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:02:51,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:51,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:02:51,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:02:51,101 INFO L87 Difference]: Start difference. First operand 704 states and 3012 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:51,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:51,785 INFO L93 Difference]: Finished difference Result 938 states and 3478 transitions. [2021-10-06 21:02:51,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 21:02:51,786 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 21:02:51,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:51,793 INFO L225 Difference]: With dead ends: 938 [2021-10-06 21:02:51,793 INFO L226 Difference]: Without dead ends: 938 [2021-10-06 21:02:51,794 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 538.7ms TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:02:51,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2021-10-06 21:02:51,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 608. [2021-10-06 21:02:51,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 606 states have (on average 4.184818481848184) internal successors, (2536), 607 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:51,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 2536 transitions. [2021-10-06 21:02:51,819 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 2536 transitions. Word has length 13 [2021-10-06 21:02:51,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:51,819 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 2536 transitions. [2021-10-06 21:02:51,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:51,820 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 2536 transitions. [2021-10-06 21:02:51,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 21:02:51,821 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:51,821 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:51,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:52,034 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 [2021-10-06 21:02:52,035 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:52,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:52,036 INFO L82 PathProgramCache]: Analyzing trace with hash -54017232, now seen corresponding path program 1 times [2021-10-06 21:02:52,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:52,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116742054] [2021-10-06 21:02:52,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:52,038 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:52,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:52,039 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) [2021-10-06 21:02:52,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-06 21:02:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:52,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:02:52,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:52,466 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-06 21:02:52,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-06 21:02:52,634 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:52,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:53,178 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:53,179 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:53,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116742054] [2021-10-06 21:02:53,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116742054] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:53,179 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:53,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-06 21:02:53,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714581604] [2021-10-06 21:02:53,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:02:53,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:53,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:02:53,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:02:53,185 INFO L87 Difference]: Start difference. First operand 608 states and 2536 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:53,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:53,591 INFO L93 Difference]: Finished difference Result 958 states and 3746 transitions. [2021-10-06 21:02:53,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:02:53,592 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 21:02:53,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:53,597 INFO L225 Difference]: With dead ends: 958 [2021-10-06 21:02:53,598 INFO L226 Difference]: Without dead ends: 958 [2021-10-06 21:02:53,598 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 489.0ms TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:02:53,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2021-10-06 21:02:53,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 694. [2021-10-06 21:02:53,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 692 states have (on average 4.286127167630058) internal successors, (2966), 693 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:53,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 2966 transitions. [2021-10-06 21:02:53,622 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 2966 transitions. Word has length 14 [2021-10-06 21:02:53,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:53,623 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 2966 transitions. [2021-10-06 21:02:53,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:53,623 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 2966 transitions. [2021-10-06 21:02:53,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:02:53,624 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:53,624 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:53,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-10-06 21:02:53,836 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 [2021-10-06 21:02:53,837 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:53,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:53,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1674533131, now seen corresponding path program 2 times [2021-10-06 21:02:53,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:53,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [945413521] [2021-10-06 21:02:53,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:02:53,839 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:53,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:53,840 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) [2021-10-06 21:02:53,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-06 21:02:54,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:02:54,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:54,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:02:54,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:54,148 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:54,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:54,229 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:54,229 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:54,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [945413521] [2021-10-06 21:02:54,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [945413521] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:54,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:54,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-06 21:02:54,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20497260] [2021-10-06 21:02:54,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:02:54,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:54,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:02:54,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:02:54,231 INFO L87 Difference]: Start difference. First operand 694 states and 2966 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:54,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:54,384 INFO L93 Difference]: Finished difference Result 872 states and 3316 transitions. [2021-10-06 21:02:54,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:02:54,390 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 21:02:54,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:54,413 INFO L225 Difference]: With dead ends: 872 [2021-10-06 21:02:54,414 INFO L226 Difference]: Without dead ends: 872 [2021-10-06 21:02:54,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.3ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:02:54,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-10-06 21:02:54,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 608. [2021-10-06 21:02:54,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 607 states have (on average 4.177924217462932) internal successors, (2536), 607 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:54,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 2536 transitions. [2021-10-06 21:02:54,440 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 2536 transitions. Word has length 15 [2021-10-06 21:02:54,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:54,441 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 2536 transitions. [2021-10-06 21:02:54,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:54,441 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 2536 transitions. [2021-10-06 21:02:54,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-06 21:02:54,445 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:54,445 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:54,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:54,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:54,659 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:54,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:54,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1064467939, now seen corresponding path program 1 times [2021-10-06 21:02:54,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:54,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673844360] [2021-10-06 21:02:54,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:54,662 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:54,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:54,663 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) [2021-10-06 21:02:54,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-06 21:02:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:54,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:02:54,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:54,993 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:54,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:55,164 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:55,165 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:55,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673844360] [2021-10-06 21:02:55,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673844360] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:55,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:55,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-06 21:02:55,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918369440] [2021-10-06 21:02:55,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 21:02:55,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:55,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 21:02:55,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:02:55,167 INFO L87 Difference]: Start difference. First operand 608 states and 2536 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:55,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:55,401 INFO L93 Difference]: Finished difference Result 717 states and 2849 transitions. [2021-10-06 21:02:55,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:02:55,401 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-06 21:02:55,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:55,405 INFO L225 Difference]: With dead ends: 717 [2021-10-06 21:02:55,405 INFO L226 Difference]: Without dead ends: 608 [2021-10-06 21:02:55,405 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 129.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:02:55,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-10-06 21:02:55,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2021-10-06 21:02:55,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 607 states have (on average 4.019769357495881) internal successors, (2440), 607 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:55,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 2440 transitions. [2021-10-06 21:02:55,425 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 2440 transitions. Word has length 23 [2021-10-06 21:02:55,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:55,425 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 2440 transitions. [2021-10-06 21:02:55,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:55,426 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 2440 transitions. [2021-10-06 21:02:55,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:02:55,429 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:55,430 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:55,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-10-06 21:02:55,643 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 [2021-10-06 21:02:55,644 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:55,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:55,645 INFO L82 PathProgramCache]: Analyzing trace with hash -850961566, now seen corresponding path program 1 times [2021-10-06 21:02:55,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:55,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1681929356] [2021-10-06 21:02:55,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:55,646 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:55,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:55,648 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) [2021-10-06 21:02:55,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-06 21:02:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:55,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:02:55,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:56,047 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:56,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:56,182 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:02:56,183 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:56,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1681929356] [2021-10-06 21:02:56,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1681929356] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-06 21:02:56,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-06 21:02:56,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2021-10-06 21:02:56,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239510183] [2021-10-06 21:02:56,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 21:02:56,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:56,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 21:02:56,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:02:56,185 INFO L87 Difference]: Start difference. First operand 608 states and 2440 transitions. Second operand has 7 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) [2021-10-06 21:02:56,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:56,486 INFO L93 Difference]: Finished difference Result 800 states and 3138 transitions. [2021-10-06 21:02:56,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:02:56,486 INFO L78 Accepts]: Start accepts. Automaton has has 7 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 24 [2021-10-06 21:02:56,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:56,490 INFO L225 Difference]: With dead ends: 800 [2021-10-06 21:02:56,490 INFO L226 Difference]: Without dead ends: 800 [2021-10-06 21:02:56,491 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 152.4ms TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:02:56,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2021-10-06 21:02:56,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 668. [2021-10-06 21:02:56,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 667 states have (on average 3.949025487256372) internal successors, (2634), 667 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:56,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 2634 transitions. [2021-10-06 21:02:56,514 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 2634 transitions. Word has length 24 [2021-10-06 21:02:56,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:56,514 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 2634 transitions. [2021-10-06 21:02:56,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 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) [2021-10-06 21:02:56,515 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 2634 transitions. [2021-10-06 21:02:56,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-06 21:02:56,518 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:56,518 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:56,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:56,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:56,732 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:56,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:56,733 INFO L82 PathProgramCache]: Analyzing trace with hash -394289398, now seen corresponding path program 2 times [2021-10-06 21:02:56,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:56,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545728782] [2021-10-06 21:02:56,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:02:56,735 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:56,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:56,736 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:56,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-06 21:02:56,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:02:56,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:56,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:02:56,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:57,164 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-06 21:02:57,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:57,418 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-06 21:02:57,419 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:57,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545728782] [2021-10-06 21:02:57,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545728782] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:02:57,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:02:57,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-06 21:02:57,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466989925] [2021-10-06 21:02:57,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 21:02:57,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:57,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 21:02:57,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:02:57,421 INFO L87 Difference]: Start difference. First operand 668 states and 2634 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:57,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:57,597 INFO L93 Difference]: Finished difference Result 839 states and 3159 transitions. [2021-10-06 21:02:57,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:02:57,598 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-06 21:02:57,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:57,600 INFO L225 Difference]: With dead ends: 839 [2021-10-06 21:02:57,601 INFO L226 Difference]: Without dead ends: 624 [2021-10-06 21:02:57,601 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 109.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:02:57,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-10-06 21:02:57,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 608. [2021-10-06 21:02:57,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 607 states have (on average 3.8780889621087313) internal successors, (2354), 607 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:57,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 2354 transitions. [2021-10-06 21:02:57,619 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 2354 transitions. Word has length 24 [2021-10-06 21:02:57,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:57,620 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 2354 transitions. [2021-10-06 21:02:57,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:57,620 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 2354 transitions. [2021-10-06 21:02:57,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:02:57,623 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:57,623 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:57,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:57,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:02:57,836 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:02:57,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:57,837 INFO L82 PathProgramCache]: Analyzing trace with hash -709481930, now seen corresponding path program 1 times [2021-10-06 21:02:57,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:57,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710078120] [2021-10-06 21:02:57,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:02:57,839 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:57,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:57,840 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:02:57,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-06 21:02:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:58,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-06 21:02:58,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:58,747 INFO L354 Elim1Store]: treesize reduction 394, result has 3.2 percent of original size [2021-10-06 21:02:58,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 312 treesize of output 114 [2021-10-06 21:03:02,049 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:02,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:03,309 INFO L354 Elim1Store]: treesize reduction 359, result has 10.3 percent of original size [2021-10-06 21:03:03,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 409 treesize of output 195 [2021-10-06 21:03:07,796 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:07,797 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:07,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710078120] [2021-10-06 21:03:07,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710078120] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:03:07,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:03:07,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 21:03:07,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163879477] [2021-10-06 21:03:07,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:03:07,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:07,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:03:07,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=255, Unknown=1, NotChecked=0, Total=306 [2021-10-06 21:03:07,799 INFO L87 Difference]: Start difference. First operand 608 states and 2354 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:24,230 WARN L207 SmtUtils]: Spent 6.28 s on a formula simplification. DAG size of input: 124 DAG size of output: 65 [2021-10-06 21:03:24,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:24,893 INFO L93 Difference]: Finished difference Result 954 states and 3441 transitions. [2021-10-06 21:03:24,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-06 21:03:24,894 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-06 21:03:24,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:24,897 INFO L225 Difference]: With dead ends: 954 [2021-10-06 21:03:24,897 INFO L226 Difference]: Without dead ends: 940 [2021-10-06 21:03:24,897 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 15519.9ms TimeCoverageRelationStatistics Valid=153, Invalid=548, Unknown=1, NotChecked=0, Total=702 [2021-10-06 21:03:24,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2021-10-06 21:03:24,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 641. [2021-10-06 21:03:24,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 640 states have (on average 3.803125) internal successors, (2434), 640 states have internal predecessors, (2434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:24,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 2434 transitions. [2021-10-06 21:03:24,929 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 2434 transitions. Word has length 25 [2021-10-06 21:03:24,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:24,930 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 2434 transitions. [2021-10-06 21:03:24,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:24,930 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 2434 transitions. [2021-10-06 21:03:24,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-06 21:03:24,933 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:24,933 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:24,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:25,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:03:25,145 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-06 21:03:25,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:25,146 INFO L82 PathProgramCache]: Analyzing trace with hash -567287050, now seen corresponding path program 2 times [2021-10-06 21:03:25,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:25,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012173556] [2021-10-06 21:03:25,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:03:25,146 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:25,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:25,147 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:03:25,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-06 21:03:25,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:03:25,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:25,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-06 21:03:25,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:25,572 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 779 treesize of output 763 [2021-10-06 21:03:26,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-06 21:03:26,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-06 21:03:26,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-06 21:03:26,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-06 21:03:26,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-06 21:03:26,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-06 21:03:26,688 INFO L354 Elim1Store]: treesize reduction 923, result has 6.4 percent of original size [2021-10-06 21:03:26,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 136 treesize of output 112 [2021-10-06 21:03:33,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-06 21:03:33,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-06 21:03:33,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-06 21:03:33,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-06 21:03:33,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-06 21:03:33,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-06 21:03:33,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-06 21:03:33,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-06 21:03:33,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-06 21:03:33,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-06 21:03:33,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-06 21:03:33,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-06 21:03:33,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-06 21:03:33,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-06 21:03:33,575 INFO L354 Elim1Store]: treesize reduction 562, result has 2.3 percent of original size [2021-10-06 21:03:33,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 504 treesize of output 222 [2021-10-06 21:03:34,799 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:03:34,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:43,708 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:43,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012173556] [2021-10-06 21:03:43,709 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-10-06 21:03:43,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1216846150] [2021-10-06 21:03:43,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:03:43,710 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-06 21:03:43,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 [2021-10-06 21:03:43,712 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-06 21:03:43,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-10-06 21:03:44,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:03:44,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:44,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-06 21:03:44,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:44,820 INFO L354 Elim1Store]: treesize reduction 289, result has 11.9 percent of original size [2021-10-06 21:03:44,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 52 [2021-10-06 21:03:49,724 INFO L354 Elim1Store]: treesize reduction 1262, result has 5.7 percent of original size [2021-10-06 21:03:49,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 94 treesize of output 114 [2021-10-06 21:06:29,229 WARN L207 SmtUtils]: Spent 2.48 m on a formula simplification. DAG size of input: 375 DAG size of output: 121 [2021-10-06 21:06:29,230 INFO L354 Elim1Store]: treesize reduction 2093, result has 15.9 percent of original size [2021-10-06 21:06:29,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 39 case distinctions, treesize of input 132 treesize of output 451 [2021-10-06 21:10:27,450 WARN L228 Executor]: External (MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-06 21:10:27,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-06 21:10:27,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537225073] [2021-10-06 21:10:27,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:10:27,451 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-06 21:10:27,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 21:10:27,453 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-06 21:10:27,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-06 21:10:27,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-06 21:10:29,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:10:29,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:10:29,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-06 21:10:29,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-06 21:10:29,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:10:29,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-06 21:10:29,605 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-06 21:10:29,605 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-06 21:10:29,609 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:10:29,610 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATION [2021-10-06 21:10:29,611 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATION [2021-10-06 21:10:29,611 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATION [2021-10-06 21:10:29,611 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATION [2021-10-06 21:10:29,611 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATION [2021-10-06 21:10:29,611 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATION [2021-10-06 21:10:29,612 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:10:29,612 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:10:29,612 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:10:29,612 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:10:29,612 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:10:29,612 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:10:29,612 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:10:29,612 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:10:29,612 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-06 21:10:29,613 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-06 21:10:29,613 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-06 21:10:29,613 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-06 21:10:29,613 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-06 21:10:29,613 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-06 21:10:29,613 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:10:29,613 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:10:29,614 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:10:29,614 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-06 21:10:29,614 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATION [2021-10-06 21:10:29,614 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATION [2021-10-06 21:10:29,614 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATION [2021-10-06 21:10:29,614 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATION [2021-10-06 21:10:29,614 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATION [2021-10-06 21:10:29,614 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATION [2021-10-06 21:10:29,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2021-10-06 21:10:29,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-06 21:10:30,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-10-06 21:10:30,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:10:30,224 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:10:30,224 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:10:30,225 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0 at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transformations.BlockEncodingBacktranslator.translateProgramExecution(BlockEncodingBacktranslator.java:130) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getProgramExecutionAsString(UnprovableResult.java:132) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getLongDescription(UnprovableResult.java:125) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:589) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-06 21:10:30,228 INFO L168 Benchmark]: Toolchain (without parser) took 538448.97 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 132.7 MB in the beginning and 100.3 MB in the end (delta: 32.4 MB). Peak memory consumption was 65.2 MB. Max. memory is 8.0 GB. [2021-10-06 21:10:30,228 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 158.3 MB. Free memory is still 130.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:10:30,229 INFO L168 Benchmark]: CACSL2BoogieTranslator took 492.47 ms. Allocated memory is still 158.3 MB. Free memory was 132.4 MB in the beginning and 117.3 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-10-06 21:10:30,229 INFO L168 Benchmark]: Boogie Procedure Inliner took 112.67 ms. Allocated memory is still 158.3 MB. Free memory was 117.3 MB in the beginning and 114.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:10:30,229 INFO L168 Benchmark]: Boogie Preprocessor took 101.90 ms. Allocated memory is still 158.3 MB. Free memory was 114.9 MB in the beginning and 112.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:10:30,230 INFO L168 Benchmark]: RCFGBuilder took 2131.78 ms. Allocated memory is still 158.3 MB. Free memory was 112.7 MB in the beginning and 83.4 MB in the end (delta: 29.3 MB). Peak memory consumption was 29.2 MB. Max. memory is 8.0 GB. [2021-10-06 21:10:30,230 INFO L168 Benchmark]: TraceAbstraction took 535594.22 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 82.8 MB in the beginning and 100.3 MB in the end (delta: -17.5 MB). Peak memory consumption was 16.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:10:30,232 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 158.3 MB. Free memory is still 130.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 492.47 ms. Allocated memory is still 158.3 MB. Free memory was 132.4 MB in the beginning and 117.3 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 112.67 ms. Allocated memory is still 158.3 MB. Free memory was 117.3 MB in the beginning and 114.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 101.90 ms. Allocated memory is still 158.3 MB. Free memory was 114.9 MB in the beginning and 112.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2131.78 ms. Allocated memory is still 158.3 MB. Free memory was 112.7 MB in the beginning and 83.4 MB in the end (delta: 29.3 MB). Peak memory consumption was 29.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 535594.22 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 82.8 MB in the beginning and 100.3 MB in the end (delta: -17.5 MB). Peak memory consumption was 16.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 24900.6ms, 182 PlacesBefore, 55 PlacesAfterwards, 182 TransitionsBefore, 49 TransitionsAfterwards, 2160 CoEnabledTransitionPairs, 8 FixpointIterations, 111 TrivialSequentialCompositions, 51 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 9 ConcurrentYvCompositions, 6 ChoiceCompositions, 183 TotalNumberOfCompositions, 2835 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2639, positive: 2609, positive conditional: 0, positive unconditional: 2609, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1273, positive: 1268, positive conditional: 0, positive unconditional: 1268, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1273, positive: 1268, positive conditional: 0, positive unconditional: 1268, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 469, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 469, negative conditional: 0, negative unconditional: 469, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2639, positive: 1341, positive conditional: 0, positive unconditional: 1341, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 1273, unknown conditional: 0, unknown unconditional: 1273] , Statistics on independence cache: Total cache size (in pairs): 112, Positive cache size: 110, Positive conditional cache size: 0, Positive unconditional cache size: 110, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - 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 - ExceptionOrErrorResult: ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transformations.BlockEncodingBacktranslator.translateProgramExecution(BlockEncodingBacktranslator.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...