/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/Problem19_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:01:03,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:01:03,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:01:03,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:01:03,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:01:03,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:01:03,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:01:03,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:01:03,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:01:03,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:01:03,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:01:03,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:01:03,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:01:03,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:01:03,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:01:03,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:01:03,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:01:03,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:01:03,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:01:03,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:01:03,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:01:03,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:01:03,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:01:03,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:01:03,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:01:03,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:01:03,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:01:03,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:01:03,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:01:03,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:01:03,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:01:03,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:01:03,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:01:03,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:01:03,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:01:03,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:01:03,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:01:03,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:01:03,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:01:03,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:01:03,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:01:03,169 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 23:01:03,208 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:01:03,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:01:03,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:01:03,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:01:03,211 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:01:03,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:01:03,211 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:01:03,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:01:03,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:01:03,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:01:03,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:01:03,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:01:03,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:01:03,214 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:01:03,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:01:03,214 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:01:03,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:01:03,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:01:03,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:01:03,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:01:03,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:01:03,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:01:03,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:01:03,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:01:03,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:01:03,216 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:01:03,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:01:03,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:01:03,217 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:01:03,217 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 23:01:03,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:01:03,565 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:01:03,569 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:01:03,570 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:01:03,571 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:01:03,571 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label18.c [2020-10-14 23:01:03,647 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f5f148f7/5cc5649c41e049849ee487e50c044713/FLAG15c4e0f82 [2020-10-14 23:01:04,585 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:01:04,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label18.c [2020-10-14 23:01:04,645 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f5f148f7/5cc5649c41e049849ee487e50c044713/FLAG15c4e0f82 [2020-10-14 23:01:05,006 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f5f148f7/5cc5649c41e049849ee487e50c044713 [2020-10-14 23:01:05,014 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:01:05,016 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:01:05,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:01:05,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:01:05,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:01:05,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:01:05" (1/1) ... [2020-10-14 23:01:05,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11ced97d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:01:05, skipping insertion in model container [2020-10-14 23:01:05,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:01:05" (1/1) ... [2020-10-14 23:01:05,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:01:05,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:01:07,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:01:07,789 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:01:08,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:01:08,885 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:01:08,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:01:08 WrapperNode [2020-10-14 23:01:08,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:01:08,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:01:08,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:01:08,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:01:08,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:01:08" (1/1) ... [2020-10-14 23:01:08,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:01:08" (1/1) ... [2020-10-14 23:01:09,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:01:08" (1/1) ... [2020-10-14 23:01:09,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:01:08" (1/1) ... [2020-10-14 23:01:09,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:01:08" (1/1) ... [2020-10-14 23:01:09,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:01:08" (1/1) ... [2020-10-14 23:01:09,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:01:08" (1/1) ... [2020-10-14 23:01:09,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:01:09,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:01:09,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:01:09,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:01:09,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:01:08" (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 23:01:09,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:01:09,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:01:09,733 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 23:01:09,733 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 23:01:09,735 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 23:01:09,735 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 23:01:09,735 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 23:01:09,737 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 23:01:09,737 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:01:09,737 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 23:01:09,737 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 23:01:09,737 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 23:01:09,738 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 23:01:09,738 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 23:01:09,738 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 23:01:09,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:01:09,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:01:09,739 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:01:09,740 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:01:09,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:01:09,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:01:22,151 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:01:22,152 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:01:22,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:01:22 BoogieIcfgContainer [2020-10-14 23:01:22,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:01:22,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:01:22,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:01:22,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:01:22,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:01:05" (1/3) ... [2020-10-14 23:01:22,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5206edfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:01:22, skipping insertion in model container [2020-10-14 23:01:22,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:01:08" (2/3) ... [2020-10-14 23:01:22,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5206edfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:01:22, skipping insertion in model container [2020-10-14 23:01:22,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:01:22" (3/3) ... [2020-10-14 23:01:22,187 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label18.c [2020-10-14 23:01:22,197 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:01:22,210 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:01:22,224 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:01:22,258 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:01:22,258 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:01:22,258 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:01:22,259 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:01:22,259 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:01:22,259 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:01:22,259 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:01:22,259 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:01:22,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 23:01:22,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:01:22,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:01:22,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:01:22,326 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:01:22,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:01:22,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1753504698, now seen corresponding path program 1 times [2020-10-14 23:01:22,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:01:22,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927847715] [2020-10-14 23:01:22,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:01:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:01:22,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:01:22,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:01:22,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:01:22,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:01:22,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-10-14 23:01:22,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:01:22,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:01:22,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:01:22,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:01:22,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 23:01:22,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:01:23,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:01:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:01:23,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:01:23,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:01:23,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:01:23,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:01:23,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 23:01:23,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:01:23,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:01:23,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:01:23,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:01:23,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:01:23,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:01:23,157 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 23:01:23,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927847715] [2020-10-14 23:01:23,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:01:23,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:01:23,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320947028] [2020-10-14 23:01:23,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:01:23,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:01:23,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:01:23,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:01:23,185 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 5 states. [2020-10-14 23:01:57,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:01:57,843 INFO L93 Difference]: Finished difference Result 6572 states and 12481 transitions. [2020-10-14 23:01:57,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:01:57,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-14 23:01:57,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:01:57,900 INFO L225 Difference]: With dead ends: 6572 [2020-10-14 23:01:57,901 INFO L226 Difference]: Without dead ends: 4727 [2020-10-14 23:01:57,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:01:57,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4727 states. [2020-10-14 23:01:58,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4727 to 4640. [2020-10-14 23:01:58,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4640 states. [2020-10-14 23:01:58,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4640 states to 4640 states and 7457 transitions. [2020-10-14 23:01:58,204 INFO L78 Accepts]: Start accepts. Automaton has 4640 states and 7457 transitions. Word has length 36 [2020-10-14 23:01:58,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:01:58,204 INFO L479 AbstractCegarLoop]: Abstraction has 4640 states and 7457 transitions. [2020-10-14 23:01:58,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:01:58,205 INFO L276 IsEmpty]: Start isEmpty. Operand 4640 states and 7457 transitions. [2020-10-14 23:01:58,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 23:01:58,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:01:58,211 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:01:58,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:01:58,212 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:01:58,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:01:58,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1411084081, now seen corresponding path program 1 times [2020-10-14 23:01:58,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:01:58,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014864467] [2020-10-14 23:01:58,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:01:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:01:58,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:01:58,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:01:59,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:01:59,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:01:59,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 23:01:59,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:01:59,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1673 [2020-10-14 23:01:59,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:01:59,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:01:59,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:01:59,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:01:59,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 23:01:59,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 23:02:00,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:02:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:02:00,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:02:00,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:02:00,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:02:00,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:02:00,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 23:02:00,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:02:00,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:02:00,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:02:00,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:02:00,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:02:00,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 23:02:00,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:02:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:02:00,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:02:00,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:02:00,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:02:00,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 23:02:00,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:02:00,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-14 23:02:00,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:02:00,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:02:00,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:02:00,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:02:00,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 23:02:00,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:02:00,476 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:02:00,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014864467] [2020-10-14 23:02:00,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:02:00,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:02:00,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055859987] [2020-10-14 23:02:00,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:02:00,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:02:00,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:02:00,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:02:00,481 INFO L87 Difference]: Start difference. First operand 4640 states and 7457 transitions. Second operand 7 states. [2020-10-14 23:02:38,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:02:38,763 INFO L93 Difference]: Finished difference Result 17756 states and 29200 transitions. [2020-10-14 23:02:38,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:02:38,765 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-14 23:02:38,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:02:38,828 INFO L225 Difference]: With dead ends: 17756 [2020-10-14 23:02:38,828 INFO L226 Difference]: Without dead ends: 13122 [2020-10-14 23:02:38,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:02:38,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13122 states. [2020-10-14 23:02:39,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13122 to 13116. [2020-10-14 23:02:39,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13116 states. [2020-10-14 23:02:39,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13116 states to 13116 states and 19587 transitions. [2020-10-14 23:02:39,119 INFO L78 Accepts]: Start accepts. Automaton has 13116 states and 19587 transitions. Word has length 111 [2020-10-14 23:02:39,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:02:39,120 INFO L479 AbstractCegarLoop]: Abstraction has 13116 states and 19587 transitions. [2020-10-14 23:02:39,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:02:39,120 INFO L276 IsEmpty]: Start isEmpty. Operand 13116 states and 19587 transitions. [2020-10-14 23:02:39,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 23:02:39,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:02:39,124 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:39,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:02:39,124 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:02:39,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:02:39,125 INFO L82 PathProgramCache]: Analyzing trace with hash -995758193, now seen corresponding path program 1 times [2020-10-14 23:02:39,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:02:39,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145414524] [2020-10-14 23:02:39,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:02:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:02:39,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:02:39,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:02:40,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:02:40,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:02:40,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 23:02:40,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:02:40,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1803 [2020-10-14 23:02:40,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:02:40,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:02:40,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:02:40,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:02:40,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 23:02:40,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:02:41,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:02:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:02:41,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:02:41,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:02:41,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:02:41,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:02:41,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:02:41,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:02:41,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:02:41,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:02:41,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:02:41,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:02:41,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:02:41,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:02:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:02:41,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:02:41,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:02:41,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 23:02:41,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:02:41,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-14 23:02:41,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:02:41,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:02:41,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:02:41,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:02:41,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 23:02:41,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:02:41,417 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:02:41,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145414524] [2020-10-14 23:02:41,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:02:41,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:02:41,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009191659] [2020-10-14 23:02:41,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:02:41,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:02:41,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:02:41,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:02:41,421 INFO L87 Difference]: Start difference. First operand 13116 states and 19587 transitions. Second operand 7 states. [2020-10-14 23:03:26,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:03:26,901 INFO L93 Difference]: Finished difference Result 39740 states and 61778 transitions. [2020-10-14 23:03:26,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:03:26,905 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2020-10-14 23:03:26,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:03:27,008 INFO L225 Difference]: With dead ends: 39740 [2020-10-14 23:03:27,009 INFO L226 Difference]: Without dead ends: 26630 [2020-10-14 23:03:27,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 23:03:27,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26630 states. [2020-10-14 23:03:27,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26630 to 26416. [2020-10-14 23:03:27,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26416 states. [2020-10-14 23:03:27,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26416 states to 26416 states and 36552 transitions. [2020-10-14 23:03:27,678 INFO L78 Accepts]: Start accepts. Automaton has 26416 states and 36552 transitions. Word has length 137 [2020-10-14 23:03:27,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:03:27,681 INFO L479 AbstractCegarLoop]: Abstraction has 26416 states and 36552 transitions. [2020-10-14 23:03:27,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:03:27,681 INFO L276 IsEmpty]: Start isEmpty. Operand 26416 states and 36552 transitions. [2020-10-14 23:03:27,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-14 23:03:27,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:03:27,702 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:03:27,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:03:27,702 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:03:27,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:03:27,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1253129744, now seen corresponding path program 1 times [2020-10-14 23:03:27,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:03:27,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998440573] [2020-10-14 23:03:27,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:03:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:03:27,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:27,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:28,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:29,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:03:29,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-14 23:03:29,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:03:29,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2153 [2020-10-14 23:03:29,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:03:29,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:03:29,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:03:29,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:03:29,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 23:03:29,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:03:30,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:03:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:03:30,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:30,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:03:30,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:03:30,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:03:30,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 23:03:30,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:03:30,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:03:30,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:03:30,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:03:30,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:03:30,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:03:30,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:03:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:03:30,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:30,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:30,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:03:30,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 23:03:30,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:03:30,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-14 23:03:30,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:03:30,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:03:30,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:03:30,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:03:30,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 23:03:30,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:03:30,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-14 23:03:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:03:30,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:30,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:03:30,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 23:03:30,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:03:30,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 23:03:30,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:03:30,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:03:30,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:03:30,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:03:30,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 23:03:30,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:03:30,614 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-14 23:03:30,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998440573] [2020-10-14 23:03:30,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:03:30,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:03:30,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778876033] [2020-10-14 23:03:30,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:03:30,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:03:30,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:03:30,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:03:30,619 INFO L87 Difference]: Start difference. First operand 26416 states and 36552 transitions. Second operand 7 states. [2020-10-14 23:04:24,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:04:24,626 INFO L93 Difference]: Finished difference Result 79719 states and 114642 transitions. [2020-10-14 23:04:24,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:04:24,629 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 234 [2020-10-14 23:04:24,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:04:24,846 INFO L225 Difference]: With dead ends: 79719 [2020-10-14 23:04:24,847 INFO L226 Difference]: Without dead ends: 53309 [2020-10-14 23:04:24,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:04:24,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53309 states. [2020-10-14 23:04:25,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53309 to 46130. [2020-10-14 23:04:25,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46130 states. [2020-10-14 23:04:25,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46130 states to 46130 states and 65173 transitions. [2020-10-14 23:04:25,975 INFO L78 Accepts]: Start accepts. Automaton has 46130 states and 65173 transitions. Word has length 234 [2020-10-14 23:04:25,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:04:25,976 INFO L479 AbstractCegarLoop]: Abstraction has 46130 states and 65173 transitions. [2020-10-14 23:04:25,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:04:25,976 INFO L276 IsEmpty]: Start isEmpty. Operand 46130 states and 65173 transitions. [2020-10-14 23:04:25,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-10-14 23:04:25,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:04:25,984 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:04:25,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:04:25,985 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:04:25,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:04:25,985 INFO L82 PathProgramCache]: Analyzing trace with hash 829608541, now seen corresponding path program 1 times [2020-10-14 23:04:25,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:04:25,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003335832] [2020-10-14 23:04:25,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:04:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:04:26,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:26,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:27,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:29,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:04:29,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-14 23:04:29,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:04:29,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3793 [2020-10-14 23:04:29,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:04:29,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:04:29,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:04:29,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:04:29,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 243 [2020-10-14 23:04:29,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:04:29,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:04:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:04:29,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:29,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:04:29,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:04:29,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:04:29,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:04:29,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:04:29,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:04:29,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:04:29,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:04:29,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:04:29,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:04:30,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:04:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:04:30,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:30,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:04:30,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 23:04:30,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:04:30,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-10-14 23:04:30,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:04:30,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:04:30,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:04:30,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:04:30,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-14 23:04:30,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:04:30,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-14 23:04:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:04:30,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:30,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:04:30,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 23:04:30,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:04:30,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 23:04:30,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:04:30,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:04:30,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:04:30,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 23:04:30,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:04:30,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:04:31,039 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 58 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 23:04:31,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003335832] [2020-10-14 23:04:31,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:04:31,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:04:31,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179003454] [2020-10-14 23:04:31,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:04:31,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:04:31,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:04:31,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:04:31,043 INFO L87 Difference]: Start difference. First operand 46130 states and 65173 transitions. Second operand 7 states.