/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem17_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:31:36,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:31:36,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:31:36,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:31:36,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:31:36,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:31:36,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:31:36,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:31:36,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:31:36,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:31:36,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:31:36,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:31:36,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:31:36,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:31:36,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:31:36,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:31:36,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:31:36,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:31:36,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:31:36,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:31:36,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:31:36,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:31:36,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:31:36,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:31:36,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:31:36,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:31:36,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:31:36,789 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:31:36,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:31:36,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:31:36,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:31:36,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:31:36,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:31:36,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:31:36,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:31:36,801 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:31:36,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:31:36,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:31:36,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:31:36,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:31:36,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:31:36,804 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 [2020-10-14 22:31:36,844 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:31:36,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:31:36,847 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:31:36,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:31:36,847 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:31:36,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:31:36,848 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:31:36,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:31:36,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:31:36,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:31:36,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:31:36,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:31:36,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:31:36,850 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:31:36,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:31:36,851 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:31:36,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:31:36,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:31:36,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:31:36,852 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:31:36,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:31:36,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:31:36,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:31:36,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:31:36,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:31:36,853 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:31:36,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:31:36,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:31:36,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:31:36,853 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:31:37,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:31:37,196 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:31:37,201 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:31:37,203 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:31:37,204 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:31:37,204 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label34.c [2020-10-14 22:31:37,288 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea7ac165b/a3cf3d74425347d9a9ef6edd785003d3/FLAG8c0973016 [2020-10-14 22:31:38,052 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:31:38,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label34.c [2020-10-14 22:31:38,087 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea7ac165b/a3cf3d74425347d9a9ef6edd785003d3/FLAG8c0973016 [2020-10-14 22:31:38,110 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea7ac165b/a3cf3d74425347d9a9ef6edd785003d3 [2020-10-14 22:31:38,122 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:31:38,125 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:31:38,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:31:38,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:31:38,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:31:38,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:31:38" (1/1) ... [2020-10-14 22:31:38,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2016f310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:38, skipping insertion in model container [2020-10-14 22:31:38,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:31:38" (1/1) ... [2020-10-14 22:31:38,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:31:38,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:31:39,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:31:39,637 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:31:40,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:31:40,121 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:31:40,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:40 WrapperNode [2020-10-14 22:31:40,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:31:40,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:31:40,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:31:40,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:31:40,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:40" (1/1) ... [2020-10-14 22:31:40,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:40" (1/1) ... [2020-10-14 22:31:40,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:40" (1/1) ... [2020-10-14 22:31:40,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:40" (1/1) ... [2020-10-14 22:31:40,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:40" (1/1) ... [2020-10-14 22:31:40,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:40" (1/1) ... [2020-10-14 22:31:40,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:40" (1/1) ... [2020-10-14 22:31:40,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:31:40,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:31:40,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:31:40,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:31:40,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:40" (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 [2020-10-14 22:31:40,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:31:40,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:31:40,484 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:31:40,484 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:31:40,484 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:31:40,485 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:31:40,485 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:31:40,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:31:40,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:31:40,485 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:31:40,486 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:31:40,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:31:40,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:31:49,341 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:31:49,341 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:31:49,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:31:49 BoogieIcfgContainer [2020-10-14 22:31:49,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:31:49,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:31:49,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:31:49,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:31:49,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:31:38" (1/3) ... [2020-10-14 22:31:49,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c76bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:31:49, skipping insertion in model container [2020-10-14 22:31:49,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:40" (2/3) ... [2020-10-14 22:31:49,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c76bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:31:49, skipping insertion in model container [2020-10-14 22:31:49,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:31:49" (3/3) ... [2020-10-14 22:31:49,374 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label34.c [2020-10-14 22:31:49,386 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:31:49,403 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:31:49,419 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:31:49,456 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:31:49,456 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:31:49,456 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:31:49,456 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:31:49,456 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:31:49,457 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:31:49,457 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:31:49,457 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:31:49,502 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:31:49,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 22:31:49,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:31:49,513 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] [2020-10-14 22:31:49,514 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:31:49,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:31:49,521 INFO L82 PathProgramCache]: Analyzing trace with hash -653265423, now seen corresponding path program 1 times [2020-10-14 22:31:49,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:31:49,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678525239] [2020-10-14 22:31:49,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:31:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:49,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:50,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:50,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 22:31:50,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:50,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-14 22:31:50,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:50,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:50,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:31:50,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:31:50,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 22:31:50,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:31:50,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:31:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:31:50,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:31:50,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:31:50,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:31:50,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:31:50,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 22:31:50,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:31:50,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:31:50,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:31:50,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:31:50,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:31:50,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:31:50,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:31:50,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678525239] [2020-10-14 22:31:50,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:31:50,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:31:50,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334014482] [2020-10-14 22:31:50,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:31:50,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:31:50,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:31:50,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:31:50,317 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 22:31:50,471 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2020-10-14 22:32:03,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:32:03,170 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-14 22:32:03,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:32:03,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-14 22:32:03,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:32:03,200 INFO L225 Difference]: With dead ends: 1692 [2020-10-14 22:32:03,201 INFO L226 Difference]: Without dead ends: 1012 [2020-10-14 22:32:03,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:32:03,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-14 22:32:03,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-14 22:32:03,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-14 22:32:03,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-14 22:32:03,369 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 25 [2020-10-14 22:32:03,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:32:03,369 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-14 22:32:03,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:32:03,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-14 22:32:03,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 22:32:03,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:32:03,380 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 22:32:03,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:32:03,381 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:32:03,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:32:03,383 INFO L82 PathProgramCache]: Analyzing trace with hash 837363719, now seen corresponding path program 1 times [2020-10-14 22:32:03,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:32:03,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070772778] [2020-10-14 22:32:03,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:32:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:03,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:03,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:04,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:04,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:04,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 22:32:04,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:32:04,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1341 [2020-10-14 22:32:04,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:04,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:04,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:32:04,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:32:04,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 22:32:04,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:32:04,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:32:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:04,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:04,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:04,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:32:04,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:04,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 22:32:04,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:04,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:04,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:32:04,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:32:04,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:32:04,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:04,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:32:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:04,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:05,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:05,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:05,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:32:05,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:32:05,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-14 22:32:05,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:05,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:32:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:32:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:32:05,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:05,267 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:32:05,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070772778] [2020-10-14 22:32:05,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:32:05,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:32:05,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128777501] [2020-10-14 22:32:05,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:32:05,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:32:05,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:32:05,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:32:05,274 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 7 states. [2020-10-14 22:32:18,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:32:18,269 INFO L93 Difference]: Finished difference Result 2480 states and 3699 transitions. [2020-10-14 22:32:18,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:32:18,278 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-14 22:32:18,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:32:18,288 INFO L225 Difference]: With dead ends: 2480 [2020-10-14 22:32:18,289 INFO L226 Difference]: Without dead ends: 1484 [2020-10-14 22:32:18,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:32:18,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2020-10-14 22:32:18,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1462. [2020-10-14 22:32:18,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1462 states. [2020-10-14 22:32:18,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 2034 transitions. [2020-10-14 22:32:18,363 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 2034 transitions. Word has length 96 [2020-10-14 22:32:18,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:32:18,363 INFO L479 AbstractCegarLoop]: Abstraction has 1462 states and 2034 transitions. [2020-10-14 22:32:18,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:32:18,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 2034 transitions. [2020-10-14 22:32:18,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 22:32:18,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:32:18,366 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 22:32:18,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:32:18,367 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:32:18,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:32:18,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1398395687, now seen corresponding path program 1 times [2020-10-14 22:32:18,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:32:18,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717841986] [2020-10-14 22:32:18,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:32:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:18,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:18,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:18,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 22:32:18,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:18,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 506 [2020-10-14 22:32:18,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:18,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:18,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:32:18,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:32:18,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 22:32:18,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:18,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:32:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:18,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:19,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:19,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:32:19,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:19,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:32:19,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:19,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:19,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:32:19,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:32:19,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:32:19,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:19,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:32:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:19,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:19,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:19,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:32:19,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:19,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 22:32:19,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:19,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:19,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:32:19,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:32:19,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:32:19,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:19,371 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:32:19,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717841986] [2020-10-14 22:32:19,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:32:19,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:32:19,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100717091] [2020-10-14 22:32:19,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:32:19,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:32:19,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:32:19,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:32:19,374 INFO L87 Difference]: Start difference. First operand 1462 states and 2034 transitions. Second operand 8 states. [2020-10-14 22:32:39,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:32:39,122 INFO L93 Difference]: Finished difference Result 3503 states and 5198 transitions. [2020-10-14 22:32:39,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:32:39,129 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2020-10-14 22:32:39,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:32:39,142 INFO L225 Difference]: With dead ends: 3503 [2020-10-14 22:32:39,142 INFO L226 Difference]: Without dead ends: 2480 [2020-10-14 22:32:39,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:32:39,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2020-10-14 22:32:39,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 2413. [2020-10-14 22:32:39,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2413 states. [2020-10-14 22:32:39,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 3260 transitions. [2020-10-14 22:32:39,218 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 3260 transitions. Word has length 99 [2020-10-14 22:32:39,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:32:39,219 INFO L479 AbstractCegarLoop]: Abstraction has 2413 states and 3260 transitions. [2020-10-14 22:32:39,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:32:39,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 3260 transitions. [2020-10-14 22:32:39,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-14 22:32:39,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:32:39,223 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:32:39,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:32:39,224 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:32:39,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:32:39,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1372290617, now seen corresponding path program 1 times [2020-10-14 22:32:39,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:32:39,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751307558] [2020-10-14 22:32:39,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:32:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:39,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:39,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:39,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:41,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:44,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:44,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:44,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 22:32:44,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:32:44,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 22:32:44,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:44,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:44,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:32:44,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:32:44,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-14 22:32:44,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:44,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:32:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:44,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:44,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:44,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:32:44,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:44,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 22:32:44,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:44,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:44,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:32:44,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:32:44,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:32:44,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:44,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:32:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:44,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:44,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:44,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:44,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:32:44,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:32:44,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-14 22:32:44,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:44,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:44,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:32:44,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:32:44,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 22:32:44,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:32:44,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 22:32:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:32:44,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:32:44,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:32:44,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 22:32:44,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:32:44,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 22:32:44,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:32:44,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:32:44,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:32:44,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:32:44,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 22:32:44,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:32:44,982 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 22:32:44,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751307558] [2020-10-14 22:32:44,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:32:44,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:32:44,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707226865] [2020-10-14 22:32:44,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:32:44,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:32:44,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:32:44,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:32:44,991 INFO L87 Difference]: Start difference. First operand 2413 states and 3260 transitions. Second operand 7 states. [2020-10-14 22:33:03,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:33:03,438 INFO L93 Difference]: Finished difference Result 6326 states and 8902 transitions. [2020-10-14 22:33:03,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:33:03,439 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2020-10-14 22:33:03,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:33:03,454 INFO L225 Difference]: With dead ends: 6326 [2020-10-14 22:33:03,455 INFO L226 Difference]: Without dead ends: 3442 [2020-10-14 22:33:03,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:33:03,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3442 states. [2020-10-14 22:33:03,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3442 to 3324. [2020-10-14 22:33:03,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3324 states. [2020-10-14 22:33:03,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3324 states to 3324 states and 4066 transitions. [2020-10-14 22:33:03,549 INFO L78 Accepts]: Start accepts. Automaton has 3324 states and 4066 transitions. Word has length 169 [2020-10-14 22:33:03,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:33:03,549 INFO L479 AbstractCegarLoop]: Abstraction has 3324 states and 4066 transitions. [2020-10-14 22:33:03,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:33:03,550 INFO L276 IsEmpty]: Start isEmpty. Operand 3324 states and 4066 transitions. [2020-10-14 22:33:03,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-14 22:33:03,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:33:03,553 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:33:03,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:33:03,553 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:33:03,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:33:03,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1453621113, now seen corresponding path program 1 times [2020-10-14 22:33:03,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:33:03,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929966609] [2020-10-14 22:33:03,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:33:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:03,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:03,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:04,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:04,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 22:33:04,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:33:04,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 830 [2020-10-14 22:33:04,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:04,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:04,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:33:04,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:33:04,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 22:33:04,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:04,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:33:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:04,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:04,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:04,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:33:04,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:04,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:33:04,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:04,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:04,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:33:04,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:33:04,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:33:04,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:04,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:33:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:04,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:04,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:04,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:33:04,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:04,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 22:33:04,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:04,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:33:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:33:04,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:33:04,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:04,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:33:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:04,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:04,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:04,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 22:33:04,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:04,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 22:33:04,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:04,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:04,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:33:04,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:33:04,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 22:33:04,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:05,006 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:33:05,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929966609] [2020-10-14 22:33:05,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:33:05,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:33:05,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566693741] [2020-10-14 22:33:05,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:33:05,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:33:05,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:33:05,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:33:05,009 INFO L87 Difference]: Start difference. First operand 3324 states and 4066 transitions. Second operand 7 states. [2020-10-14 22:33:21,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:33:21,194 INFO L93 Difference]: Finished difference Result 8052 states and 10335 transitions. [2020-10-14 22:33:21,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:33:21,199 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-10-14 22:33:21,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:33:21,230 INFO L225 Difference]: With dead ends: 8052 [2020-10-14 22:33:21,230 INFO L226 Difference]: Without dead ends: 5169 [2020-10-14 22:33:21,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:33:21,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5169 states. [2020-10-14 22:33:21,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5169 to 5150. [2020-10-14 22:33:21,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5150 states. [2020-10-14 22:33:21,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5150 states to 5150 states and 6316 transitions. [2020-10-14 22:33:21,384 INFO L78 Accepts]: Start accepts. Automaton has 5150 states and 6316 transitions. Word has length 182 [2020-10-14 22:33:21,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:33:21,386 INFO L479 AbstractCegarLoop]: Abstraction has 5150 states and 6316 transitions. [2020-10-14 22:33:21,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:33:21,387 INFO L276 IsEmpty]: Start isEmpty. Operand 5150 states and 6316 transitions. [2020-10-14 22:33:21,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-14 22:33:21,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:33:21,390 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:33:21,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:33:21,391 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:33:21,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:33:21,392 INFO L82 PathProgramCache]: Analyzing trace with hash -277136359, now seen corresponding path program 1 times [2020-10-14 22:33:21,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:33:21,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829890838] [2020-10-14 22:33:21,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:33:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:21,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:21,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:23,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:24,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:25,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:25,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-14 22:33:25,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:33:25,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3993 [2020-10-14 22:33:25,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:25,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:25,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:33:25,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:33:25,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 22:33:25,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:33:25,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:33:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:25,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:25,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:25,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:33:25,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:25,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:33:25,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:25,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:25,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:33:25,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:33:25,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:33:25,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:25,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:33:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:25,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:25,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:25,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:33:25,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:25,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-14 22:33:25,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:25,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:25,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:33:25,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:33:25,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:33:25,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:25,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:33:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:33:25,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:33:26,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:33:26,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:33:26,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:33:26,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 22:33:26,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:33:26,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:33:26,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:33:26,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:33:26,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:33:26,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:33:26,288 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 40 proven. 70 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:33:26,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829890838] [2020-10-14 22:33:26,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:33:26,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 22:33:26,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566093293] [2020-10-14 22:33:26,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:33:26,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:33:26,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:33:26,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:33:26,291 INFO L87 Difference]: Start difference. First operand 5150 states and 6316 transitions. Second operand 10 states. [2020-10-14 22:34:03,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:34:03,345 INFO L93 Difference]: Finished difference Result 14093 states and 17949 transitions. [2020-10-14 22:34:03,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 22:34:03,350 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 187 [2020-10-14 22:34:03,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:34:03,388 INFO L225 Difference]: With dead ends: 14093 [2020-10-14 22:34:03,388 INFO L226 Difference]: Without dead ends: 8941 [2020-10-14 22:34:03,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=160, Invalid=542, Unknown=0, NotChecked=0, Total=702 [2020-10-14 22:34:03,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8941 states. [2020-10-14 22:34:03,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8941 to 8410. [2020-10-14 22:34:03,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8410 states. [2020-10-14 22:34:03,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8410 states to 8410 states and 10522 transitions. [2020-10-14 22:34:03,598 INFO L78 Accepts]: Start accepts. Automaton has 8410 states and 10522 transitions. Word has length 187 [2020-10-14 22:34:03,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:34:03,600 INFO L479 AbstractCegarLoop]: Abstraction has 8410 states and 10522 transitions. [2020-10-14 22:34:03,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:34:03,600 INFO L276 IsEmpty]: Start isEmpty. Operand 8410 states and 10522 transitions. [2020-10-14 22:34:03,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-14 22:34:03,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:34:03,603 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:34:03,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:34:03,604 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:34:03,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:34:03,604 INFO L82 PathProgramCache]: Analyzing trace with hash -439479090, now seen corresponding path program 1 times [2020-10-14 22:34:03,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:34:03,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72576077] [2020-10-14 22:34:03,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:34:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:03,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:03,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:03,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:08,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:08,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-14 22:34:08,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:34:08,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4829 [2020-10-14 22:34:08,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:08,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:08,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:34:08,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:34:08,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:34:08,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:08,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:34:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:08,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:08,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:08,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:34:08,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:08,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:34:08,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:08,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:08,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:34:08,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:34:08,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:34:08,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:08,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:34:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:08,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:08,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:08,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:34:08,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:08,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 22:34:08,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:08,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:08,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:34:08,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:34:08,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:34:08,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:08,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:34:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:08,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:08,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:08,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:08,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:34:08,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:34:08,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-14 22:34:08,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:08,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:08,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:34:08,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:34:08,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:34:08,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:09,031 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 22:34:09,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72576077] [2020-10-14 22:34:09,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:34:09,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:34:09,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750065867] [2020-10-14 22:34:09,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:34:09,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:34:09,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:34:09,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:34:09,036 INFO L87 Difference]: Start difference. First operand 8410 states and 10522 transitions. Second operand 6 states. [2020-10-14 22:34:22,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:34:22,381 INFO L93 Difference]: Finished difference Result 16400 states and 21050 transitions. [2020-10-14 22:34:22,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:34:22,384 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 198 [2020-10-14 22:34:22,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:34:22,430 INFO L225 Difference]: With dead ends: 16400 [2020-10-14 22:34:22,430 INFO L226 Difference]: Without dead ends: 8864 [2020-10-14 22:34:22,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:34:22,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8864 states. [2020-10-14 22:34:22,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8864 to 8852. [2020-10-14 22:34:22,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8852 states. [2020-10-14 22:34:22,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8852 states to 8852 states and 11379 transitions. [2020-10-14 22:34:22,640 INFO L78 Accepts]: Start accepts. Automaton has 8852 states and 11379 transitions. Word has length 198 [2020-10-14 22:34:22,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:34:22,641 INFO L479 AbstractCegarLoop]: Abstraction has 8852 states and 11379 transitions. [2020-10-14 22:34:22,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:34:22,642 INFO L276 IsEmpty]: Start isEmpty. Operand 8852 states and 11379 transitions. [2020-10-14 22:34:22,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-14 22:34:22,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:34:22,647 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:34:22,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:34:22,648 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:34:22,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:34:22,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1102889431, now seen corresponding path program 1 times [2020-10-14 22:34:22,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:34:22,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10075407] [2020-10-14 22:34:22,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:34:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:22,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:23,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:23,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:24,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:27,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:27,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-14 22:34:27,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:34:27,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 22:34:27,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:27,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:27,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:34:27,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:34:27,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-14 22:34:27,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:27,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:34:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:27,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:27,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:27,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:34:27,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:27,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 22:34:27,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:27,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:27,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:34:27,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:34:27,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:34:27,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:34:27,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:34:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:27,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:28,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:28,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:34:28,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:28,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-14 22:34:28,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:28,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:28,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:34:28,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:34:28,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:34:28,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:34:28,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:34:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:28,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:28,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:28,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 22:34:28,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:28,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 22:34:28,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:28,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:28,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:34:28,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:34:28,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 22:34:28,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:34:28,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-14 22:34:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:28,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:28,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:28,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:34:28,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:28,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-14 22:34:28,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:28,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:28,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:34:28,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 22:34:28,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:34:28,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:28,771 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 130 proven. 145 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 22:34:28,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10075407] [2020-10-14 22:34:28,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:34:28,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 22:34:28,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666231521] [2020-10-14 22:34:28,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:34:28,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:34:28,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:34:28,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:34:28,775 INFO L87 Difference]: Start difference. First operand 8852 states and 11379 transitions. Second operand 10 states. [2020-10-14 22:34:28,929 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-10-14 22:34:48,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:34:48,212 INFO L93 Difference]: Finished difference Result 22577 states and 30279 transitions. [2020-10-14 22:34:48,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 22:34:48,216 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 265 [2020-10-14 22:34:48,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:34:48,258 INFO L225 Difference]: With dead ends: 22577 [2020-10-14 22:34:48,259 INFO L226 Difference]: Without dead ends: 13720 [2020-10-14 22:34:48,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2020-10-14 22:34:48,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13720 states. [2020-10-14 22:34:48,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13720 to 13531. [2020-10-14 22:34:48,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13531 states. [2020-10-14 22:34:48,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13531 states to 13531 states and 16957 transitions. [2020-10-14 22:34:48,569 INFO L78 Accepts]: Start accepts. Automaton has 13531 states and 16957 transitions. Word has length 265 [2020-10-14 22:34:48,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:34:48,570 INFO L479 AbstractCegarLoop]: Abstraction has 13531 states and 16957 transitions. [2020-10-14 22:34:48,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:34:48,570 INFO L276 IsEmpty]: Start isEmpty. Operand 13531 states and 16957 transitions. [2020-10-14 22:34:48,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-14 22:34:48,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:34:48,575 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:34:48,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:34:48,575 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:34:48,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:34:48,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1490559634, now seen corresponding path program 1 times [2020-10-14 22:34:48,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:34:48,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142100178] [2020-10-14 22:34:48,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:34:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:48,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:48,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:50,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:50,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:50,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:51,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:53,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:53,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:34:53,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 22:34:53,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 22:34:53,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:53,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:53,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:34:53,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:34:53,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-14 22:34:53,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:34:53,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:34:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:53,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:53,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:53,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:34:53,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:53,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:34:53,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:53,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:53,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:34:53,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:34:53,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:34:53,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:34:53,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:34:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:53,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:53,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:53,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:34:53,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:53,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 22:34:53,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:53,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:53,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:34:53,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:34:53,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:34:53,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:34:54,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:34:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:54,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:54,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:54,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:34:54,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:54,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 22:34:54,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:54,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:54,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:34:54,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:34:54,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:34:54,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:34:54,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:34:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:34:54,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:34:54,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:34:54,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:34:54,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:34:54,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 22:34:54,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:34:54,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:34:54,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:34:54,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:34:54,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:34:54,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:34:54,383 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 203 proven. 12 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 22:34:54,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142100178] [2020-10-14 22:34:54,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:34:54,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 22:34:54,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655148322] [2020-10-14 22:34:54,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:34:54,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:34:54,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:34:54,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:34:54,386 INFO L87 Difference]: Start difference. First operand 13531 states and 16957 transitions. Second operand 10 states. [2020-10-14 22:35:02,646 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2020-10-14 22:35:20,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:35:20,149 INFO L93 Difference]: Finished difference Result 31250 states and 40364 transitions. [2020-10-14 22:35:20,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 22:35:20,152 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 273 [2020-10-14 22:35:20,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:35:20,219 INFO L225 Difference]: With dead ends: 31250 [2020-10-14 22:35:20,219 INFO L226 Difference]: Without dead ends: 18151 [2020-10-14 22:35:20,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-14 22:35:20,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18151 states. [2020-10-14 22:35:20,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18151 to 17963. [2020-10-14 22:35:20,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17963 states. [2020-10-14 22:35:20,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17963 states to 17963 states and 21950 transitions. [2020-10-14 22:35:20,630 INFO L78 Accepts]: Start accepts. Automaton has 17963 states and 21950 transitions. Word has length 273 [2020-10-14 22:35:20,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:35:20,631 INFO L479 AbstractCegarLoop]: Abstraction has 17963 states and 21950 transitions. [2020-10-14 22:35:20,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:35:20,631 INFO L276 IsEmpty]: Start isEmpty. Operand 17963 states and 21950 transitions. [2020-10-14 22:35:20,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-14 22:35:20,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:35:20,640 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:35:20,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:35:20,641 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:35:20,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:35:20,642 INFO L82 PathProgramCache]: Analyzing trace with hash 856855676, now seen corresponding path program 1 times [2020-10-14 22:35:20,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:35:20,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657999186] [2020-10-14 22:35:20,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:35:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:20,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:21,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:21,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:22,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:24,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:24,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 22:35:24,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:35:24,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3342 [2020-10-14 22:35:24,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:24,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:24,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:35:24,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:35:24,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:35:24,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:35:24,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:35:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:24,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:24,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:24,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:35:24,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:24,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:35:24,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:24,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:24,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:35:24,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:35:24,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:35:24,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:35:24,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:35:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:24,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:24,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:24,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:35:24,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:24,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 22:35:24,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:24,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:24,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:35:24,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:35:24,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:35:24,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:35:24,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:35:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:24,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:24,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:24,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 22:35:24,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:24,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 22:35:24,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:24,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:24,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:35:24,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:35:24,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:35:24,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:35:24,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 22:35:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:35:24,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:35:24,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:35:24,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:35:24,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:35:24,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 22:35:24,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:35:24,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:35:24,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:35:24,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 22:35:24,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:35:24,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:35:24,758 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 142 proven. 74 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 22:35:24,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657999186] [2020-10-14 22:35:24,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:35:24,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:35:24,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851674480] [2020-10-14 22:35:24,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:35:24,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:35:24,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:35:24,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:35:24,761 INFO L87 Difference]: Start difference. First operand 17963 states and 21950 transitions. Second operand 7 states.