/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=BIGGEST --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_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:24:29,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:24:29,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:24:29,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:24:29,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:24:29,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:24:29,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:24:29,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:24:29,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:24:29,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:24:29,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:24:29,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:24:29,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:24:29,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:24:29,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:24:29,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:24:29,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:24:29,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:24:29,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:24:29,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:24:29,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:24:29,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:24:29,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:24:29,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:24:29,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:24:29,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:24:29,189 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:24:29,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:24:29,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:24:29,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:24:29,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:24:29,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:24:29,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:24:29,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:24:29,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:24:29,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:24:29,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:24:29,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:24:29,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:24:29,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:24:29,207 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:24:29,208 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 [2020-10-12 15:24:29,236 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:24:29,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:24:29,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:24:29,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:24:29,238 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:24:29,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:24:29,239 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:24:29,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:24:29,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:24:29,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:24:29,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:24:29,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:24:29,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:24:29,240 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:24:29,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:24:29,241 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:24:29,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:24:29,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:24:29,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:24:29,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:24:29,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:24:29,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:24:29,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:24:29,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:24:29,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:24:29,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:24:29,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:24:29,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:24:29,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:24:29,244 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:24:29,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:24:29,604 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:24:29,608 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:24:29,611 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:24:29,611 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:24:29,612 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label50.c [2020-10-12 15:24:29,688 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1d02fe24/a43bd314090545eeb4a23a740d3fb0db/FLAGd674dd7d5 [2020-10-12 15:24:30,768 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:24:30,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label50.c [2020-10-12 15:24:30,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1d02fe24/a43bd314090545eeb4a23a740d3fb0db/FLAGd674dd7d5 [2020-10-12 15:24:31,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1d02fe24/a43bd314090545eeb4a23a740d3fb0db [2020-10-12 15:24:31,132 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:24:31,134 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:24:31,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:24:31,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:24:31,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:24:31,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:24:31" (1/1) ... [2020-10-12 15:24:31,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d15d1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:31, skipping insertion in model container [2020-10-12 15:24:31,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:24:31" (1/1) ... [2020-10-12 15:24:31,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:24:31,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:24:34,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:24:34,223 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:24:35,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:24:35,419 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:24:35,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:35 WrapperNode [2020-10-12 15:24:35,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:24:35,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:24:35,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:24:35,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:24:35,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:35" (1/1) ... [2020-10-12 15:24:35,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:35" (1/1) ... [2020-10-12 15:24:35,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:35" (1/1) ... [2020-10-12 15:24:35,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:35" (1/1) ... [2020-10-12 15:24:35,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:35" (1/1) ... [2020-10-12 15:24:35,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:35" (1/1) ... [2020-10-12 15:24:35,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:35" (1/1) ... [2020-10-12 15:24:36,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:24:36,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:24:36,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:24:36,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:24:36,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:35" (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 [2020-10-12 15:24:36,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:24:36,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:24:36,312 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 15:24:36,312 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 15:24:36,312 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 15:24:36,313 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 15:24:36,313 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 15:24:36,313 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-12 15:24:36,313 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:24:36,314 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 15:24:36,314 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 15:24:36,314 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 15:24:36,314 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 15:24:36,314 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 15:24:36,314 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-12 15:24:36,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:24:36,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:24:36,315 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:24:36,317 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:24:36,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:24:36,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:24:49,920 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:24:49,921 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 15:24:49,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:24:49 BoogieIcfgContainer [2020-10-12 15:24:49,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:24:49,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:24:49,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:24:49,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:24:49,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:24:31" (1/3) ... [2020-10-12 15:24:49,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13326d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:24:49, skipping insertion in model container [2020-10-12 15:24:49,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:24:35" (2/3) ... [2020-10-12 15:24:49,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13326d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:24:49, skipping insertion in model container [2020-10-12 15:24:49,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:24:49" (3/3) ... [2020-10-12 15:24:49,965 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label50.c [2020-10-12 15:24:49,976 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:24:49,988 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:24:50,005 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:24:50,043 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:24:50,043 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:24:50,044 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:24:50,044 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:24:50,044 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:24:50,044 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:24:50,044 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:24:50,044 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:24:50,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-12 15:24:50,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 15:24:50,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:24:50,107 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] [2020-10-12 15:24:50,108 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:24:50,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:24:50,117 INFO L82 PathProgramCache]: Analyzing trace with hash 758600274, now seen corresponding path program 1 times [2020-10-12 15:24:50,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:24:50,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508653898] [2020-10-12 15:24:50,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:24:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:24:50,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:24:50,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:24:50,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 15:24:50,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:24:50,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-10-12 15:24:50,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:24:50,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:24:50,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:24:50,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 15:24:50,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 15:24:50,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:24:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:24:51,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:24:51,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:24:51,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:24:51,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:24:51,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 15:24:51,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:24:51,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:24:51,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:24:51,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:24:51,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:24:51,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:24:51,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508653898] [2020-10-12 15:24:51,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:24:51,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:24:51,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247468693] [2020-10-12 15:24:51,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:24:51,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:24:51,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:24:51,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:24:51,080 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-12 15:25:20,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:25:20,430 INFO L93 Difference]: Finished difference Result 5031 states and 9453 transitions. [2020-10-12 15:25:20,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 15:25:20,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-12 15:25:20,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:25:20,496 INFO L225 Difference]: With dead ends: 5031 [2020-10-12 15:25:20,496 INFO L226 Difference]: Without dead ends: 3190 [2020-10-12 15:25:20,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:25:20,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2020-10-12 15:25:20,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 3184. [2020-10-12 15:25:20,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3184 states. [2020-10-12 15:25:20,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 4965 transitions. [2020-10-12 15:25:20,766 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 4965 transitions. Word has length 26 [2020-10-12 15:25:20,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:25:20,767 INFO L479 AbstractCegarLoop]: Abstraction has 3184 states and 4965 transitions. [2020-10-12 15:25:20,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:25:20,767 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 4965 transitions. [2020-10-12 15:25:20,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-12 15:25:20,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:25:20,774 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:25:20,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:25:20,776 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:25:20,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:25:20,776 INFO L82 PathProgramCache]: Analyzing trace with hash 83370996, now seen corresponding path program 1 times [2020-10-12 15:25:20,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:25:20,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876781027] [2020-10-12 15:25:20,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:25:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:25:20,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:20,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:21,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:22,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:23,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:23,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:23,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:25:23,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 15:25:23,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 15:25:23,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3024 [2020-10-12 15:25:23,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:25:23,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:25:23,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:25:23,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 15:25:23,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-12 15:25:23,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:25:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:25:23,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:23,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:25:23,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:25:23,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:25:23,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 15:25:23,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:25:23,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:25:23,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:25:23,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:25:23,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:25:24,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:25:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:25:24,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:24,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:24,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:25:24,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:25:24,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 15:25:24,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:25:24,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-12 15:25:24,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:25:24,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:25:24,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:25:24,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 15:25:24,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:25:24,594 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:25:24,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876781027] [2020-10-12 15:25:24,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:25:24,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 15:25:24,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649316158] [2020-10-12 15:25:24,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:25:24,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:25:24,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:25:24,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:25:24,600 INFO L87 Difference]: Start difference. First operand 3184 states and 4965 transitions. Second operand 6 states. [2020-10-12 15:26:13,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:26:13,012 INFO L93 Difference]: Finished difference Result 9312 states and 14612 transitions. [2020-10-12 15:26:13,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:26:13,016 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-12 15:26:13,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:26:13,065 INFO L225 Difference]: With dead ends: 9312 [2020-10-12 15:26:13,066 INFO L226 Difference]: Without dead ends: 6134 [2020-10-12 15:26:13,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:26:13,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6134 states. [2020-10-12 15:26:13,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6134 to 6102. [2020-10-12 15:26:13,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6102 states. [2020-10-12 15:26:13,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6102 states to 6102 states and 8439 transitions. [2020-10-12 15:26:13,468 INFO L78 Accepts]: Start accepts. Automaton has 6102 states and 8439 transitions. Word has length 99 [2020-10-12 15:26:13,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:26:13,469 INFO L479 AbstractCegarLoop]: Abstraction has 6102 states and 8439 transitions. [2020-10-12 15:26:13,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:26:13,469 INFO L276 IsEmpty]: Start isEmpty. Operand 6102 states and 8439 transitions. [2020-10-12 15:26:13,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-12 15:26:13,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:26:13,472 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:26:13,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:26:13,472 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:26:13,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:26:13,473 INFO L82 PathProgramCache]: Analyzing trace with hash 223919606, now seen corresponding path program 1 times [2020-10-12 15:26:13,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:26:13,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819533370] [2020-10-12 15:26:13,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:26:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:26:13,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:26:13,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:26:13,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:26:14,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:26:14,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 15:26:14,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:26:14,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 987 [2020-10-12 15:26:14,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:26:14,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:26:14,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:26:14,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 15:26:14,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:26:14,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:26:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:26:14,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:26:14,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:26:14,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:26:14,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:26:14,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 15:26:14,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:26:14,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:26:14,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:26:14,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:26:14,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:26:14,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:26:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:26:14,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:26:14,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:26:14,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 15:26:14,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:26:14,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-12 15:26:14,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:26:14,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:26:14,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:26:14,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 15:26:14,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:26:14,886 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:26:14,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819533370] [2020-10-12 15:26:14,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:26:14,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:26:14,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062619545] [2020-10-12 15:26:14,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:26:14,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:26:14,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:26:14,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:26:14,890 INFO L87 Difference]: Start difference. First operand 6102 states and 8439 transitions. Second operand 7 states. [2020-10-12 15:27:01,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:27:01,100 INFO L93 Difference]: Finished difference Result 18280 states and 25557 transitions. [2020-10-12 15:27:01,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:27:01,103 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-12 15:27:01,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:27:01,157 INFO L225 Difference]: With dead ends: 18280 [2020-10-12 15:27:01,157 INFO L226 Difference]: Without dead ends: 12184 [2020-10-12 15:27:01,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:27:01,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12184 states. [2020-10-12 15:27:01,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12184 to 12038. [2020-10-12 15:27:01,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12038 states. [2020-10-12 15:27:01,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12038 states to 12038 states and 15428 transitions. [2020-10-12 15:27:01,455 INFO L78 Accepts]: Start accepts. Automaton has 12038 states and 15428 transitions. Word has length 99 [2020-10-12 15:27:01,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:27:01,460 INFO L479 AbstractCegarLoop]: Abstraction has 12038 states and 15428 transitions. [2020-10-12 15:27:01,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:27:01,460 INFO L276 IsEmpty]: Start isEmpty. Operand 12038 states and 15428 transitions. [2020-10-12 15:27:01,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-12 15:27:01,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:27:01,471 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:27:01,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:27:01,471 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:27:01,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:27:01,472 INFO L82 PathProgramCache]: Analyzing trace with hash 299388871, now seen corresponding path program 1 times [2020-10-12 15:27:01,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:27:01,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275045465] [2020-10-12 15:27:01,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:27:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:27:01,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:27:01,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:27:01,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:27:02,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:27:02,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-12 15:27:02,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:27:02,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1240 [2020-10-12 15:27:02,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:27:02,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:27:02,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:27:02,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 15:27:02,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:27:02,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:27:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:27:02,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:27:02,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:27:02,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:27:02,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:27:02,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 15:27:02,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:27:02,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:27:02,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:27:02,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:27:02,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:27:02,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:27:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:27:03,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:27:03,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:27:03,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 15:27:03,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:27:03,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-12 15:27:03,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:27:03,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:27:03,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:27:03,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 15:27:03,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:27:03,326 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:27:03,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275045465] [2020-10-12 15:27:03,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:27:03,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:27:03,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341144282] [2020-10-12 15:27:03,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:27:03,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:27:03,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:27:03,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:27:03,333 INFO L87 Difference]: Start difference. First operand 12038 states and 15428 transitions. Second operand 7 states. [2020-10-12 15:28:06,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:28:06,995 INFO L93 Difference]: Finished difference Result 36685 states and 48232 transitions. [2020-10-12 15:28:06,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:28:07,000 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-10-12 15:28:07,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:28:07,096 INFO L225 Difference]: With dead ends: 36685 [2020-10-12 15:28:07,096 INFO L226 Difference]: Without dead ends: 24653 [2020-10-12 15:28:07,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:28:07,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24653 states. [2020-10-12 15:28:07,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24653 to 24326. [2020-10-12 15:28:07,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24326 states. [2020-10-12 15:28:07,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24326 states to 24326 states and 29664 transitions. [2020-10-12 15:28:07,828 INFO L78 Accepts]: Start accepts. Automaton has 24326 states and 29664 transitions. Word has length 127 [2020-10-12 15:28:07,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:28:07,830 INFO L479 AbstractCegarLoop]: Abstraction has 24326 states and 29664 transitions. [2020-10-12 15:28:07,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:28:07,831 INFO L276 IsEmpty]: Start isEmpty. Operand 24326 states and 29664 transitions. [2020-10-12 15:28:07,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-12 15:28:07,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:28:07,838 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:28:07,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:28:07,839 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:28:07,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:28:07,839 INFO L82 PathProgramCache]: Analyzing trace with hash 578238015, now seen corresponding path program 1 times [2020-10-12 15:28:07,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:28:07,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719991802] [2020-10-12 15:28:07,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:28:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:07,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:07,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:08,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:08,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:08,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:09,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:10,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:12,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:12,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-12 15:28:12,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 15:28:12,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 15:28:12,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:12,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:28:12,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:28:12,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-12 15:28:12,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:28:13,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:28:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:13,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:13,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:13,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:28:13,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:28:13,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 15:28:13,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:13,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:28:13,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:28:13,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:28:13,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:28:13,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:28:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:13,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:13,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:13,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:13,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 15:28:13,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:28:13,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-12 15:28:13,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:13,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:28:13,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:28:13,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-12 15:28:13,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:28:13,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-12 15:28:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:28:13,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:13,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:28:13,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:28:13,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 15:28:13,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:28:13,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-12 15:28:13,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:28:13,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:28:13,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:28:13,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 15:28:13,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:28:13,847 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-12 15:28:13,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719991802] [2020-10-12 15:28:13,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:28:13,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 15:28:13,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833139570] [2020-10-12 15:28:13,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:28:13,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:28:13,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:28:13,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:28:13,852 INFO L87 Difference]: Start difference. First operand 24326 states and 29664 transitions. Second operand 7 states.