/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 16:31:39,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 16:31:39,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 16:31:39,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-07 16:31:39,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-07 16:31:39,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-07 16:31:39,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-07 16:31:39,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-07 16:31:39,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-07 16:31:39,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-07 16:31:39,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-07 16:31:39,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-07 16:31:39,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-07 16:31:39,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-07 16:31:39,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-07 16:31:39,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-07 16:31:39,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-07 16:31:39,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-07 16:31:39,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-07 16:31:39,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-07 16:31:39,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-07 16:31:39,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-07 16:31:39,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-07 16:31:39,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-07 16:31:39,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-07 16:31:39,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-07 16:31:39,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-07 16:31:39,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-07 16:31:39,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-07 16:31:39,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-07 16:31:39,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-07 16:31:39,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-07 16:31:39,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-07 16:31:39,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 16:31:39,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 16:31:39,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 16:31:39,479 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 16:31:39,548 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 16:31:39,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 16:31:39,549 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 16:31:39,550 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 16:31:39,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 16:31:39,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 16:31:39,555 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 16:31:39,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 16:31:39,556 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 16:31:39,556 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 16:31:39,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 16:31:39,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 16:31:39,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 16:31:39,558 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 16:31:39,559 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 16:31:39,559 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 16:31:39,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 16:31:39,559 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 16:31:39,559 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 16:31:39,560 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 16:31:39,560 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 16:31:39,560 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 16:31:39,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 16:31:39,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 16:31:39,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 16:31:39,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:31:39,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 16:31:39,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 16:31:39,562 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 16:31:39,562 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 16:31:39,562 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 16:31:39,562 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 16:31:39,563 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 16:31:40,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 16:31:40,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 16:31:40,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 16:31:40,058 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 16:31:40,059 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 16:31:40,060 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2021-10-07 16:31:40,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/341cd0351/239a65ff78094478bba8e766976a1a83/FLAGdbc33ddb2 [2021-10-07 16:31:40,861 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 16:31:40,862 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2021-10-07 16:31:40,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/341cd0351/239a65ff78094478bba8e766976a1a83/FLAGdbc33ddb2 [2021-10-07 16:31:40,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/341cd0351/239a65ff78094478bba8e766976a1a83 [2021-10-07 16:31:40,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 16:31:40,926 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 16:31:40,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 16:31:40,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 16:31:40,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 16:31:40,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:31:40" (1/1) ... [2021-10-07 16:31:40,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50d4bdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:31:40, skipping insertion in model container [2021-10-07 16:31:40,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:31:40" (1/1) ... [2021-10-07 16:31:40,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 16:31:40,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 16:31:41,313 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c[2692,2705] [2021-10-07 16:31:41,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:31:41,362 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-07 16:31:41,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 16:31:41,388 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c[2692,2705] [2021-10-07 16:31:41,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:31:41,398 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 16:31:41,425 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c[2692,2705] [2021-10-07 16:31:41,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:31:41,461 INFO L208 MainTranslator]: Completed translation [2021-10-07 16:31:41,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:31:41 WrapperNode [2021-10-07 16:31:41,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 16:31:41,464 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 16:31:41,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 16:31:41,464 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 16:31:41,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:31:41" (1/1) ... [2021-10-07 16:31:41,504 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:31:41" (1/1) ... [2021-10-07 16:31:41,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 16:31:41,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 16:31:41,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 16:31:41,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 16:31:41,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:31:41" (1/1) ... [2021-10-07 16:31:41,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:31:41" (1/1) ... [2021-10-07 16:31:41,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:31:41" (1/1) ... [2021-10-07 16:31:41,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:31:41" (1/1) ... [2021-10-07 16:31:41,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:31:41" (1/1) ... [2021-10-07 16:31:41,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:31:41" (1/1) ... [2021-10-07 16:31:41,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:31:41" (1/1) ... [2021-10-07 16:31:41,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 16:31:41,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 16:31:41,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 16:31:41,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 16:31:41,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:31:41" (1/1) ... [2021-10-07 16:31:41,649 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:31:41,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 16:31:41,681 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-07 16:31:41,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-07 16:31:41,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 16:31:41,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 16:31:41,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 16:31:41,750 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 16:31:41,750 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 16:31:41,750 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 16:31:41,750 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 16:31:41,750 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-07 16:31:41,750 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-07 16:31:41,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 16:31:41,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 16:31:41,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-07 16:31:41,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 16:31:41,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 16:31:41,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 16:31:41,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 16:31:41,754 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 16:31:42,873 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 16:31:42,873 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2021-10-07 16:31:42,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:31:42 BoogieIcfgContainer [2021-10-07 16:31:42,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 16:31:42,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 16:31:42,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 16:31:42,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 16:31:42,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 04:31:40" (1/3) ... [2021-10-07 16:31:42,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b85be7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:31:42, skipping insertion in model container [2021-10-07 16:31:42,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:31:41" (2/3) ... [2021-10-07 16:31:42,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b85be7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:31:42, skipping insertion in model container [2021-10-07 16:31:42,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:31:42" (3/3) ... [2021-10-07 16:31:42,886 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons.wvr.c [2021-10-07 16:31:42,892 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 16:31:42,893 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-10-07 16:31:42,893 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 16:31:42,941 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,942 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,942 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,942 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,943 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,943 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,944 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,944 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,944 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,944 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,945 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,945 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,945 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,946 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,946 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,947 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,947 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,947 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,948 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,948 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,948 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,949 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,949 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,950 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,950 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,950 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,951 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,952 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,953 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,953 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,953 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,953 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,953 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,953 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,954 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,954 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,954 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,955 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,955 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,955 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,955 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,955 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,956 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,956 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,956 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,956 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,956 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,957 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,958 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,958 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,958 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,958 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,958 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,958 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,959 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,960 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,960 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,960 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,960 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,961 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,963 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,964 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,965 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,966 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,966 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,967 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,970 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,970 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,971 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,971 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,972 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,972 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,972 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,972 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,976 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,977 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,981 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,982 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,982 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~temp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,983 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,983 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,984 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:42,985 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:31:43,002 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-07 16:31:43,054 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 16:31:43,062 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-07 16:31:43,062 INFO L340 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2021-10-07 16:31:43,082 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 16:31:43,096 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 157 transitions, 338 flow [2021-10-07 16:31:43,100 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 157 transitions, 338 flow [2021-10-07 16:31:43,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 156 places, 157 transitions, 338 flow [2021-10-07 16:31:43,222 INFO L129 PetriNetUnfolder]: 11/154 cut-off events. [2021-10-07 16:31:43,222 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-07 16:31:43,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 154 events. 11/154 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 137 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 117. Up to 3 conditions per place. [2021-10-07 16:31:43,238 INFO L116 LiptonReduction]: Number of co-enabled transitions 1462 [2021-10-07 16:32:03,471 INFO L131 LiptonReduction]: Checked pairs total: 3584 [2021-10-07 16:32:03,471 INFO L133 LiptonReduction]: Total number of compositions: 163 [2021-10-07 16:32:03,482 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 48 transitions, 120 flow [2021-10-07 16:32:03,556 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 602 states, 538 states have (on average 3.358736059479554) internal successors, (1807), 601 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:03,561 INFO L276 IsEmpty]: Start isEmpty. Operand has 602 states, 538 states have (on average 3.358736059479554) internal successors, (1807), 601 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:03,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 16:32:03,567 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:32:03,568 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 16:32:03,569 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 23 more)] === [2021-10-07 16:32:03,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:32:03,578 INFO L82 PathProgramCache]: Analyzing trace with hash 20960, now seen corresponding path program 1 times [2021-10-07 16:32:03,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:32:03,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415898754] [2021-10-07 16:32:03,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:32:03,593 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:32:03,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:32:03,597 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:32:03,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 16:32:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:32:03,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 16:32:03,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:32:04,261 INFO L354 Elim1Store]: treesize reduction 233, result has 21.3 percent of original size [2021-10-07 16:32:04,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 54 treesize of output 100 [2021-10-07 16:32:04,285 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-07 16:32:04,286 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 103 treesize of output 99 [2021-10-07 16:32:06,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:06,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:06,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:06,314 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:06,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1415898754] [2021-10-07 16:32:06,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1415898754] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:32:06,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:32:06,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:32:06,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51978390] [2021-10-07 16:32:06,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:32:06,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:06,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:32:06,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:32:06,352 INFO L87 Difference]: Start difference. First operand has 602 states, 538 states have (on average 3.358736059479554) internal successors, (1807), 601 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:06,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:32:06,674 INFO L93 Difference]: Finished difference Result 516 states and 1511 transitions. [2021-10-07 16:32:06,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:32:06,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-07 16:32:06,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:32:06,702 INFO L225 Difference]: With dead ends: 516 [2021-10-07 16:32:06,702 INFO L226 Difference]: Without dead ends: 516 [2021-10-07 16:32:06,703 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 71.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:32:06,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-10-07 16:32:06,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2021-10-07 16:32:06,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 463 states have (on average 3.263498920086393) internal successors, (1511), 515 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:06,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1511 transitions. [2021-10-07 16:32:06,820 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1511 transitions. Word has length 2 [2021-10-07 16:32:06,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:32:06,821 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 1511 transitions. [2021-10-07 16:32:06,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:06,821 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1511 transitions. [2021-10-07 16:32:06,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 16:32:06,822 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:32:06,822 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 16:32:06,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-07 16:32:07,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:32:07,035 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 23 more)] === [2021-10-07 16:32:07,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:32:07,036 INFO L82 PathProgramCache]: Analyzing trace with hash 20864, now seen corresponding path program 1 times [2021-10-07 16:32:07,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:32:07,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [300718274] [2021-10-07 16:32:07,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:32:07,038 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:32:07,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:32:07,039 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:32:07,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 16:32:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:32:07,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 16:32:07,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:32:07,155 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 16:32:07,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-07 16:32:07,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:07,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:07,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:07,194 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:07,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [300718274] [2021-10-07 16:32:07,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [300718274] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:32:07,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:32:07,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 16:32:07,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465442020] [2021-10-07 16:32:07,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:32:07,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:07,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:32:07,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:32:07,201 INFO L87 Difference]: Start difference. First operand 516 states and 1511 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:07,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:32:07,334 INFO L93 Difference]: Finished difference Result 515 states and 1510 transitions. [2021-10-07 16:32:07,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:32:07,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-07 16:32:07,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:32:07,348 INFO L225 Difference]: With dead ends: 515 [2021-10-07 16:32:07,349 INFO L226 Difference]: Without dead ends: 515 [2021-10-07 16:32:07,350 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:32:07,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2021-10-07 16:32:07,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2021-10-07 16:32:07,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 463 states have (on average 3.26133909287257) internal successors, (1510), 514 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:07,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 1510 transitions. [2021-10-07 16:32:07,388 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 1510 transitions. Word has length 2 [2021-10-07 16:32:07,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:32:07,389 INFO L470 AbstractCegarLoop]: Abstraction has 515 states and 1510 transitions. [2021-10-07 16:32:07,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:07,389 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 1510 transitions. [2021-10-07 16:32:07,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 16:32:07,390 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:32:07,390 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 16:32:07,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-07 16:32:07,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:32:07,603 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 23 more)] === [2021-10-07 16:32:07,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:32:07,604 INFO L82 PathProgramCache]: Analyzing trace with hash 20865, now seen corresponding path program 1 times [2021-10-07 16:32:07,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:32:07,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2061295987] [2021-10-07 16:32:07,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:32:07,606 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:32:07,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:32:07,607 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:32:07,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 16:32:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:32:07,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:32:07,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:32:07,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:32:08,000 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:32:08,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-07 16:32:08,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:08,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:08,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:08,202 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:08,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2061295987] [2021-10-07 16:32:08,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2061295987] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:32:08,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:32:08,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:32:08,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063004611] [2021-10-07 16:32:08,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:32:08,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:08,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:32:08,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:32:08,205 INFO L87 Difference]: Start difference. First operand 515 states and 1510 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:08,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:32:08,582 INFO L93 Difference]: Finished difference Result 1029 states and 3021 transitions. [2021-10-07 16:32:08,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:32:08,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-07 16:32:08,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:32:08,593 INFO L225 Difference]: With dead ends: 1029 [2021-10-07 16:32:08,593 INFO L226 Difference]: Without dead ends: 1029 [2021-10-07 16:32:08,594 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 85.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:32:08,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2021-10-07 16:32:08,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 517. [2021-10-07 16:32:08,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 465 states have (on average 3.260215053763441) internal successors, (1516), 516 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:08,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 1516 transitions. [2021-10-07 16:32:08,636 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 1516 transitions. Word has length 2 [2021-10-07 16:32:08,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:32:08,637 INFO L470 AbstractCegarLoop]: Abstraction has 517 states and 1516 transitions. [2021-10-07 16:32:08,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:08,637 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 1516 transitions. [2021-10-07 16:32:08,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 16:32:08,637 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:32:08,638 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 16:32:08,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-07 16:32:08,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:32:08,850 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 23 more)] === [2021-10-07 16:32:08,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:32:08,851 INFO L82 PathProgramCache]: Analyzing trace with hash 20958, now seen corresponding path program 1 times [2021-10-07 16:32:08,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:32:08,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973557561] [2021-10-07 16:32:08,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:32:08,852 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:32:08,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:32:08,853 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:32:08,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-07 16:32:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:32:08,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:32:08,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:32:08,991 INFO L354 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2021-10-07 16:32:08,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 53 [2021-10-07 16:32:09,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:09,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:09,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:09,094 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:09,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973557561] [2021-10-07 16:32:09,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973557561] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:32:09,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:32:09,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:32:09,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500734496] [2021-10-07 16:32:09,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:32:09,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:09,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:32:09,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:32:09,097 INFO L87 Difference]: Start difference. First operand 517 states and 1516 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:09,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:32:09,226 INFO L93 Difference]: Finished difference Result 432 states and 1219 transitions. [2021-10-07 16:32:09,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:32:09,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-07 16:32:09,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:32:09,231 INFO L225 Difference]: With dead ends: 432 [2021-10-07 16:32:09,231 INFO L226 Difference]: Without dead ends: 432 [2021-10-07 16:32:09,232 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:32:09,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-10-07 16:32:09,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2021-10-07 16:32:09,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 390 states have (on average 3.1256410256410256) internal successors, (1219), 431 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:09,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 1219 transitions. [2021-10-07 16:32:09,252 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 1219 transitions. Word has length 2 [2021-10-07 16:32:09,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:32:09,252 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 1219 transitions. [2021-10-07 16:32:09,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:09,253 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 1219 transitions. [2021-10-07 16:32:09,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 16:32:09,253 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:32:09,253 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-07 16:32:09,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-07 16:32:09,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:32:09,467 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 23 more)] === [2021-10-07 16:32:09,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:32:09,468 INFO L82 PathProgramCache]: Analyzing trace with hash 20128705, now seen corresponding path program 1 times [2021-10-07 16:32:09,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:32:09,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1978119163] [2021-10-07 16:32:09,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:32:09,469 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:32:09,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:32:09,471 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:32:09,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-07 16:32:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:32:09,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 16:32:09,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:32:09,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:32:09,894 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:32:09,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-07 16:32:10,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:10,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:10,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:10,578 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:10,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1978119163] [2021-10-07 16:32:10,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1978119163] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:32:10,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:32:10,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 16:32:10,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076484260] [2021-10-07 16:32:10,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:32:10,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:10,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:32:10,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:32:10,581 INFO L87 Difference]: Start difference. First operand 432 states and 1219 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:12,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:32:12,372 INFO L93 Difference]: Finished difference Result 2571 states and 7282 transitions. [2021-10-07 16:32:12,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 16:32:12,383 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-07 16:32:12,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:32:12,408 INFO L225 Difference]: With dead ends: 2571 [2021-10-07 16:32:12,409 INFO L226 Difference]: Without dead ends: 2571 [2021-10-07 16:32:12,409 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 828.0ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:32:12,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2021-10-07 16:32:12,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 436. [2021-10-07 16:32:12,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 394 states have (on average 3.1142131979695433) internal successors, (1227), 435 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:12,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1227 transitions. [2021-10-07 16:32:12,457 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1227 transitions. Word has length 4 [2021-10-07 16:32:12,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:32:12,457 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 1227 transitions. [2021-10-07 16:32:12,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:12,458 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1227 transitions. [2021-10-07 16:32:12,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 16:32:12,458 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:32:12,458 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 16:32:12,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-07 16:32:12,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:32:12,672 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 23 more)] === [2021-10-07 16:32:12,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:32:12,673 INFO L82 PathProgramCache]: Analyzing trace with hash 20156289, now seen corresponding path program 1 times [2021-10-07 16:32:12,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:32:12,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680983041] [2021-10-07 16:32:12,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:32:12,676 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:32:12,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:32:12,677 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:32:12,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-07 16:32:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:32:12,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 16:32:12,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:32:12,800 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 16:32:12,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 45 [2021-10-07 16:32:12,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:12,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:13,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:13,016 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:13,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680983041] [2021-10-07 16:32:13,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680983041] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:32:13,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:32:13,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:32:13,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390855028] [2021-10-07 16:32:13,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:32:13,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:13,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:32:13,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:32:13,019 INFO L87 Difference]: Start difference. First operand 436 states and 1227 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:13,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:32:13,146 INFO L93 Difference]: Finished difference Result 416 states and 1180 transitions. [2021-10-07 16:32:13,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:32:13,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-07 16:32:13,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:32:13,151 INFO L225 Difference]: With dead ends: 416 [2021-10-07 16:32:13,151 INFO L226 Difference]: Without dead ends: 416 [2021-10-07 16:32:13,152 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:32:13,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-10-07 16:32:13,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2021-10-07 16:32:13,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 380 states have (on average 3.1052631578947367) internal successors, (1180), 415 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:13,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 1180 transitions. [2021-10-07 16:32:13,170 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 1180 transitions. Word has length 4 [2021-10-07 16:32:13,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:32:13,171 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 1180 transitions. [2021-10-07 16:32:13,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:13,171 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 1180 transitions. [2021-10-07 16:32:13,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 16:32:13,171 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:32:13,172 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 16:32:13,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-07 16:32:13,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:32:13,387 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 23 more)] === [2021-10-07 16:32:13,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:32:13,388 INFO L82 PathProgramCache]: Analyzing trace with hash 20156291, now seen corresponding path program 1 times [2021-10-07 16:32:13,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:32:13,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391376496] [2021-10-07 16:32:13,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:32:13,389 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:32:13,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:32:13,390 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:32:13,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-07 16:32:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:32:13,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:32:13,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:32:13,887 INFO L354 Elim1Store]: treesize reduction 233, result has 21.3 percent of original size [2021-10-07 16:32:13,888 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 45 treesize of output 91 [2021-10-07 16:32:13,894 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 93 treesize of output 91 [2021-10-07 16:32:17,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:17,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:17,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:17,345 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:17,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1391376496] [2021-10-07 16:32:17,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1391376496] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:32:17,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:32:17,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:32:17,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056849646] [2021-10-07 16:32:17,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:32:17,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:17,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:32:17,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:32:17,348 INFO L87 Difference]: Start difference. First operand 416 states and 1180 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:17,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:32:17,592 INFO L93 Difference]: Finished difference Result 396 states and 1133 transitions. [2021-10-07 16:32:17,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:32:17,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-07 16:32:17,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:32:17,597 INFO L225 Difference]: With dead ends: 396 [2021-10-07 16:32:17,597 INFO L226 Difference]: Without dead ends: 396 [2021-10-07 16:32:17,598 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:32:17,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-10-07 16:32:17,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2021-10-07 16:32:17,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 366 states have (on average 3.0956284153005464) internal successors, (1133), 395 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:17,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1133 transitions. [2021-10-07 16:32:17,614 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1133 transitions. Word has length 4 [2021-10-07 16:32:17,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:32:17,614 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 1133 transitions. [2021-10-07 16:32:17,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:17,614 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1133 transitions. [2021-10-07 16:32:17,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 16:32:17,615 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:32:17,615 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 16:32:17,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-07 16:32:17,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:32:17,828 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 23 more)] === [2021-10-07 16:32:17,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:32:17,829 INFO L82 PathProgramCache]: Analyzing trace with hash 624840614, now seen corresponding path program 1 times [2021-10-07 16:32:17,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:32:17,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968433579] [2021-10-07 16:32:17,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:32:17,830 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:32:17,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:32:17,832 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:32:17,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-07 16:32:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:32:17,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 16:32:17,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:32:17,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:17,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:18,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:18,006 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:18,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968433579] [2021-10-07 16:32:18,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968433579] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:32:18,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:32:18,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 16:32:18,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309533197] [2021-10-07 16:32:18,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:32:18,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:18,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:32:18,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:32:18,008 INFO L87 Difference]: Start difference. First operand 396 states and 1133 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:18,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:32:18,142 INFO L93 Difference]: Finished difference Result 559 states and 1518 transitions. [2021-10-07 16:32:18,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:32:18,144 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 16:32:18,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:32:18,149 INFO L225 Difference]: With dead ends: 559 [2021-10-07 16:32:18,149 INFO L226 Difference]: Without dead ends: 520 [2021-10-07 16:32:18,149 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.9ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-07 16:32:18,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-10-07 16:32:18,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 498. [2021-10-07 16:32:18,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 462 states have (on average 2.982683982683983) internal successors, (1378), 497 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:18,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1378 transitions. [2021-10-07 16:32:18,171 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1378 transitions. Word has length 5 [2021-10-07 16:32:18,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:32:18,172 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 1378 transitions. [2021-10-07 16:32:18,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:18,172 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1378 transitions. [2021-10-07 16:32:18,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 16:32:18,173 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:32:18,173 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 16:32:18,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-07 16:32:18,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:32:18,386 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 23 more)] === [2021-10-07 16:32:18,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:32:18,386 INFO L82 PathProgramCache]: Analyzing trace with hash -2130225196, now seen corresponding path program 1 times [2021-10-07 16:32:18,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:32:18,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1001716049] [2021-10-07 16:32:18,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:32:18,387 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:32:18,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:32:18,389 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:32:18,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-07 16:32:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:32:18,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:32:18,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:32:18,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:32:18,781 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:32:18,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-07 16:32:19,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:19,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:19,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:19,910 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:19,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1001716049] [2021-10-07 16:32:19,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1001716049] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:32:19,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:32:19,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 16:32:19,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189652264] [2021-10-07 16:32:19,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:32:19,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:19,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:32:19,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:32:19,912 INFO L87 Difference]: Start difference. First operand 498 states and 1378 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:22,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:32:22,712 INFO L93 Difference]: Finished difference Result 1090 states and 3036 transitions. [2021-10-07 16:32:22,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 16:32:22,714 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-07 16:32:22,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:32:22,723 INFO L225 Difference]: With dead ends: 1090 [2021-10-07 16:32:22,723 INFO L226 Difference]: Without dead ends: 1090 [2021-10-07 16:32:22,724 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2033.1ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:32:22,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2021-10-07 16:32:22,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 733. [2021-10-07 16:32:22,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 697 states have (on average 3.0631276901004303) internal successors, (2135), 732 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:22,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 2135 transitions. [2021-10-07 16:32:22,756 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 2135 transitions. Word has length 6 [2021-10-07 16:32:22,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:32:22,757 INFO L470 AbstractCegarLoop]: Abstraction has 733 states and 2135 transitions. [2021-10-07 16:32:22,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:22,757 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 2135 transitions. [2021-10-07 16:32:22,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 16:32:22,758 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:32:22,758 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 16:32:22,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-07 16:32:22,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:32:22,971 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 23 more)] === [2021-10-07 16:32:22,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:32:22,971 INFO L82 PathProgramCache]: Analyzing trace with hash -2130225195, now seen corresponding path program 1 times [2021-10-07 16:32:22,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:32:22,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746584424] [2021-10-07 16:32:22,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:32:22,972 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:32:22,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:32:22,973 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:32:22,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-07 16:32:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:32:23,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:32:23,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:32:23,118 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 16:32:23,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-07 16:32:23,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:32:23,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:23,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:32:23,196 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:23,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746584424] [2021-10-07 16:32:23,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1746584424] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:32:23,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:32:23,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-07 16:32:23,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325047184] [2021-10-07 16:32:23,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:32:23,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:23,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:32:23,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:32:23,199 INFO L87 Difference]: Start difference. First operand 733 states and 2135 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) [2021-10-07 16:32:23,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:32:23,334 INFO L93 Difference]: Finished difference Result 573 states and 1609 transitions. [2021-10-07 16:32:23,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:32:23,335 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 6 [2021-10-07 16:32:23,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:32:23,339 INFO L225 Difference]: With dead ends: 573 [2021-10-07 16:32:23,339 INFO L226 Difference]: Without dead ends: 573 [2021-10-07 16:32:23,339 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 16:32:23,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-10-07 16:32:23,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 573. [2021-10-07 16:32:23,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 552 states have (on average 2.914855072463768) internal successors, (1609), 572 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:23,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 1609 transitions. [2021-10-07 16:32:23,360 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 1609 transitions. Word has length 6 [2021-10-07 16:32:23,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:32:23,360 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 1609 transitions. [2021-10-07 16:32:23,361 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) [2021-10-07 16:32:23,361 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 1609 transitions. [2021-10-07 16:32:23,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 16:32:23,378 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:32:23,378 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 16:32:23,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-07 16:32:23,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:32:23,591 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 23 more)] === [2021-10-07 16:32:23,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:32:23,592 INFO L82 PathProgramCache]: Analyzing trace with hash -2104626968, now seen corresponding path program 1 times [2021-10-07 16:32:23,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:32:23,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110715166] [2021-10-07 16:32:23,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:32:23,593 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:32:23,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:32:23,594 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:32:23,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-07 16:32:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:32:23,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 16:32:23,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:32:23,751 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 16:32:23,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-07 16:32:23,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:23,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:23,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:23,813 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:23,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110715166] [2021-10-07 16:32:23,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110715166] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:32:23,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:32:23,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 16:32:23,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791941525] [2021-10-07 16:32:23,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:32:23,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:23,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:32:23,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:32:23,815 INFO L87 Difference]: Start difference. First operand 573 states and 1609 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:23,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:32:23,892 INFO L93 Difference]: Finished difference Result 507 states and 1418 transitions. [2021-10-07 16:32:23,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:32:23,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-07 16:32:23,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:32:23,898 INFO L225 Difference]: With dead ends: 507 [2021-10-07 16:32:23,898 INFO L226 Difference]: Without dead ends: 507 [2021-10-07 16:32:23,898 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:32:23,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-10-07 16:32:23,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 507. [2021-10-07 16:32:23,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 494 states have (on average 2.8704453441295548) internal successors, (1418), 506 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:23,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 1418 transitions. [2021-10-07 16:32:23,918 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 1418 transitions. Word has length 6 [2021-10-07 16:32:23,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:32:23,918 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 1418 transitions. [2021-10-07 16:32:23,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:23,919 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 1418 transitions. [2021-10-07 16:32:23,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 16:32:23,921 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:32:23,921 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 16:32:23,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-07 16:32:24,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:32:24,133 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 23 more)] === [2021-10-07 16:32:24,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:32:24,134 INFO L82 PathProgramCache]: Analyzing trace with hash -2104626970, now seen corresponding path program 1 times [2021-10-07 16:32:24,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:32:24,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582656708] [2021-10-07 16:32:24,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:32:24,136 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:32:24,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:32:24,139 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:32:24,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-07 16:32:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:32:24,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:32:24,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:32:24,517 INFO L354 Elim1Store]: treesize reduction 241, result has 18.6 percent of original size [2021-10-07 16:32:24,517 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 42 treesize of output 80 [2021-10-07 16:32:24,531 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 83 treesize of output 81 [2021-10-07 16:32:27,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:27,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:27,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:27,306 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:27,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582656708] [2021-10-07 16:32:27,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582656708] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:32:27,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:32:27,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:32:27,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836914175] [2021-10-07 16:32:27,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:32:27,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:27,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:32:27,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:32:27,309 INFO L87 Difference]: Start difference. First operand 507 states and 1418 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:27,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:32:27,408 INFO L93 Difference]: Finished difference Result 441 states and 1227 transitions. [2021-10-07 16:32:27,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:32:27,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-07 16:32:27,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:32:27,412 INFO L225 Difference]: With dead ends: 441 [2021-10-07 16:32:27,412 INFO L226 Difference]: Without dead ends: 432 [2021-10-07 16:32:27,413 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2048.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:32:27,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-10-07 16:32:27,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2021-10-07 16:32:27,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 427 states have (on average 2.8360655737704916) internal successors, (1211), 431 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:27,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 1211 transitions. [2021-10-07 16:32:27,446 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 1211 transitions. Word has length 6 [2021-10-07 16:32:27,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:32:27,447 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 1211 transitions. [2021-10-07 16:32:27,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:27,447 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 1211 transitions. [2021-10-07 16:32:27,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:32:27,447 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:32:27,448 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1] [2021-10-07 16:32:27,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-07 16:32:27,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:32:27,660 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 23 more)] === [2021-10-07 16:32:27,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:32:27,661 INFO L82 PathProgramCache]: Analyzing trace with hash 737810497, now seen corresponding path program 2 times [2021-10-07 16:32:27,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:32:27,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810918109] [2021-10-07 16:32:27,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:32:27,663 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:32:27,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:32:27,664 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:32:27,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-07 16:32:27,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:32:27,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:32:27,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:32:27,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:32:27,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:32:28,066 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:32:28,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-07 16:32:28,484 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:28,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:30,184 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:30,184 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:30,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810918109] [2021-10-07 16:32:30,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810918109] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:32:30,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:32:30,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:32:30,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550699281] [2021-10-07 16:32:30,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:32:30,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:30,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:32:30,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:32:30,187 INFO L87 Difference]: Start difference. First operand 432 states and 1211 transitions. Second operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:37,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:32:37,540 INFO L93 Difference]: Finished difference Result 2771 states and 7798 transitions. [2021-10-07 16:32:37,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 16:32:37,542 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 16:32:37,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:32:37,560 INFO L225 Difference]: With dead ends: 2771 [2021-10-07 16:32:37,561 INFO L226 Difference]: Without dead ends: 2771 [2021-10-07 16:32:37,561 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 5962.8ms TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:32:37,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2771 states. [2021-10-07 16:32:37,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2771 to 440. [2021-10-07 16:32:37,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 435 states have (on average 2.820689655172414) internal successors, (1227), 439 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:37,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 1227 transitions. [2021-10-07 16:32:37,599 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 1227 transitions. Word has length 8 [2021-10-07 16:32:37,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:32:37,599 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 1227 transitions. [2021-10-07 16:32:37,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:37,599 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 1227 transitions. [2021-10-07 16:32:37,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 16:32:37,600 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:32:37,600 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2021-10-07 16:32:37,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-10-07 16:32:37,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:32:37,813 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 23 more)] === [2021-10-07 16:32:37,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:32:37,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1398139686, now seen corresponding path program 2 times [2021-10-07 16:32:37,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:32:37,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273356364] [2021-10-07 16:32:37,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:32:37,816 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:32:37,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:32:37,817 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:32:37,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-07 16:32:37,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 16:32:37,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:32:37,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:32:37,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:32:37,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:32:38,309 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:32:38,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-07 16:32:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-07 16:32:38,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:39,572 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-07 16:32:39,572 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:39,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273356364] [2021-10-07 16:32:39,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273356364] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:32:39,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:32:39,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 16:32:39,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248037654] [2021-10-07 16:32:39,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:32:39,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:39,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:32:39,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:32:39,575 INFO L87 Difference]: Start difference. First operand 440 states and 1227 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:39,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:32:39,760 INFO L93 Difference]: Finished difference Result 374 states and 1033 transitions. [2021-10-07 16:32:39,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:32:39,762 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-07 16:32:39,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:32:39,765 INFO L225 Difference]: With dead ends: 374 [2021-10-07 16:32:39,765 INFO L226 Difference]: Without dead ends: 374 [2021-10-07 16:32:39,765 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 296.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-07 16:32:39,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-10-07 16:32:39,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 235. [2021-10-07 16:32:39,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 233 states have (on average 2.652360515021459) internal successors, (618), 234 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:39,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 618 transitions. [2021-10-07 16:32:39,775 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 618 transitions. Word has length 9 [2021-10-07 16:32:39,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:32:39,775 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 618 transitions. [2021-10-07 16:32:39,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:39,775 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 618 transitions. [2021-10-07 16:32:39,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:32:39,777 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:32:39,777 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1] [2021-10-07 16:32:39,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-07 16:32:39,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:32:39,991 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 23 more)] === [2021-10-07 16:32:39,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:32:39,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1509769537, now seen corresponding path program 3 times [2021-10-07 16:32:39,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:32:39,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002651492] [2021-10-07 16:32:39,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:32:39,994 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:32:39,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:32:39,995 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:32:40,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-07 16:32:40,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-07 16:32:40,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:32:40,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:32:40,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:32:40,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:32:40,651 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:32:40,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-07 16:32:41,542 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:41,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:32:47,052 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:32:47,053 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:32:47,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002651492] [2021-10-07 16:32:47,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002651492] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:32:47,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:32:47,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2021-10-07 16:32:47,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616690043] [2021-10-07 16:32:47,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-07 16:32:47,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:32:47,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-07 16:32:47,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-10-07 16:32:47,056 INFO L87 Difference]: Start difference. First operand 235 states and 618 transitions. Second operand has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:32:57,682 WARN L207 SmtUtils]: Spent 7.32 s on a formula simplification that was a NOOP. DAG size: 168 [2021-10-07 16:33:05,723 WARN L207 SmtUtils]: Spent 7.18 s on a formula simplification that was a NOOP. DAG size: 157 [2021-10-07 16:33:12,634 WARN L207 SmtUtils]: Spent 6.12 s on a formula simplification that was a NOOP. DAG size: 146 [2021-10-07 16:33:42,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:33:42,384 INFO L93 Difference]: Finished difference Result 4607 states and 12850 transitions. [2021-10-07 16:33:42,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-07 16:33:42,387 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 16:33:42,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:33:42,422 INFO L225 Difference]: With dead ends: 4607 [2021-10-07 16:33:42,422 INFO L226 Difference]: Without dead ends: 4607 [2021-10-07 16:33:42,423 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 51279.3ms TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2021-10-07 16:33:42,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4607 states. [2021-10-07 16:33:42,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4607 to 251. [2021-10-07 16:33:42,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 249 states have (on average 2.610441767068273) internal successors, (650), 250 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:42,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 650 transitions. [2021-10-07 16:33:42,485 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 650 transitions. Word has length 16 [2021-10-07 16:33:42,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:33:42,485 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 650 transitions. [2021-10-07 16:33:42,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:42,486 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 650 transitions. [2021-10-07 16:33:42,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:33:42,487 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:33:42,487 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:33:42,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-07 16:33:42,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:33:42,702 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 23 more)] === [2021-10-07 16:33:42,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:33:42,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1315013584, now seen corresponding path program 1 times [2021-10-07 16:33:42,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:33:42,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959330447] [2021-10-07 16:33:42,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:33:42,704 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:33:42,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:33:42,705 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:33:42,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-07 16:33:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:33:42,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:33:42,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:33:42,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:33:42,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:33:43,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:33:43,081 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:33:43,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959330447] [2021-10-07 16:33:43,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1959330447] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:33:43,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:33:43,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-07 16:33:43,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975920687] [2021-10-07 16:33:43,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:33:43,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:33:43,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:33:43,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:33:43,083 INFO L87 Difference]: Start difference. First operand 251 states and 650 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:43,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:33:43,179 INFO L93 Difference]: Finished difference Result 374 states and 946 transitions. [2021-10-07 16:33:43,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 16:33:43,179 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 16:33:43,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:33:43,182 INFO L225 Difference]: With dead ends: 374 [2021-10-07 16:33:43,182 INFO L226 Difference]: Without dead ends: 212 [2021-10-07 16:33:43,187 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 56.7ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:33:43,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-10-07 16:33:43,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2021-10-07 16:33:43,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 210 states have (on average 2.5142857142857142) internal successors, (528), 211 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:43,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 528 transitions. [2021-10-07 16:33:43,195 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 528 transitions. Word has length 19 [2021-10-07 16:33:43,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:33:43,195 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 528 transitions. [2021-10-07 16:33:43,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:43,195 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 528 transitions. [2021-10-07 16:33:43,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 16:33:43,197 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:33:43,197 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:33:43,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-07 16:33:43,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:33:43,410 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 23 more)] === [2021-10-07 16:33:43,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:33:43,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1063092620, now seen corresponding path program 1 times [2021-10-07 16:33:43,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:33:43,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819698346] [2021-10-07 16:33:43,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:33:43,412 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:33:43,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:33:43,413 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:33:43,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-07 16:33:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:33:43,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:33:43,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:33:43,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:33:43,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:33:43,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:33:43,816 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:33:43,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819698346] [2021-10-07 16:33:43,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [819698346] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:33:43,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:33:43,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-07 16:33:43,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694757842] [2021-10-07 16:33:43,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:33:43,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:33:43,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:33:43,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:33:43,818 INFO L87 Difference]: Start difference. First operand 212 states and 528 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:43,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:33:43,835 INFO L93 Difference]: Finished difference Result 236 states and 565 transitions. [2021-10-07 16:33:43,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:33:43,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 [2021-10-07 16:33:43,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:33:43,838 INFO L225 Difference]: With dead ends: 236 [2021-10-07 16:33:43,838 INFO L226 Difference]: Without dead ends: 216 [2021-10-07 16:33:43,839 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:33:43,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-10-07 16:33:43,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-10-07 16:33:43,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 214 states have (on average 2.439252336448598) internal successors, (522), 215 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:43,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 522 transitions. [2021-10-07 16:33:43,848 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 522 transitions. Word has length 23 [2021-10-07 16:33:43,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:33:43,848 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 522 transitions. [2021-10-07 16:33:43,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:33:43,848 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 522 transitions. [2021-10-07 16:33:43,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 16:33:43,849 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:33:43,849 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:33:43,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-07 16:33:44,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:33:44,053 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 23 more)] === [2021-10-07 16:33:44,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:33:44,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1784076619, now seen corresponding path program 1 times [2021-10-07 16:33:44,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:33:44,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202652724] [2021-10-07 16:33:44,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:33:44,054 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:33:44,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:33:44,056 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:33:44,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-07 16:33:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:33:44,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:33:44,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:33:44,598 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-07 16:33:44,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2021-10-07 16:33:44,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:33:44,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:33:45,323 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-07 16:33:45,324 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 92 treesize of output 70 [2021-10-07 16:34:04,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:34:04,325 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:34:04,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202652724] [2021-10-07 16:34:04,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202652724] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:34:04,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:34:04,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 16:34:04,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222915765] [2021-10-07 16:34:04,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 16:34:04,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:34:04,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 16:34:04,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:34:04,327 INFO L87 Difference]: Start difference. First operand 216 states and 522 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 17 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:34:09,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:34:09,359 INFO L93 Difference]: Finished difference Result 413 states and 995 transitions. [2021-10-07 16:34:09,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 16:34:09,360 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 17 states have internal predecessors, (46), 0 states have call successors, (0), 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 [2021-10-07 16:34:09,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:34:09,362 INFO L225 Difference]: With dead ends: 413 [2021-10-07 16:34:09,362 INFO L226 Difference]: Without dead ends: 365 [2021-10-07 16:34:09,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1678.8ms TimeCoverageRelationStatistics Valid=190, Invalid=740, Unknown=0, NotChecked=0, Total=930 [2021-10-07 16:34:09,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-10-07 16:34:09,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 275. [2021-10-07 16:34:09,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 273 states have (on average 2.4761904761904763) internal successors, (676), 274 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:34:09,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 676 transitions. [2021-10-07 16:34:09,371 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 676 transitions. Word has length 25 [2021-10-07 16:34:09,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:34:09,371 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 676 transitions. [2021-10-07 16:34:09,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 17 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:34:09,372 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 676 transitions. [2021-10-07 16:34:09,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 16:34:09,373 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:34:09,373 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:34:09,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-07 16:34:09,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:34:09,587 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 23 more)] === [2021-10-07 16:34:09,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:34:09,588 INFO L82 PathProgramCache]: Analyzing trace with hash 196126995, now seen corresponding path program 2 times [2021-10-07 16:34:09,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:34:09,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898040069] [2021-10-07 16:34:09,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:34:09,590 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:34:09,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:34:09,591 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:34:09,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-07 16:34:09,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:34:09,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:34:09,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 16:34:09,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:34:09,946 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 22 treesize of output 20 [2021-10-07 16:34:10,896 INFO L354 Elim1Store]: treesize reduction 1262, result has 5.7 percent of original size [2021-10-07 16:34:10,897 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 79 treesize of output 99 [2021-10-07 16:34:15,159 INFO L354 Elim1Store]: treesize reduction 463, result has 0.2 percent of original size [2021-10-07 16:34:15,160 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 131 treesize of output 39 [2021-10-07 16:34:15,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:34:15,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:34:24,859 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-07 16:34:24,881 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 12866023295 treesize of output 12278820748 Received shutdown request... [2021-10-07 16:45:56,272 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 16:45:56,273 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 16:45:56,327 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:45:56,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-07 16:45:56,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:45:56,541 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∨-2-2-1 context. [2021-10-07 16:45:56,543 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-07 16:45:56,544 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-07 16:45:56,544 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-07 16:45:56,544 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-07 16:45:56,545 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 16:45:56,545 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 16:45:56,545 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 16:45:56,545 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 16:45:56,545 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 16:45:56,545 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 16:45:56,546 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 16:45:56,550 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 16:45:56,550 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-07 16:45:56,550 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-07 16:45:56,550 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-07 16:45:56,550 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-07 16:45:56,551 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-07 16:45:56,551 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-07 16:45:56,552 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:45:56,552 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 16:45:56,552 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 16:45:56,552 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-07 16:45:56,552 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-07 16:45:56,553 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-07 16:45:56,553 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-07 16:45:56,553 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-07 16:45:56,563 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 16:45:56,563 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 16:45:56,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 04:45:56 BasicIcfg [2021-10-07 16:45:56,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 16:45:56,567 INFO L168 Benchmark]: Toolchain (without parser) took 855650.56 ms. Allocated memory was 159.4 MB in the beginning and 584.1 MB in the end (delta: 424.7 MB). Free memory was 134.0 MB in the beginning and 249.4 MB in the end (delta: -115.4 MB). Peak memory consumption was 368.4 MB. Max. memory is 8.0 GB. [2021-10-07 16:45:56,567 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 159.4 MB. Free memory is still 130.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 16:45:56,567 INFO L168 Benchmark]: CACSL2BoogieTranslator took 532.41 ms. Allocated memory is still 159.4 MB. Free memory was 133.5 MB in the beginning and 120.5 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-10-07 16:45:56,568 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.59 ms. Allocated memory is still 159.4 MB. Free memory was 120.5 MB in the beginning and 118.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:45:56,568 INFO L168 Benchmark]: Boogie Preprocessor took 75.16 ms. Allocated memory is still 159.4 MB. Free memory was 118.5 MB in the beginning and 116.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 16:45:56,569 INFO L168 Benchmark]: RCFGBuilder took 1240.94 ms. Allocated memory is still 159.4 MB. Free memory was 116.8 MB in the beginning and 123.0 MB in the end (delta: -6.2 MB). Peak memory consumption was 12.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:45:56,572 INFO L168 Benchmark]: TraceAbstraction took 853687.67 ms. Allocated memory was 159.4 MB in the beginning and 584.1 MB in the end (delta: 424.7 MB). Free memory was 122.4 MB in the beginning and 249.4 MB in the end (delta: -127.0 MB). Peak memory consumption was 356.2 MB. Max. memory is 8.0 GB. [2021-10-07 16:45:56,576 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 159.4 MB. Free memory is still 130.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 532.41 ms. Allocated memory is still 159.4 MB. Free memory was 133.5 MB in the beginning and 120.5 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 94.59 ms. Allocated memory is still 159.4 MB. Free memory was 120.5 MB in the beginning and 118.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 75.16 ms. Allocated memory is still 159.4 MB. Free memory was 118.5 MB in the beginning and 116.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1240.94 ms. Allocated memory is still 159.4 MB. Free memory was 116.8 MB in the beginning and 123.0 MB in the end (delta: -6.2 MB). Peak memory consumption was 12.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 853687.67 ms. Allocated memory was 159.4 MB in the beginning and 584.1 MB in the end (delta: 424.7 MB). Free memory was 122.4 MB in the beginning and 249.4 MB in the end (delta: -127.0 MB). Peak memory consumption was 356.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 20372.2ms, 156 PlacesBefore, 55 PlacesAfterwards, 157 TransitionsBefore, 48 TransitionsAfterwards, 1462 CoEnabledTransitionPairs, 7 FixpointIterations, 95 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 163 TotalNumberOfCompositions, 3584 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2413, positive: 2310, positive conditional: 0, positive unconditional: 2310, negative: 103, negative conditional: 0, negative unconditional: 103, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 984, positive: 959, positive conditional: 0, positive unconditional: 959, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 984, positive: 954, positive conditional: 0, positive unconditional: 954, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 30, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1356, positive: 860, positive conditional: 0, positive unconditional: 860, negative: 496, negative conditional: 0, negative unconditional: 496, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2413, positive: 1351, positive conditional: 0, positive unconditional: 1351, negative: 78, negative conditional: 0, negative unconditional: 78, unknown: 984, unknown conditional: 0, unknown unconditional: 984] , Statistics on independence cache: Total cache size (in pairs): 154, Positive cache size: 145, Positive conditional cache size: 0, Positive unconditional cache size: 145, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∨-2-2-1 context. - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∨-2-2-1 context. - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∨-2-2-1 context. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∨-2-2-1 context. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∨-2-2-1 context. - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∨-2-2-1 context. - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∨-2-2-1 context. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∨-2-2-1 context. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∨-2-2-1 context. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∨-2-2-1 context. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∨-2-2-1 context. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∨-2-2-1 context. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∨-2-2-1 context. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∨-2-2-1 context. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∨-2-2-1 context. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∨-2-2-1 context. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∨-2-2-1 context. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∨-2-2-1 context. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∨-2-2-1 context. - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∨-2-2-1 context. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∨-2-2-1 context. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∨-2-2-1 context. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-7-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∨-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 175 locations, 27 error locations. Started 1 CEGAR loops. OverallTime: 853506.2ms, OverallIterations: 19, TraceHistogramMax: 14, EmptinessCheckTime: 42.4ms, AutomataDifference: 74647.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 20493.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 764 SDtfs, 9304 SDslu, 4671 SDs, 0 SdLazy, 3530 SolverSat, 108 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 18646.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 306 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 64590.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=733occurred in iteration=9, InterpolantAutomatonStates: 129, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 536.3ms AutomataMinimizationTime, 18 MinimizatonAttempts, 9942 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 163.4ms SsaConstructionTime, 938.2ms SatisfiabilityAnalysisTime, 44771.9ms InterpolantComputationTime, 149 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 262 ConstructedInterpolants, 41 QuantifiedInterpolants, 4721 SizeOfPredicates, 133 NumberOfNonLiveVariables, 1313 ConjunctsInSsa, 157 ConjunctsInUnsatCore, 36 InterpolantComputations, 26 PerfectInterpolantSequences, 28/292 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown