/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=NARROWEST --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 -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:49:51,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:49:51,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:49:51,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:49:51,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:49:51,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:49:51,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:49:51,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:49:51,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:49:51,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:49:51,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:49:51,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:49:51,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:49:51,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:49:51,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:49:51,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:49:51,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:49:51,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:49:51,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:49:51,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:49:51,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:49:51,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:49:51,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:49:51,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:49:51,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:49:51,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:49:51,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:49:51,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:49:51,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:49:51,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:49:51,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:49:51,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:49:51,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:49:51,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:49:51,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:49:51,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:49:51,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:49:51,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:49:51,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:49:51,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:49:51,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:49:51,749 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 [2020-10-13 06:49:51,771 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:49:51,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:49:51,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:49:51,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:49:51,773 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:49:51,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:49:51,774 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:49:51,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:49:51,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:49:51,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:49:51,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:49:51,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:49:51,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:49:51,775 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:49:51,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:49:51,775 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:49:51,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:49:51,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:49:51,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:49:51,776 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:49:51,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:49:51,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:49:51,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:49:51,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:49:51,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:49:51,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:49:51,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:49:51,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:49:51,778 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:49:51,778 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 06:49:52,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:49:52,109 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:49:52,112 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:49:52,114 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:49:52,114 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:49:52,115 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label20.c [2020-10-13 06:49:52,176 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b465279f8/1e1d88ee683a40f9ba5b9e71f1875ac0/FLAGd791d33ae [2020-10-13 06:49:53,072 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:49:53,073 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label20.c [2020-10-13 06:49:53,121 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b465279f8/1e1d88ee683a40f9ba5b9e71f1875ac0/FLAGd791d33ae [2020-10-13 06:49:53,558 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b465279f8/1e1d88ee683a40f9ba5b9e71f1875ac0 [2020-10-13 06:49:53,568 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:49:53,570 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:49:53,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:49:53,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:49:53,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:49:53,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:49:53" (1/1) ... [2020-10-13 06:49:53,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6266eb80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:53, skipping insertion in model container [2020-10-13 06:49:53,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:49:53" (1/1) ... [2020-10-13 06:49:53,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:49:53,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:49:56,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:49:56,377 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:49:57,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:49:57,528 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:49:57,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:57 WrapperNode [2020-10-13 06:49:57,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:49:57,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:49:57,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:49:57,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:49:57,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:57" (1/1) ... [2020-10-13 06:49:57,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:57" (1/1) ... [2020-10-13 06:49:57,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:57" (1/1) ... [2020-10-13 06:49:57,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:57" (1/1) ... [2020-10-13 06:49:57,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:57" (1/1) ... [2020-10-13 06:49:57,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:57" (1/1) ... [2020-10-13 06:49:57,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:57" (1/1) ... [2020-10-13 06:49:58,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:49:58,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:49:58,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:49:58,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:49:58,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:57" (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 [2020-10-13 06:49:58,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:49:58,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:49:58,187 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:49:58,187 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 06:49:58,187 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 06:49:58,189 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 06:49:58,189 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 06:49:58,190 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-13 06:49:58,190 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-13 06:49:58,191 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-13 06:49:58,191 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:49:58,191 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:49:58,191 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 06:49:58,191 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 06:49:58,191 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 06:49:58,192 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 06:49:58,193 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-13 06:49:58,193 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-13 06:49:58,193 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-13 06:49:58,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:49:58,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:49:58,194 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:49:58,194 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:49:58,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:49:58,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:50:06,533 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:50:06,534 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:50:06,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:50:06 BoogieIcfgContainer [2020-10-13 06:50:06,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:50:06,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:50:06,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:50:06,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:50:06,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:49:53" (1/3) ... [2020-10-13 06:50:06,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66240751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:50:06, skipping insertion in model container [2020-10-13 06:50:06,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:57" (2/3) ... [2020-10-13 06:50:06,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66240751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:50:06, skipping insertion in model container [2020-10-13 06:50:06,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:50:06" (3/3) ... [2020-10-13 06:50:06,563 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label20.c [2020-10-13 06:50:06,574 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:50:06,586 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:50:06,601 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:50:06,637 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:50:06,637 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:50:06,637 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:50:06,637 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:50:06,638 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:50:06,638 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:50:06,638 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:50:06,638 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:50:06,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-13 06:50:06,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1705 [2020-10-13 06:50:06,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:50:06,838 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, 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, 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, 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, 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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, 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, 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, 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, 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] [2020-10-13 06:50:06,839 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:50:06,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:50:06,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1734449609, now seen corresponding path program 1 times [2020-10-13 06:50:06,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:50:06,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936183098] [2020-10-13 06:50:06,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:50:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:50:08,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:50:13,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:50:13,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1726 [2020-10-13 06:50:13,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:50:13,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5188 [2020-10-13 06:50:13,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:50:13,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 06:50:13,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:50:13,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1720 [2020-10-13 06:50:13,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 06:50:14,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:50:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:50:14,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:50:14,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:50:14,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:50:14,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:50:14,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:50:14,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:50:14,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:50:14,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:50:14,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:50:14,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:50:16,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:50:16,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936183098] [2020-10-13 06:50:16,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:50:16,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 06:50:16,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464541070] [2020-10-13 06:50:16,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 06:50:16,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:50:16,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 06:50:16,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 06:50:16,821 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 4 states. [2020-10-13 06:50:33,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:50:33,507 INFO L93 Difference]: Finished difference Result 6311 states and 11851 transitions. [2020-10-13 06:50:33,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:50:33,514 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1704 [2020-10-13 06:50:33,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:50:33,566 INFO L225 Difference]: With dead ends: 6311 [2020-10-13 06:50:33,566 INFO L226 Difference]: Without dead ends: 4025 [2020-10-13 06:50:33,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:50:33,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4025 states. [2020-10-13 06:50:33,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3996. [2020-10-13 06:50:33,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3996 states. [2020-10-13 06:50:33,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3996 states to 3996 states and 6427 transitions. [2020-10-13 06:50:33,789 INFO L78 Accepts]: Start accepts. Automaton has 3996 states and 6427 transitions. Word has length 1704 [2020-10-13 06:50:33,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:50:33,795 INFO L479 AbstractCegarLoop]: Abstraction has 3996 states and 6427 transitions. [2020-10-13 06:50:33,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 06:50:33,795 INFO L276 IsEmpty]: Start isEmpty. Operand 3996 states and 6427 transitions. [2020-10-13 06:50:33,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1714 [2020-10-13 06:50:33,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:50:33,874 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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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, 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, 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, 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, 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] [2020-10-13 06:50:33,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:50:33,875 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:50:33,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:50:33,876 INFO L82 PathProgramCache]: Analyzing trace with hash -677987970, now seen corresponding path program 1 times [2020-10-13 06:50:33,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:50:33,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579664601] [2020-10-13 06:50:33,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:50:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:50:34,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:50:36,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:50:39,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:50:39,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1737 [2020-10-13 06:50:39,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:50:39,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5189 [2020-10-13 06:50:39,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:50:39,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:50:39,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:50:39,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:50:39,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 06:50:40,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:50:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:50:40,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:50:40,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:50:40,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:50:40,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:50:40,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:50:40,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:50:40,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:50:40,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:50:40,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:50:40,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:50:40,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:50:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:50:40,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:50:40,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:50:40,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 06:50:40,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:50:40,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 06:50:40,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:50:40,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:50:40,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:50:40,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 06:50:40,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:50:42,075 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:50:42,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [579664601] [2020-10-13 06:50:42,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:50:42,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 06:50:42,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671789477] [2020-10-13 06:50:42,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:50:42,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:50:42,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:50:42,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:50:42,082 INFO L87 Difference]: Start difference. First operand 3996 states and 6427 transitions. Second operand 7 states. [2020-10-13 06:51:05,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:51:05,461 INFO L93 Difference]: Finished difference Result 11830 states and 19173 transitions. [2020-10-13 06:51:05,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:51:05,465 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1713 [2020-10-13 06:51:05,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:51:05,512 INFO L225 Difference]: With dead ends: 11830 [2020-10-13 06:51:05,512 INFO L226 Difference]: Without dead ends: 7840 [2020-10-13 06:51:05,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:51:05,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7840 states. [2020-10-13 06:51:05,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7840 to 7660. [2020-10-13 06:51:05,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7660 states. [2020-10-13 06:51:05,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7660 states to 7660 states and 11091 transitions. [2020-10-13 06:51:05,799 INFO L78 Accepts]: Start accepts. Automaton has 7660 states and 11091 transitions. Word has length 1713 [2020-10-13 06:51:05,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:51:05,799 INFO L479 AbstractCegarLoop]: Abstraction has 7660 states and 11091 transitions. [2020-10-13 06:51:05,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:51:05,800 INFO L276 IsEmpty]: Start isEmpty. Operand 7660 states and 11091 transitions. [2020-10-13 06:51:05,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1716 [2020-10-13 06:51:05,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:51:05,861 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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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, 1] [2020-10-13 06:51:05,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:51:05,861 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:51:05,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:51:05,862 INFO L82 PathProgramCache]: Analyzing trace with hash 801712474, now seen corresponding path program 1 times [2020-10-13 06:51:05,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:51:05,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694771424] [2020-10-13 06:51:05,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:51:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:51:06,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:51:07,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:51:11,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:51:11,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1739 [2020-10-13 06:51:11,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:51:11,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5104 [2020-10-13 06:51:11,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:51:11,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:51:11,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:51:11,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:51:11,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:51:12,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:51:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:51:12,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:51:12,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:51:12,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:51:12,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:51:12,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 06:51:12,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:51:12,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:51:12,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:51:12,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:51:12,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:51:12,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:51:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:51:12,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:51:12,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:51:12,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:51:12,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:51:12,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 06:51:12,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:51:12,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:51:12,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:51:12,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:51:12,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:51:13,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:51:13,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694771424] [2020-10-13 06:51:13,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:51:13,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 06:51:13,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199452173] [2020-10-13 06:51:13,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:51:13,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:51:13,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:51:13,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:51:13,570 INFO L87 Difference]: Start difference. First operand 7660 states and 11091 transitions. Second operand 8 states. [2020-10-13 06:51:50,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:51:50,985 INFO L93 Difference]: Finished difference Result 30815 states and 46160 transitions. [2020-10-13 06:51:50,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 06:51:50,986 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1715 [2020-10-13 06:51:50,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:51:51,096 INFO L225 Difference]: With dead ends: 30815 [2020-10-13 06:51:51,097 INFO L226 Difference]: Without dead ends: 23161 [2020-10-13 06:51:51,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-13 06:51:51,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23161 states. [2020-10-13 06:51:51,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23161 to 22779. [2020-10-13 06:51:51,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22779 states. [2020-10-13 06:51:51,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22779 states to 22779 states and 29166 transitions. [2020-10-13 06:51:51,743 INFO L78 Accepts]: Start accepts. Automaton has 22779 states and 29166 transitions. Word has length 1715 [2020-10-13 06:51:51,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:51:51,744 INFO L479 AbstractCegarLoop]: Abstraction has 22779 states and 29166 transitions. [2020-10-13 06:51:51,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:51:51,750 INFO L276 IsEmpty]: Start isEmpty. Operand 22779 states and 29166 transitions. [2020-10-13 06:51:51,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1727 [2020-10-13 06:51:51,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:51:51,847 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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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, 1] [2020-10-13 06:51:51,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:51:51,848 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:51:51,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:51:51,849 INFO L82 PathProgramCache]: Analyzing trace with hash -2082472534, now seen corresponding path program 1 times [2020-10-13 06:51:51,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:51:51,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249203751] [2020-10-13 06:51:51,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:51:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:51:52,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:51:53,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:51:53,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:51:57,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:51:57,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1750 [2020-10-13 06:51:57,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:51:57,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5100 [2020-10-13 06:51:57,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:51:57,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:51:57,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:51:57,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 06:51:57,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:51:57,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:51:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:51:57,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:51:57,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:51:57,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:51:57,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:51:57,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:51:57,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:51:57,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:51:57,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:51:57,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:51:57,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:51:57,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:51:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:51:57,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:51:57,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:51:57,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 06:51:57,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:51:57,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 06:51:57,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:51:57,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:51:57,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:51:57,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 06:51:57,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:51:59,228 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:51:59,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249203751] [2020-10-13 06:51:59,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:51:59,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 06:51:59,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269843178] [2020-10-13 06:51:59,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:51:59,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:51:59,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:51:59,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:51:59,232 INFO L87 Difference]: Start difference. First operand 22779 states and 29166 transitions. Second operand 8 states. [2020-10-13 06:52:34,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:52:34,394 INFO L93 Difference]: Finished difference Result 79390 states and 106222 transitions. [2020-10-13 06:52:34,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 06:52:34,395 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1726 [2020-10-13 06:52:34,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:52:34,562 INFO L225 Difference]: With dead ends: 79390 [2020-10-13 06:52:34,562 INFO L226 Difference]: Without dead ends: 56617 [2020-10-13 06:52:34,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:52:34,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56617 states. [2020-10-13 06:52:35,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56617 to 56331. [2020-10-13 06:52:35,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56331 states. [2020-10-13 06:52:35,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56331 states to 56331 states and 72764 transitions. [2020-10-13 06:52:35,855 INFO L78 Accepts]: Start accepts. Automaton has 56331 states and 72764 transitions. Word has length 1726 [2020-10-13 06:52:35,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:52:35,856 INFO L479 AbstractCegarLoop]: Abstraction has 56331 states and 72764 transitions. [2020-10-13 06:52:35,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:52:35,856 INFO L276 IsEmpty]: Start isEmpty. Operand 56331 states and 72764 transitions. [2020-10-13 06:52:36,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1770 [2020-10-13 06:52:36,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:52:36,046 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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] [2020-10-13 06:52:36,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:52:36,048 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:52:36,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:52:36,049 INFO L82 PathProgramCache]: Analyzing trace with hash 921521682, now seen corresponding path program 1 times [2020-10-13 06:52:36,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:52:36,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202087554] [2020-10-13 06:52:36,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:52:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:52:36,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:52:36,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:52:41,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:52:41,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1793 [2020-10-13 06:52:41,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:52:41,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 06:52:41,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:52:41,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:52:41,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:52:41,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 06:52:41,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:52:41,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:52:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:52:41,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:52:41,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:52:41,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:52:41,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:52:41,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:52:41,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:52:41,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:52:41,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:52:41,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:52:41,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:52:41,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:52:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:52:41,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:52:41,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:52:41,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 06:52:41,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:52:41,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 06:52:41,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:52:41,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:52:41,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:52:41,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 06:52:41,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:52:42,714 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:52:42,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202087554] [2020-10-13 06:52:42,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:52:42,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 06:52:42,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348480065] [2020-10-13 06:52:42,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:52:42,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:52:42,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:52:42,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:52:42,718 INFO L87 Difference]: Start difference. First operand 56331 states and 72764 transitions. Second operand 7 states. [2020-10-13 06:53:06,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:53:06,020 INFO L93 Difference]: Finished difference Result 127988 states and 174510 transitions. [2020-10-13 06:53:06,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 06:53:06,021 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1769 [2020-10-13 06:53:06,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:53:06,203 INFO L225 Difference]: With dead ends: 127988 [2020-10-13 06:53:06,204 INFO L226 Difference]: Without dead ends: 71663 [2020-10-13 06:53:06,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:53:06,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71663 states. [2020-10-13 06:53:07,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71663 to 69456. [2020-10-13 06:53:07,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69456 states. [2020-10-13 06:53:07,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69456 states to 69456 states and 89947 transitions. [2020-10-13 06:53:07,500 INFO L78 Accepts]: Start accepts. Automaton has 69456 states and 89947 transitions. Word has length 1769 [2020-10-13 06:53:07,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:53:07,501 INFO L479 AbstractCegarLoop]: Abstraction has 69456 states and 89947 transitions. [2020-10-13 06:53:07,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:53:07,501 INFO L276 IsEmpty]: Start isEmpty. Operand 69456 states and 89947 transitions. [2020-10-13 06:53:07,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1858 [2020-10-13 06:53:07,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:53:07,666 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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] [2020-10-13 06:53:07,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:53:07,666 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:53:07,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:53:07,667 INFO L82 PathProgramCache]: Analyzing trace with hash 628324695, now seen corresponding path program 1 times [2020-10-13 06:53:07,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:53:07,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948275577] [2020-10-13 06:53:07,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:53:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:53:08,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:53:08,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:53:13,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:53:13,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1883 [2020-10-13 06:53:13,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:53:13,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5117 [2020-10-13 06:53:13,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:53:13,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 06:53:13,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-10-13 06:53:13,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1231 [2020-10-13 06:53:13,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:53:16,196 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-10-13 06:53:16,355 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-10-13 06:53:16,596 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 40 [2020-10-13 06:53:16,836 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 40 [2020-10-13 06:53:16,981 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2020-10-13 06:53:17,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:53:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:53:17,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:53:17,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:53:17,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:53:17,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:53:17,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:53:17,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:53:17,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:53:17,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:53:17,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:53:17,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:53:17,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:53:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:53:17,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:53:17,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:53:17,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 06:53:17,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:53:17,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 06:53:17,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:53:17,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:53:17,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:53:17,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:53:17,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:53:17,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 06:53:17,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:53:17,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:53:18,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:53:18,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 06:53:18,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:53:18,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 06:53:18,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:53:18,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:53:18,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:53:18,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 06:53:18,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0