/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_25-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:53:16,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:53:16,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:53:16,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:53:16,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:53:16,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:53:16,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:53:16,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:53:16,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:53:16,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:53:16,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:53:16,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:53:16,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:53:16,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:53:16,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:53:16,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:53:16,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:53:16,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:53:16,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:53:16,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:53:16,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:53:16,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:53:16,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:53:16,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:53:16,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:53:16,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:53:16,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:53:16,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:53:16,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:53:16,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:53:16,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:53:16,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:53:16,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:53:16,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:53:16,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:53:16,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:53:16,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:53:16,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:53:16,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:53:16,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:53:16,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:53:16,829 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 08:53:16,878 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:53:16,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:53:16,880 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:53:16,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:53:16,881 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:53:16,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:53:16,881 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:53:16,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:53:16,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:53:16,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:53:16,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:53:16,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:53:16,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:53:16,884 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:53:16,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:53:16,885 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:53:16,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:53:16,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:53:16,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:53:16,886 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:53:16,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:53:16,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:53:16,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:53:16,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:53:16,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:53:16,887 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:53:16,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:53:16,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:53:16,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:53:16,888 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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:53:17,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:53:17,357 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:53:17,361 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:53:17,363 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:53:17,364 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:53:17,365 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_25-2.c [2020-09-25 08:53:17,448 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e68c5065e/7ad4cbd42316403cb3e5d7008da6d6b0/FLAGbb848409c [2020-09-25 08:53:17,964 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:53:17,965 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_25-2.c [2020-09-25 08:53:17,973 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e68c5065e/7ad4cbd42316403cb3e5d7008da6d6b0/FLAGbb848409c [2020-09-25 08:53:18,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e68c5065e/7ad4cbd42316403cb3e5d7008da6d6b0 [2020-09-25 08:53:18,321 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:53:18,328 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:53:18,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:53:18,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:53:18,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:53:18,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:53:18" (1/1) ... [2020-09-25 08:53:18,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3161b126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:18, skipping insertion in model container [2020-09-25 08:53:18,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:53:18" (1/1) ... [2020-09-25 08:53:18,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:53:18,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:53:18,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:53:18,583 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:53:18,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:53:18,623 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:53:18,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:18 WrapperNode [2020-09-25 08:53:18,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:53:18,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:53:18,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:53:18,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:53:18,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:18" (1/1) ... [2020-09-25 08:53:18,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:18" (1/1) ... [2020-09-25 08:53:18,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:18" (1/1) ... [2020-09-25 08:53:18,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:18" (1/1) ... [2020-09-25 08:53:18,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:18" (1/1) ... [2020-09-25 08:53:18,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:18" (1/1) ... [2020-09-25 08:53:18,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:18" (1/1) ... [2020-09-25 08:53:18,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:53:18,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:53:18,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:53:18,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:53:18,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:18" (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 08:53:18,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:53:18,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:53:18,834 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 08:53:18,834 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:53:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:53:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:53:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 08:53:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:53:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:53:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:53:19,049 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:53:19,049 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 08:53:19,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:53:19 BoogieIcfgContainer [2020-09-25 08:53:19,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:53:19,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:53:19,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:53:19,061 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:53:19,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:53:18" (1/3) ... [2020-09-25 08:53:19,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732a2d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:53:19, skipping insertion in model container [2020-09-25 08:53:19,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:53:18" (2/3) ... [2020-09-25 08:53:19,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732a2d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:53:19, skipping insertion in model container [2020-09-25 08:53:19,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:53:19" (3/3) ... [2020-09-25 08:53:19,066 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_25-2.c [2020-09-25 08:53:19,080 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:53:19,092 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:53:19,155 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:53:19,211 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:53:19,211 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:53:19,211 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:53:19,212 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:53:19,212 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:53:19,212 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:53:19,212 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:53:19,212 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:53:19,233 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 08:53:19,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 08:53:19,241 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:19,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:19,243 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:19,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:19,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 08:53:19,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:19,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055041219] [2020-09-25 08:53:19,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:19,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:19,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:19,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:53:19,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:19,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 08:53:19,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:19,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:19,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:19,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:53:19,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:53:19,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 08:53:19,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:19,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:19,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:19,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:19,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:19,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:53:19,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:19,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:19,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:19,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:19,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:19,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:19,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:19,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:19,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:19,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:19,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:19,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 08:53:19,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:19,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:19,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:19,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:53:19,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:19,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:19,650 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 08:53:19,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055041219] [2020-09-25 08:53:19,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:53:19,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:53:19,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730141953] [2020-09-25 08:53:19,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:53:19,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:19,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:53:19,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:53:19,692 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 08:53:19,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:19,833 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 08:53:19,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:53:19,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 08:53:19,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:19,850 INFO L225 Difference]: With dead ends: 44 [2020-09-25 08:53:19,850 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 08:53:19,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:53:19,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 08:53:19,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 08:53:19,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 08:53:19,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 08:53:19,912 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 08:53:19,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:19,913 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 08:53:19,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:53:19,913 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 08:53:19,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 08:53:19,916 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:19,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:19,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:53:19,917 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:19,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:19,918 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 08:53:19,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:19,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856649050] [2020-09-25 08:53:19,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:19,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:20,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:20,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 08:53:20,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:20,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 08:53:20,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:20,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:20,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:20,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:53:20,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:20,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:20,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:20,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:20,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:20,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:20,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:20,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:20,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:53:20,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:20,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:20,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:20,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:20,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:20,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:20,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:20,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:20,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:20,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:20,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:20,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 08:53:20,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:20,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:20,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:20,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:53:20,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:20,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:20,161 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 08:53:20,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856649050] [2020-09-25 08:53:20,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:53:20,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:53:20,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493430003] [2020-09-25 08:53:20,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:53:20,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:20,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:53:20,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:53:20,166 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 08:53:20,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:20,240 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 08:53:20,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:53:20,241 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 08:53:20,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:20,243 INFO L225 Difference]: With dead ends: 36 [2020-09-25 08:53:20,243 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 08:53:20,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:53:20,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 08:53:20,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 08:53:20,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 08:53:20,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 08:53:20,253 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 08:53:20,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:20,254 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 08:53:20,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:53:20,254 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 08:53:20,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 08:53:20,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:20,256 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 08:53:20,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:53:20,256 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:20,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:20,257 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 08:53:20,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:20,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561267576] [2020-09-25 08:53:20,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:20,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:20,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:20,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:20,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:20,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 08:53:20,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:53:20,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 608 [2020-09-25 08:53:20,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:20,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:20,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:53:20,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:53:20,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:53:20,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:53:20,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:20,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:20,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:20,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:20,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:20,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:53:20,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:20,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:20,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:20,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:20,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:20,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:20,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:20,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:20,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:20,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:21,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:21,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:53:21,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:53:21,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-09-25 08:53:21,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:21,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:21,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:53:21,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:53:21,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:53:21,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:21,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:21,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:21,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:21,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:21,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:21,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 08:53:21,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:21,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:21,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:21,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:21,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:21,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:53:21,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:53:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:21,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:21,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:21,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:21,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:21,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 08:53:21,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:21,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:21,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:53:21,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:21,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:21,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:21,286 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 08:53:21,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561267576] [2020-09-25 08:53:21,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:21,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 08:53:21,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626137891] [2020-09-25 08:53:21,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:53:21,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:21,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:53:21,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:53:21,289 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-09-25 08:53:21,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:21,396 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-09-25 08:53:21,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 08:53:21,398 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-25 08:53:21,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:21,401 INFO L225 Difference]: With dead ends: 44 [2020-09-25 08:53:21,401 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 08:53:21,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:53:21,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 08:53:21,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-09-25 08:53:21,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 08:53:21,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-25 08:53:21,426 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-25 08:53:21,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:21,427 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-25 08:53:21,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:53:21,427 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-25 08:53:21,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 08:53:21,432 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:21,432 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:21,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:53:21,433 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:21,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:21,433 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 08:53:21,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:21,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68798399] [2020-09-25 08:53:21,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:21,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:21,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:21,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:21,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:22,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:22,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 08:53:22,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:53:22,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-09-25 08:53:22,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:22,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:22,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:53:22,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:53:22,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 08:53:22,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:22,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:22,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:22,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:22,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:22,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:22,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:22,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:22,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:22,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:22,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:22,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:22,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:22,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:22,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:22,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:22,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:22,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:22,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:22,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 08:53:22,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:53:22,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 501 [2020-09-25 08:53:22,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:22,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:22,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:53:22,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:53:22,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 08:53:22,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:22,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:22,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:22,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:22,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:22,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:22,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 08:53:22,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:22,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:22,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:53:22,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:22,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:53:22,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:22,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:53:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:22,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:22,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:22,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:22,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:22,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 08:53:22,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:22,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:22,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:22,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:22,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:22,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:22,680 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 08:53:22,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68798399] [2020-09-25 08:53:22,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:22,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 08:53:22,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048318080] [2020-09-25 08:53:22,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:53:22,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:22,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:53:22,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:53:22,688 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 6 states. [2020-09-25 08:53:22,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:22,874 INFO L93 Difference]: Finished difference Result 88 states and 137 transitions. [2020-09-25 08:53:22,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:53:22,876 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-25 08:53:22,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:22,886 INFO L225 Difference]: With dead ends: 88 [2020-09-25 08:53:22,886 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 08:53:22,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:53:22,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 08:53:22,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-09-25 08:53:22,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 08:53:22,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 69 transitions. [2020-09-25 08:53:22,914 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 69 transitions. Word has length 35 [2020-09-25 08:53:22,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:22,914 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 69 transitions. [2020-09-25 08:53:22,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:53:22,914 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 69 transitions. [2020-09-25 08:53:22,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 08:53:22,923 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:22,923 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:22,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:53:22,924 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:22,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:22,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 1 times [2020-09-25 08:53:22,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:22,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921884686] [2020-09-25 08:53:22,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:22,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:22,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:23,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:23,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:23,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:23,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:23,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:27,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:27,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 08:53:27,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:53:27,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:53:27,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:27,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:27,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:53:27,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:53:27,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 08:53:27,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:27,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:27,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:27,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:27,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:27,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:27,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:27,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:27,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:27,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:27,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:27,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:27,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:27,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:27,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:28,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:28,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:28,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:28,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:28,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:28,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:31,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:31,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 08:53:31,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:53:31,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3760 [2020-09-25 08:53:31,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:31,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:31,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:53:31,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:53:31,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 08:53:31,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:31,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:31,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:31,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:31,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:31,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:53:31,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:31,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 08:53:31,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:31,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:31,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:31,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:31,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:53:31,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:31,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:31,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:31,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:31,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:31,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:31,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:53:31,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:31,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:31,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:53:31,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:31,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:31,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:31,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:53:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:31,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:31,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:31,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:31,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:31,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 08:53:31,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:31,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:31,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:31,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:31,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:31,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:31,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 08:53:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:31,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:31,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:31,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:31,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:31,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:53:31,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:31,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:31,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:31,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:31,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:31,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:31,923 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-25 08:53:31,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921884686] [2020-09-25 08:53:31,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:31,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 08:53:31,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911815902] [2020-09-25 08:53:31,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:53:31,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:31,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:53:31,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:53:31,926 INFO L87 Difference]: Start difference. First operand 50 states and 69 transitions. Second operand 7 states. [2020-09-25 08:53:32,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:32,044 INFO L93 Difference]: Finished difference Result 86 states and 126 transitions. [2020-09-25 08:53:32,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:53:32,044 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 08:53:32,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:32,048 INFO L225 Difference]: With dead ends: 86 [2020-09-25 08:53:32,048 INFO L226 Difference]: Without dead ends: 80 [2020-09-25 08:53:32,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:53:32,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-25 08:53:32,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 74. [2020-09-25 08:53:32,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 08:53:32,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 111 transitions. [2020-09-25 08:53:32,067 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 111 transitions. Word has length 51 [2020-09-25 08:53:32,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:32,067 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 111 transitions. [2020-09-25 08:53:32,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:53:32,068 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 111 transitions. [2020-09-25 08:53:32,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 08:53:32,070 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:32,070 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:32,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:53:32,071 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:32,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:32,071 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-25 08:53:32,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:32,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389529821] [2020-09-25 08:53:32,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:32,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:32,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:32,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:33,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:33,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 08:53:33,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:53:33,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1650 [2020-09-25 08:53:33,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:33,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:33,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:53:33,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:53:33,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 08:53:33,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:33,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:33,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:33,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:33,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:33,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:33,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:33,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:33,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:33,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:33,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:33,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:33,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:33,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:33,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:35,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:35,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 08:53:35,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:53:35,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1676 [2020-09-25 08:53:35,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:35,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:35,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:53:35,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:53:35,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 08:53:35,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:35,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:35,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:35,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:35,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:35,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 08:53:35,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:35,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-09-25 08:53:35,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:35,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:35,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:35,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:35,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 08:53:35,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:35,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:35,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:35,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:35,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:35,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:35,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:53:35,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:35,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:35,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:35,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:35,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:35,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:35,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:53:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:35,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:35,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:35,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:35,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:35,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:53:35,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:35,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:35,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:53:35,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:35,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:35,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:35,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 08:53:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:35,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:35,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:35,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:35,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:35,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:53:35,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:35,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:35,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:35,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:35,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:35,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:35,848 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 29 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 08:53:35,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389529821] [2020-09-25 08:53:35,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:35,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 08:53:35,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772830350] [2020-09-25 08:53:35,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:53:35,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:35,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:53:35,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:53:35,851 INFO L87 Difference]: Start difference. First operand 74 states and 111 transitions. Second operand 8 states. [2020-09-25 08:53:36,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:36,124 INFO L93 Difference]: Finished difference Result 116 states and 202 transitions. [2020-09-25 08:53:36,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:53:36,125 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-09-25 08:53:36,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:36,138 INFO L225 Difference]: With dead ends: 116 [2020-09-25 08:53:36,138 INFO L226 Difference]: Without dead ends: 110 [2020-09-25 08:53:36,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:53:36,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-25 08:53:36,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 96. [2020-09-25 08:53:36,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-25 08:53:36,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 165 transitions. [2020-09-25 08:53:36,168 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 165 transitions. Word has length 52 [2020-09-25 08:53:36,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:36,169 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 165 transitions. [2020-09-25 08:53:36,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:53:36,169 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 165 transitions. [2020-09-25 08:53:36,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 08:53:36,173 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:36,173 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:36,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:53:36,174 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:36,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:36,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1437641953, now seen corresponding path program 3 times [2020-09-25 08:53:36,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:36,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132752535] [2020-09-25 08:53:36,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:36,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:36,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:36,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:36,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:36,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:36,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:36,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:36,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:36,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:37,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:37,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:37,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:37,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:41,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 08:53:41,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 08:53:41,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-09-25 08:53:41,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:41,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:41,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:53:41,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 08:53:41,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 08:53:41,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:41,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:41,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:41,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:41,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:41,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:41,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:41,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:41,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:41,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:41,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:41,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:41,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:41,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:41,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:42,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:42,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:42,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:42,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:42,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:42,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:42,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:46,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:46,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 08:53:46,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 08:53:46,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 08:53:46,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:46,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:46,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:53:46,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 08:53:46,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 08:53:46,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:46,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:46,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:46,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:46,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:46,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:47,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:47,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 08:53:47,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:53:47,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 720 [2020-09-25 08:53:47,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:47,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:47,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:53:47,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:53:47,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 08:53:47,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:47,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:47,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:47,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:47,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:47,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:53:47,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:47,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 08:53:47,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:47,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:47,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:53:47,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:47,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:53:47,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:47,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:47,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:47,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:47,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:47,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:47,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:53:47,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:47,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:47,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:53:47,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:47,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:47,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:47,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:53:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:47,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:47,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:47,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:47,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:47,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:53:47,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:47,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:47,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:53:47,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:47,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:53:47,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:47,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 08:53:47,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:47,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:47,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:47,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:47,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:47,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:53:47,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:47,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:47,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:53:47,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:53:47,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:47,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:47,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 08:53:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:47,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:47,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:47,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:47,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:47,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:47,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:47,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:48,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:48,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:50,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:52,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 08:53:52,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 08:53:52,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 08:53:52,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:52,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 08:53:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:52,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:52,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:52,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:52,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:53,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:53,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 08:53:53,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:53:53,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1035 [2020-09-25 08:53:53,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:53,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:53,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:53,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:53,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:53,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:53,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:53,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:53,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:53,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:53,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:53:53,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:53,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 08:53:53,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:53,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:53,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:53,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:53,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:53,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:53,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:53:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:53,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:53,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:53,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:53,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:53,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:53:53,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:53,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:53,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:53,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:53,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:53,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:53,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:53:53,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:53,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:53,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:53,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:53,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:53,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:53:53,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:53,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:53,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:53,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:53,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:53,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:53,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 08:53:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:53,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:53,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:53,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:53,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:53,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:53:53,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:53,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:53,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:53,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:53,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:53,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:53,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 08:53:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:53,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:53,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:53,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:53:53,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:53,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:53:53,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:53,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:53,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:53,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:53,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:53,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:53,390 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 76 proven. 147 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2020-09-25 08:53:53,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132752535] [2020-09-25 08:53:53,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:53,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 08:53:53,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114208187] [2020-09-25 08:53:53,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:53:53,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:53,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:53:53,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:53:53,395 INFO L87 Difference]: Start difference. First operand 96 states and 165 transitions. Second operand 8 states. [2020-09-25 08:53:53,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:53,545 INFO L93 Difference]: Finished difference Result 196 states and 367 transitions. [2020-09-25 08:53:53,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:53:53,545 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 121 [2020-09-25 08:53:53,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:53,548 INFO L225 Difference]: With dead ends: 196 [2020-09-25 08:53:53,548 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 08:53:53,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:53:53,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 08:53:53,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 90. [2020-09-25 08:53:53,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-25 08:53:53,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 133 transitions. [2020-09-25 08:53:53,571 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 133 transitions. Word has length 121 [2020-09-25 08:53:53,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:53,571 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 133 transitions. [2020-09-25 08:53:53,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:53:53,571 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 133 transitions. [2020-09-25 08:53:53,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 08:53:53,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:53,576 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:53,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:53:53,580 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:53,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:53,580 INFO L82 PathProgramCache]: Analyzing trace with hash -527666429, now seen corresponding path program 4 times [2020-09-25 08:53:53,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:53,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748640079] [2020-09-25 08:53:53,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:53,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:53,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:53,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:53,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:53,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:53,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:53,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:54,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:55,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:55,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:55,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:58,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:58,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 08:53:58,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 08:53:58,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 08:53:58,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:58,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:58,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:53:58,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 08:53:58,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 08:53:58,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:58,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:58,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:58,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:58,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:58,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:58,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:58,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:58,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:58,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:58,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:58,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:58,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:58,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:53:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:58,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:58,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:58,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:58,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:58,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:58,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:59,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:59,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:01,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:01,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:03,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:03,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 08:54:03,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 08:54:03,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:54:03,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:03,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:54:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-25 08:54:03,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:54:03,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:03,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:03,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:03,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:03,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:03,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:04,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:04,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 08:54:04,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:54:04,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-09-25 08:54:04,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:04,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:04,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:04,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:04,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:04,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:04,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:04,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:04,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:04,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:04,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:04,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:54:04,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:04,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:04,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:04,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:04,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:04,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:04,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:54:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:04,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:04,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:04,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 08:54:04,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:04,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:54:04,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:04,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:04,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:04,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:04,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:04,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:04,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:04,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:04,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:04,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:04,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:04,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:54:04,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:04,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:04,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:04,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:04,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:04,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:04,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:54:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:04,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:04,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:04,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:04,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:04,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:54:04,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:04,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:04,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:04,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:04,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:04,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:04,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 08:54:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:04,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:04,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:04,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:04,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:04,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:04,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:06,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 08:54:06,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:54:06,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2024 [2020-09-25 08:54:06,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:06,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:06,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:54:06,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:54:06,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 08:54:06,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:06,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:06,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:06,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 08:54:06,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:54:06,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 563 [2020-09-25 08:54:06,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:06,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:06,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:54:06,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:06,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 08:54:06,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:06,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:06,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:06,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:06,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:06,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:06,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:54:06,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:06,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:06,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:06,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:06,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:06,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:06,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:54:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:06,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:06,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:07,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:07,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 08:54:07,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:54:07,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-25 08:54:07,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:07,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:07,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:54:07,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:07,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 08:54:07,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:07,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:07,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:07,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:07,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:07,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:07,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:54:07,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 08:54:07,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:07,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:07,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:54:07,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:07,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:54:07,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:07,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:54:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:07,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:07,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:07,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:07,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:07,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:54:07,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:07,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:07,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:07,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:07,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:54:07,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:07,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 08:54:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:07,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:07,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:07,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:07,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:07,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 08:54:07,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:07,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:07,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:54:07,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:54:07,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:07,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:07,220 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 251 proven. 21 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-09-25 08:54:07,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748640079] [2020-09-25 08:54:07,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:54:07,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 08:54:07,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672452852] [2020-09-25 08:54:07,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:54:07,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:07,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:54:07,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:54:07,223 INFO L87 Difference]: Start difference. First operand 90 states and 133 transitions. Second operand 8 states. [2020-09-25 08:54:07,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:07,526 INFO L93 Difference]: Finished difference Result 286 states and 588 transitions. [2020-09-25 08:54:07,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 08:54:07,528 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2020-09-25 08:54:07,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:07,534 INFO L225 Difference]: With dead ends: 286 [2020-09-25 08:54:07,534 INFO L226 Difference]: Without dead ends: 202 [2020-09-25 08:54:07,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-09-25 08:54:07,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-25 08:54:07,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 178. [2020-09-25 08:54:07,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-25 08:54:07,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 351 transitions. [2020-09-25 08:54:07,574 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 351 transitions. Word has length 123 [2020-09-25 08:54:07,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:07,575 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 351 transitions. [2020-09-25 08:54:07,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:54:07,575 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 351 transitions. [2020-09-25 08:54:07,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 08:54:07,586 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:07,586 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:54:07,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 08:54:07,586 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:07,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:07,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 5 times [2020-09-25 08:54:07,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:07,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681845571] [2020-09-25 08:54:07,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:07,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:07,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:07,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:07,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:07,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:07,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:08,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:08,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:08,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:09,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:09,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking...