/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 SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:27:50,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:27:50,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:27:50,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:27:50,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:27:50,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:27:50,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:27:50,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:27:50,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:27:50,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:27:50,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:27:50,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:27:50,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:27:50,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:27:50,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:27:50,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:27:50,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:27:50,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:27:50,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:27:50,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:27:50,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:27:50,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:27:50,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:27:50,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:27:50,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:27:50,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:27:50,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:27:50,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:27:50,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:27:50,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:27:50,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:27:50,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:27:50,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:27:50,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:27:50,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:27:50,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:27:50,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:27:50,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:27:50,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:27:50,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:27:50,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:27:50,228 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 [2020-09-25 12:27:50,272 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:27:50,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:27:50,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:27:50,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:27:50,274 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:27:50,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:27:50,274 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:27:50,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:27:50,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:27:50,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:27:50,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:27:50,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:27:50,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:27:50,275 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:27:50,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:27:50,276 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:27:50,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:27:50,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:27:50,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:27:50,277 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:27:50,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:27:50,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:27:50,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:27:50,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:27:50,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:27:50,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:27:50,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:27:50,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:27:50,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:27:50,279 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 -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:27:50,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:27:50,717 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:27:50,722 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:27:50,724 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:27:50,724 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:27:50,726 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label18.c [2020-09-25 12:27:50,818 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08338787d/c22d99a755ad4d0f9f0f0074633c4ed0/FLAG0f07de5ae [2020-09-25 12:27:51,525 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:27:51,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label18.c [2020-09-25 12:27:51,548 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08338787d/c22d99a755ad4d0f9f0f0074633c4ed0/FLAG0f07de5ae [2020-09-25 12:27:51,753 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08338787d/c22d99a755ad4d0f9f0f0074633c4ed0 [2020-09-25 12:27:51,769 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:27:51,775 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:27:51,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:51,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:27:51,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:27:51,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:51" (1/1) ... [2020-09-25 12:27:51,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d972e6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:51, skipping insertion in model container [2020-09-25 12:27:51,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:51" (1/1) ... [2020-09-25 12:27:51,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:27:51,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:27:52,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:52,603 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:27:52,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:52,783 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:27:52,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:52 WrapperNode [2020-09-25 12:27:52,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:52,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:27:52,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:27:52,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:27:52,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:52" (1/1) ... [2020-09-25 12:27:52,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:52" (1/1) ... [2020-09-25 12:27:52,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:52" (1/1) ... [2020-09-25 12:27:52,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:52" (1/1) ... [2020-09-25 12:27:52,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:52" (1/1) ... [2020-09-25 12:27:52,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:52" (1/1) ... [2020-09-25 12:27:52,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:52" (1/1) ... [2020-09-25 12:27:52,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:27:52,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:27:52,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:27:52,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:27:52,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:52" (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 [2020-09-25 12:27:53,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:27:53,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:27:53,040 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:27:53,040 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:27:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:27:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:27:53,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:27:53,042 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:27:53,042 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:27:53,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:27:53,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:27:55,613 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:27:55,614 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:27:55,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:27:55 BoogieIcfgContainer [2020-09-25 12:27:55,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:27:55,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:27:55,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:27:55,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:27:55,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:27:51" (1/3) ... [2020-09-25 12:27:55,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799d2a32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:27:55, skipping insertion in model container [2020-09-25 12:27:55,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:52" (2/3) ... [2020-09-25 12:27:55,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799d2a32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:27:55, skipping insertion in model container [2020-09-25 12:27:55,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:27:55" (3/3) ... [2020-09-25 12:27:55,651 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label18.c [2020-09-25 12:27:55,664 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:27:55,680 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:27:55,703 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:27:55,742 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:27:55,742 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:27:55,742 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:27:55,743 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:27:55,743 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:27:55,743 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:27:55,743 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:27:55,743 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:27:55,783 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 12:27:55,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 12:27:55,793 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:55,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:27:55,796 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:55,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:55,806 INFO L82 PathProgramCache]: Analyzing trace with hash -123889732, now seen corresponding path program 1 times [2020-09-25 12:27:55,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:55,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172215892] [2020-09-25 12:27:55,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:56,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:56,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:56,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:57,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:57,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 12:27:57,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:27:57,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1219 [2020-09-25 12:27:57,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:57,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:57,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:57,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:27:57,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 12:27:57,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:27:57,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:57,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:57,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:57,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:27:57,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:57,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 12:27:57,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:57,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:57,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:57,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:57,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:27:57,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:57,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:57,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172215892] [2020-09-25 12:27:57,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:27:57,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:27:57,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817533816] [2020-09-25 12:27:57,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:27:57,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:57,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:27:57,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:27:57,482 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 4 states. [2020-09-25 12:28:01,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:01,208 INFO L93 Difference]: Finished difference Result 1921 states and 2518 transitions. [2020-09-25 12:28:01,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:28:01,212 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-09-25 12:28:01,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:01,245 INFO L225 Difference]: With dead ends: 1921 [2020-09-25 12:28:01,245 INFO L226 Difference]: Without dead ends: 1036 [2020-09-25 12:28:01,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:28:01,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2020-09-25 12:28:01,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 978. [2020-09-25 12:28:01,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-09-25 12:28:01,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1165 transitions. [2020-09-25 12:28:01,405 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1165 transitions. Word has length 55 [2020-09-25 12:28:01,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:01,406 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1165 transitions. [2020-09-25 12:28:01,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:28:01,406 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1165 transitions. [2020-09-25 12:28:01,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 12:28:01,416 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:01,417 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:28:01,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:28:01,418 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:01,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:01,419 INFO L82 PathProgramCache]: Analyzing trace with hash 497365935, now seen corresponding path program 1 times [2020-09-25 12:28:01,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:01,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177012451] [2020-09-25 12:28:01,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:01,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:01,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:03,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:04,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:04,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:05,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:06,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:06,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 12:28:06,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:28:06,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 12:28:06,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:06,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:06,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:28:06,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:28:06,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 12:28:06,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:06,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:06,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:06,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:06,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:28:06,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:06,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 12:28:06,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:06,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:06,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:06,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:06,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 12:28:06,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:06,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 12:28:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:06,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:07,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:07,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:07,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 12:28:07,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:28:07,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 602 [2020-09-25 12:28:07,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:07,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:07,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:28:07,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:07,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 12:28:07,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:07,569 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:07,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177012451] [2020-09-25 12:28:07,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:07,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:28:07,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619675833] [2020-09-25 12:28:07,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:28:07,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:07,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:28:07,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:28:07,575 INFO L87 Difference]: Start difference. First operand 978 states and 1165 transitions. Second operand 10 states. [2020-09-25 12:28:16,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:16,771 INFO L93 Difference]: Finished difference Result 2594 states and 3362 transitions. [2020-09-25 12:28:16,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:28:16,775 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 137 [2020-09-25 12:28:16,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:16,788 INFO L225 Difference]: With dead ends: 2594 [2020-09-25 12:28:16,788 INFO L226 Difference]: Without dead ends: 1602 [2020-09-25 12:28:16,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:28:16,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2020-09-25 12:28:16,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 1388. [2020-09-25 12:28:16,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1388 states. [2020-09-25 12:28:16,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 1607 transitions. [2020-09-25 12:28:16,845 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 1607 transitions. Word has length 137 [2020-09-25 12:28:16,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:16,846 INFO L479 AbstractCegarLoop]: Abstraction has 1388 states and 1607 transitions. [2020-09-25 12:28:16,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:28:16,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 1607 transitions. [2020-09-25 12:28:16,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 12:28:16,850 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:16,850 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:28:16,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:28:16,850 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:16,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:16,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1536608329, now seen corresponding path program 1 times [2020-09-25 12:28:16,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:16,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85775865] [2020-09-25 12:28:16,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:16,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:16,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:17,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:17,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:18,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:18,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:21,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:21,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:21,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 12:28:21,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:28:21,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 12:28:21,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:21,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:21,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:28:21,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 12:28:21,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:28:21,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:22,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:22,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:22,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:22,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:28:22,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:22,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:28:22,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:22,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:22,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:22,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:22,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:28:22,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:22,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 12:28:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:22,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:22,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:22,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 12:28:22,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:22,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-25 12:28:22,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:22,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:22,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:22,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:22,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 12:28:22,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:22,437 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:22,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85775865] [2020-09-25 12:28:22,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:28:22,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 12:28:22,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030684986] [2020-09-25 12:28:22,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:28:22,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:22,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:28:22,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:28:22,441 INFO L87 Difference]: Start difference. First operand 1388 states and 1607 transitions. Second operand 8 states. [2020-09-25 12:28:30,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:30,431 INFO L93 Difference]: Finished difference Result 4140 states and 5030 transitions. [2020-09-25 12:28:30,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 12:28:30,432 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 139 [2020-09-25 12:28:30,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:30,448 INFO L225 Difference]: With dead ends: 4140 [2020-09-25 12:28:30,448 INFO L226 Difference]: Without dead ends: 2966 [2020-09-25 12:28:30,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:28:30,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-09-25 12:28:30,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 2448. [2020-09-25 12:28:30,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2448 states. [2020-09-25 12:28:30,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 2931 transitions. [2020-09-25 12:28:30,531 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 2931 transitions. Word has length 139 [2020-09-25 12:28:30,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:30,532 INFO L479 AbstractCegarLoop]: Abstraction has 2448 states and 2931 transitions. [2020-09-25 12:28:30,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:28:30,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 2931 transitions. [2020-09-25 12:28:30,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 12:28:30,535 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:30,535 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:28:30,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:28:30,536 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:30,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:30,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1591885366, now seen corresponding path program 1 times [2020-09-25 12:28:30,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:30,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506148617] [2020-09-25 12:28:30,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:30,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:30,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:30,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:31,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:31,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:31,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:35,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:35,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 12:28:35,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:28:35,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4912 [2020-09-25 12:28:35,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:35,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:35,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:28:35,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:28:35,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-09-25 12:28:35,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:35,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:35,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:35,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:35,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:28:35,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:35,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:28:35,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:35,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:35,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:35,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:35,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:28:35,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:35,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 12:28:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:35,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:35,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:35,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 12:28:35,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:35,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 12:28:35,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:35,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:35,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:35,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:35,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 12:28:35,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:35,921 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 12:28:35,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506148617] [2020-09-25 12:28:35,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:35,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:28:35,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809657665] [2020-09-25 12:28:35,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:28:35,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:35,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:28:35,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:28:35,927 INFO L87 Difference]: Start difference. First operand 2448 states and 2931 transitions. Second operand 6 states. [2020-09-25 12:28:40,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:40,804 INFO L93 Difference]: Finished difference Result 5522 states and 6691 transitions. [2020-09-25 12:28:40,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:28:40,805 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 180 [2020-09-25 12:28:40,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:40,826 INFO L225 Difference]: With dead ends: 5522 [2020-09-25 12:28:40,826 INFO L226 Difference]: Without dead ends: 3485 [2020-09-25 12:28:40,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:28:40,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3485 states. [2020-09-25 12:28:40,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3485 to 3380. [2020-09-25 12:28:40,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3380 states. [2020-09-25 12:28:40,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3380 states to 3380 states and 4038 transitions. [2020-09-25 12:28:40,938 INFO L78 Accepts]: Start accepts. Automaton has 3380 states and 4038 transitions. Word has length 180 [2020-09-25 12:28:40,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:40,939 INFO L479 AbstractCegarLoop]: Abstraction has 3380 states and 4038 transitions. [2020-09-25 12:28:40,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:28:40,939 INFO L276 IsEmpty]: Start isEmpty. Operand 3380 states and 4038 transitions. [2020-09-25 12:28:40,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 12:28:40,942 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:40,943 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:28:40,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:28:40,943 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:40,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:40,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1364277337, now seen corresponding path program 1 times [2020-09-25 12:28:40,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:40,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852847790] [2020-09-25 12:28:40,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:41,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:41,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:41,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:42,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:42,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-25 12:28:42,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:28:42,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1568 [2020-09-25 12:28:42,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:42,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:42,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:42,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-09-25 12:28:42,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 12:28:42,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:42,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:42,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:42,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:42,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:28:42,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:42,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:28:42,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:42,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:42,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:28:42,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:42,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:28:42,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:42,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 12:28:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:42,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:42,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:42,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 12:28:42,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:42,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-25 12:28:42,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:42,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:42,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:42,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:42,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 12:28:42,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:43,048 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:43,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852847790] [2020-09-25 12:28:43,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:43,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:28:43,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660760545] [2020-09-25 12:28:43,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:28:43,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:43,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:28:43,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:28:43,052 INFO L87 Difference]: Start difference. First operand 3380 states and 4038 transitions. Second operand 5 states.