/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/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:52:50,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:52:50,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:52:50,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:52:50,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:52:50,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:52:50,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:52:50,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:52:50,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:52:50,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:52:50,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:52:50,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:52:50,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:52:50,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:52:50,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:52:50,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:52:50,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:52:50,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:52:50,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:52:50,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:52:50,219 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:52:50,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:52:50,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:52:50,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:52:50,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:52:50,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:52:50,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:52:50,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:52:50,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:52:50,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:52:50,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:52:50,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:52:50,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:52:50,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:52:50,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:52:50,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:52:50,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:52:50,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:52:50,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:52:50,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:52:50,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:52:50,286 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 08:52:50,356 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:52:50,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:52:50,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:52:50,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:52:50,364 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:52:50,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:52:50,364 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:52:50,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:52:50,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:52:50,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:52:50,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:52:50,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:52:50,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:52:50,368 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:52:50,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:52:50,368 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:52:50,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:52:50,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:52:50,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:52:50,372 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:52:50,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:52:50,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:52:50,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:52:50,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:52:50,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:52:50,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:52:50,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:52:50,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:52:50,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:52:50,375 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:52:50,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:52:51,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:52:51,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:52:51,011 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:52:51,012 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:52:51,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label37.c [2020-10-29 08:52:51,105 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ff544676/035b71bbc24240498fa3fd9b177ea268/FLAG1dfe7a9bc [2020-10-29 08:52:52,498 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:52:52,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label37.c [2020-10-29 08:52:52,569 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ff544676/035b71bbc24240498fa3fd9b177ea268/FLAG1dfe7a9bc [2020-10-29 08:52:52,698 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ff544676/035b71bbc24240498fa3fd9b177ea268 [2020-10-29 08:52:52,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:52:52,713 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:52:52,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:52:52,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:52:52,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:52:52,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:52:52" (1/1) ... [2020-10-29 08:52:52,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28989fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:52:52, skipping insertion in model container [2020-10-29 08:52:52,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:52:52" (1/1) ... [2020-10-29 08:52:52,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:52:53,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:52:55,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:52:55,690 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:52:57,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:52:57,542 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:52:57,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:52:57 WrapperNode [2020-10-29 08:52:57,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:52:57,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:52:57,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:52:57,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:52:57,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:52:57" (1/1) ... [2020-10-29 08:52:57,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:52:57" (1/1) ... [2020-10-29 08:52:57,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:52:57" (1/1) ... [2020-10-29 08:52:57,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:52:57" (1/1) ... [2020-10-29 08:52:57,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:52:57" (1/1) ... [2020-10-29 08:52:58,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:52:57" (1/1) ... [2020-10-29 08:52:58,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:52:57" (1/1) ... [2020-10-29 08:52:58,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:52:58,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:52:58,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:52:58,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:52:58,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:52:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:52:58,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:52:58,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:52:58,373 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:52:58,373 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:52:58,373 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:52:58,373 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 08:52:58,374 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 08:52:58,374 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 08:52:58,374 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 08:52:58,374 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:52:58,375 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:52:58,375 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:52:58,375 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 08:52:58,376 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 08:52:58,376 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 08:52:58,377 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 08:52:58,377 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:52:58,377 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:52:58,378 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:52:58,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:52:58,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:52:58,378 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:52:58,378 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:52:58,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:52:58,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:52:58,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:52:58,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:52:58,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:52:58,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:53:13,893 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:53:13,894 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:53:13,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:53:13 BoogieIcfgContainer [2020-10-29 08:53:13,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:53:13,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:53:13,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:53:13,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:53:13,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:52:52" (1/3) ... [2020-10-29 08:53:13,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14038b23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:53:13, skipping insertion in model container [2020-10-29 08:53:13,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:52:57" (2/3) ... [2020-10-29 08:53:13,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14038b23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:53:13, skipping insertion in model container [2020-10-29 08:53:13,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:53:13" (3/3) ... [2020-10-29 08:53:13,912 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label37.c [2020-10-29 08:53:13,927 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:53:13,934 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:53:13,950 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:53:13,995 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:53:13,995 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:53:13,995 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:53:13,995 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:53:13,995 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:53:13,996 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:53:13,996 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:53:13,996 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:53:14,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states. [2020-10-29 08:53:14,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 08:53:14,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:53:14,064 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:53:14,065 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:53:14,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:53:14,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1924497902, now seen corresponding path program 1 times [2020-10-29 08:53:14,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:53:14,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856384886] [2020-10-29 08:53:14,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:53:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:53:14,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:53:14,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:53:14,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 08:53:14,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:53:14,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 641 [2020-10-29 08:53:14,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:53:14,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:53:14,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:53:14,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:53:14,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 08:53:14,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:53:15,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:53:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:53:15,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:53:15,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:53:15,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:53:15,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:53:15,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-29 08:53:15,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:53:15,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:53:15,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:53:15,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:53:15,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:53:15,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:53:15,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:53:15,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856384886] [2020-10-29 08:53:15,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:53:15,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:53:15,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910682538] [2020-10-29 08:53:15,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:53:15,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:53:15,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:53:15,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:53:15,429 INFO L87 Difference]: Start difference. First operand 1781 states. Second operand 4 states. [2020-10-29 08:53:48,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:53:48,761 INFO L93 Difference]: Finished difference Result 5100 states and 9572 transitions. [2020-10-29 08:53:48,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:53:48,765 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-29 08:53:48,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:53:48,815 INFO L225 Difference]: With dead ends: 5100 [2020-10-29 08:53:48,815 INFO L226 Difference]: Without dead ends: 3255 [2020-10-29 08:53:48,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:53:48,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3255 states. [2020-10-29 08:53:49,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3255 to 3209. [2020-10-29 08:53:49,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3209 states. [2020-10-29 08:53:49,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3209 states to 3209 states and 5178 transitions. [2020-10-29 08:53:49,156 INFO L78 Accepts]: Start accepts. Automaton has 3209 states and 5178 transitions. Word has length 45 [2020-10-29 08:53:49,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:53:49,160 INFO L481 AbstractCegarLoop]: Abstraction has 3209 states and 5178 transitions. [2020-10-29 08:53:49,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:53:49,161 INFO L276 IsEmpty]: Start isEmpty. Operand 3209 states and 5178 transitions. [2020-10-29 08:53:49,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 08:53:49,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:53:49,174 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:53:49,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:53:49,175 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:53:49,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:53:49,176 INFO L82 PathProgramCache]: Analyzing trace with hash 953177718, now seen corresponding path program 1 times [2020-10-29 08:53:49,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:53:49,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534772311] [2020-10-29 08:53:49,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:53:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:53:49,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:53:49,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:53:50,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:53:51,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:53:51,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 08:53:51,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:53:51,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1891 [2020-10-29 08:53:51,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:53:51,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:53:51,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:53:51,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:53:51,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 08:53:51,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:53:51,388 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:53:51,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:53:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:53:51,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:53:51,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:53:51,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:53:51,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:53:51,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 08:53:51,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:53:51,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:53:51,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:53:51,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:53:51,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:53:51,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:53:51,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:53:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:53:51,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:53:51,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:53:51,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:53:51,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:53:51,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:53:51,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-10-29 08:53:51,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:53:51,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:53:51,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:53:51,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:53:51,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:53:51,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:53:52,100 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 08:53:52,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534772311] [2020-10-29 08:53:52,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:53:52,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:53:52,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880291799] [2020-10-29 08:53:52,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:53:52,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:53:52,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:53:52,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:53:52,109 INFO L87 Difference]: Start difference. First operand 3209 states and 5178 transitions. Second operand 8 states. [2020-10-29 08:54:56,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:54:56,270 INFO L93 Difference]: Finished difference Result 12277 states and 20208 transitions. [2020-10-29 08:54:56,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 08:54:56,272 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 120 [2020-10-29 08:54:56,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:54:56,339 INFO L225 Difference]: With dead ends: 12277 [2020-10-29 08:54:56,339 INFO L226 Difference]: Without dead ends: 9074 [2020-10-29 08:54:56,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 08:54:56,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9074 states. [2020-10-29 08:54:56,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9074 to 9029. [2020-10-29 08:54:56,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9029 states. [2020-10-29 08:54:56,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9029 states to 9029 states and 13497 transitions. [2020-10-29 08:54:56,708 INFO L78 Accepts]: Start accepts. Automaton has 9029 states and 13497 transitions. Word has length 120 [2020-10-29 08:54:56,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:54:56,710 INFO L481 AbstractCegarLoop]: Abstraction has 9029 states and 13497 transitions. [2020-10-29 08:54:56,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:54:56,711 INFO L276 IsEmpty]: Start isEmpty. Operand 9029 states and 13497 transitions. [2020-10-29 08:54:56,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-29 08:54:56,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:54:56,722 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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] [2020-10-29 08:54:56,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:54:56,722 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:54:56,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:54:56,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1597808819, now seen corresponding path program 1 times [2020-10-29 08:54:56,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:54:56,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823061052] [2020-10-29 08:54:56,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:54:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:54:56,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:54:57,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:54:57,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:54:57,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-29 08:54:57,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:54:57,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 790 [2020-10-29 08:54:57,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:54:57,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:54:57,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:54:57,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:54:57,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-29 08:54:57,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:54:57,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:54:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:54:57,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:54:57,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:54:57,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:54:57,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:54:57,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:54:57,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:54:57,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:54:57,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:54:57,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:54:57,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:54:57,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:54:57,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:54:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:54:57,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:54:58,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:54:58,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 08:54:58,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:54:58,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-10-29 08:54:58,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:54:58,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:54:58,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:54:58,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:54:58,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 08:54:58,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:54:58,386 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:54:58,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823061052] [2020-10-29 08:54:58,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:54:58,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:54:58,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322823798] [2020-10-29 08:54:58,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:54:58,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:54:58,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:54:58,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:54:58,389 INFO L87 Difference]: Start difference. First operand 9029 states and 13497 transitions. Second operand 7 states. [2020-10-29 08:55:56,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:55:56,405 INFO L93 Difference]: Finished difference Result 27368 states and 42341 transitions. [2020-10-29 08:55:56,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:55:56,409 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2020-10-29 08:55:56,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:55:56,529 INFO L225 Difference]: With dead ends: 27368 [2020-10-29 08:55:56,530 INFO L226 Difference]: Without dead ends: 18345 [2020-10-29 08:55:56,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:55:56,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18345 states. [2020-10-29 08:55:57,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18345 to 18101. [2020-10-29 08:55:57,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18101 states. [2020-10-29 08:55:57,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18101 states to 18101 states and 24886 transitions. [2020-10-29 08:55:57,299 INFO L78 Accepts]: Start accepts. Automaton has 18101 states and 24886 transitions. Word has length 172 [2020-10-29 08:55:57,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:55:57,303 INFO L481 AbstractCegarLoop]: Abstraction has 18101 states and 24886 transitions. [2020-10-29 08:55:57,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:55:57,304 INFO L276 IsEmpty]: Start isEmpty. Operand 18101 states and 24886 transitions. [2020-10-29 08:55:57,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-29 08:55:57,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:55:57,315 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:55:57,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:55:57,316 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:55:57,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:55:57,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1282831725, now seen corresponding path program 1 times [2020-10-29 08:55:57,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:55:57,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733115473] [2020-10-29 08:55:57,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:55:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:55:57,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:55:57,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:55:57,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:55:59,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:56:00,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:56:02,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:56:02,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-29 08:56:02,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:56:02,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-29 08:56:02,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:56:02,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:56:02,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:56:02,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:56:02,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-29 08:56:02,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:56:02,654 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:56:02,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:56:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:56:02,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:56:02,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:56:02,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:56:02,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:56:02,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 08:56:02,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:56:02,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:56:02,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:56:02,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:56:02,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:56:02,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:56:02,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:56:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:56:02,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:56:02,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:56:02,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 08:56:02,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:56:02,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-29 08:56:02,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:56:02,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:56:02,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:56:02,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:56:02,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 08:56:02,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:56:02,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-29 08:56:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:56:03,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:56:03,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:56:03,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:56:03,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:56:03,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-29 08:56:03,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:56:03,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:56:03,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:56:03,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:56:03,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 08:56:03,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:56:03,311 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 75 proven. 67 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 08:56:03,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733115473] [2020-10-29 08:56:03,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:56:03,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:56:03,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165164471] [2020-10-29 08:56:03,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:56:03,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:56:03,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:56:03,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:56:03,314 INFO L87 Difference]: Start difference. First operand 18101 states and 24886 transitions. Second operand 8 states. [2020-10-29 08:56:03,466 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 68