/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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:25:54,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:25:54,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:25:54,188 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:25:54,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:25:54,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:25:54,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:25:54,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:25:54,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:25:54,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:25:54,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:25:54,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:25:54,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:25:54,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:25:54,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:25:54,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:25:54,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:25:54,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:25:54,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:25:54,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:25:54,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:25:54,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:25:54,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:25:54,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:25:54,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:25:54,250 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:25:54,250 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:25:54,251 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:25:54,252 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:25:54,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:25:54,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:25:54,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:25:54,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:25:54,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:25:54,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:25:54,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:25:54,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:25:54,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:25:54,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:25:54,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:25:54,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:25:54,263 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 [2020-09-24 18:25:54,307 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:25:54,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:25:54,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:25:54,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:25:54,309 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:25:54,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:25:54,310 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:25:54,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:25:54,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:25:54,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:25:54,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:25:54,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:25:54,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:25:54,311 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:25:54,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:25:54,312 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:25:54,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:25:54,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:25:54,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:25:54,313 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:25:54,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:25:54,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:25:54,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:25:54,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:25:54,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:25:54,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:25:54,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:25:54,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:25:54,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:25:54,315 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:25:54,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:25:54,768 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:25:54,773 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:25:54,775 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:25:54,777 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:25:54,778 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label21.c [2020-09-24 18:25:54,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1a688c39/2309aff97b1f4a3495fdf8064d66e586/FLAG82637bb24 [2020-09-24 18:25:55,526 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:25:55,527 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label21.c [2020-09-24 18:25:55,543 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1a688c39/2309aff97b1f4a3495fdf8064d66e586/FLAG82637bb24 [2020-09-24 18:25:55,759 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1a688c39/2309aff97b1f4a3495fdf8064d66e586 [2020-09-24 18:25:55,772 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:25:55,780 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:25:55,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:25:55,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:25:55,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:25:55,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:25:55" (1/1) ... [2020-09-24 18:25:55,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3028f779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:55, skipping insertion in model container [2020-09-24 18:25:55,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:25:55" (1/1) ... [2020-09-24 18:25:55,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:25:55,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:25:56,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:25:56,488 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:25:56,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:25:56,813 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:25:56,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:56 WrapperNode [2020-09-24 18:25:56,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:25:56,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:25:56,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:25:56,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:25:56,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:56" (1/1) ... [2020-09-24 18:25:56,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:56" (1/1) ... [2020-09-24 18:25:56,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:56" (1/1) ... [2020-09-24 18:25:56,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:56" (1/1) ... [2020-09-24 18:25:56,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:56" (1/1) ... [2020-09-24 18:25:56,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:56" (1/1) ... [2020-09-24 18:25:57,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:56" (1/1) ... [2020-09-24 18:25:57,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:25:57,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:25:57,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:25:57,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:25:57,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:56" (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 [2020-09-24 18:25:57,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:25:57,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:25:57,172 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:25:57,173 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:25:57,173 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:25:57,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:25:57,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:25:57,174 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:25:57,175 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:25:57,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:25:57,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:25:59,035 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:25:59,036 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:25:59,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:25:59 BoogieIcfgContainer [2020-09-24 18:25:59,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:25:59,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:25:59,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:25:59,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:25:59,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:25:55" (1/3) ... [2020-09-24 18:25:59,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3906f65b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:25:59, skipping insertion in model container [2020-09-24 18:25:59,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:56" (2/3) ... [2020-09-24 18:25:59,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3906f65b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:25:59, skipping insertion in model container [2020-09-24 18:25:59,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:25:59" (3/3) ... [2020-09-24 18:25:59,065 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label21.c [2020-09-24 18:25:59,080 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:25:59,096 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:25:59,117 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:25:59,155 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:25:59,156 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:25:59,156 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:25:59,156 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:25:59,156 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:25:59,156 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:25:59,156 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:25:59,157 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:25:59,206 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-24 18:25:59,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 18:25:59,220 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:59,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:25:59,222 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:59,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:59,230 INFO L82 PathProgramCache]: Analyzing trace with hash -2130690894, now seen corresponding path program 1 times [2020-09-24 18:25:59,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:59,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416793534] [2020-09-24 18:25:59,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:59,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:59,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:00,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:00,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 18:26:00,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:26:00,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 612 [2020-09-24 18:26:00,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:00,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:26:00,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 18:26:00,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 18:26:00,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:26:00,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:00,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:00,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:00,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:26:00,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:00,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 18:26:00,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:00,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:26:00,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:00,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:26:00,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:00,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:26:00,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416793534] [2020-09-24 18:26:00,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:26:00,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:26:00,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516918434] [2020-09-24 18:26:00,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:26:00,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:00,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:26:00,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:26:00,292 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 5 states. [2020-09-24 18:26:04,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:04,233 INFO L93 Difference]: Finished difference Result 1766 states and 2493 transitions. [2020-09-24 18:26:04,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:26:04,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-09-24 18:26:04,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:04,265 INFO L225 Difference]: With dead ends: 1766 [2020-09-24 18:26:04,266 INFO L226 Difference]: Without dead ends: 1025 [2020-09-24 18:26:04,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:26:04,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2020-09-24 18:26:04,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 995. [2020-09-24 18:26:04,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-09-24 18:26:04,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1343 transitions. [2020-09-24 18:26:04,411 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1343 transitions. Word has length 53 [2020-09-24 18:26:04,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:04,412 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1343 transitions. [2020-09-24 18:26:04,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:26:04,412 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1343 transitions. [2020-09-24 18:26:04,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-24 18:26:04,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:04,422 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:26:04,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:26:04,422 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:04,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:04,423 INFO L82 PathProgramCache]: Analyzing trace with hash -815962305, now seen corresponding path program 1 times [2020-09-24 18:26:04,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:04,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920905097] [2020-09-24 18:26:04,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:04,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:04,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:05,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:05,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:07,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:07,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:09,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:09,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-24 18:26:09,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:26:09,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:26:09,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:09,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:09,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-24 18:26:09,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 18:26:09,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:09,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:09,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:09,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:09,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:26:09,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:09,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:26:09,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:09,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:26:09,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:09,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:26:09,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:09,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:26:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:09,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:09,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:09,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 18:26:09,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:09,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-24 18:26:09,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:09,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:26:09,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:09,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 18:26:09,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 18:26:09,844 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:26:09,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920905097] [2020-09-24 18:26:09,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:26:09,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:26:09,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160456156] [2020-09-24 18:26:09,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:26:09,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:09,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:26:09,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:26:09,850 INFO L87 Difference]: Start difference. First operand 995 states and 1343 transitions. Second operand 5 states. [2020-09-24 18:26:12,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:12,570 INFO L93 Difference]: Finished difference Result 2640 states and 3731 transitions. [2020-09-24 18:26:12,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:26:12,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-09-24 18:26:12,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:12,586 INFO L225 Difference]: With dead ends: 2640 [2020-09-24 18:26:12,586 INFO L226 Difference]: Without dead ends: 1660 [2020-09-24 18:26:12,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:26:12,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2020-09-24 18:26:12,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1218. [2020-09-24 18:26:12,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1218 states. [2020-09-24 18:26:12,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1650 transitions. [2020-09-24 18:26:12,677 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1650 transitions. Word has length 137 [2020-09-24 18:26:12,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:12,680 INFO L479 AbstractCegarLoop]: Abstraction has 1218 states and 1650 transitions. [2020-09-24 18:26:12,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:26:12,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1650 transitions. [2020-09-24 18:26:12,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 18:26:12,692 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:12,692 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:26:12,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:26:12,693 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:12,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:12,693 INFO L82 PathProgramCache]: Analyzing trace with hash -738903594, now seen corresponding path program 1 times [2020-09-24 18:26:12,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:12,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978781942] [2020-09-24 18:26:12,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:12,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:12,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:13,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:13,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:14,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:14,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:14,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:16,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:16,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-24 18:26:16,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:26:16,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4203 [2020-09-24 18:26:16,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:16,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:16,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-09-24 18:26:16,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 18:26:16,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:17,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:17,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:17,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:17,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:26:17,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:17,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:26:17,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:17,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:26:17,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:17,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:26:17,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:17,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:26:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:17,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:17,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:17,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:26:17,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:17,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-24 18:26:17,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:17,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:26:17,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:17,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 18:26:17,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:17,246 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:26:17,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978781942] [2020-09-24 18:26:17,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:26:17,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:26:17,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326784207] [2020-09-24 18:26:17,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:26:17,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:17,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:26:17,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:26:17,249 INFO L87 Difference]: Start difference. First operand 1218 states and 1650 transitions. Second operand 5 states. [2020-09-24 18:26:20,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:20,239 INFO L93 Difference]: Finished difference Result 2843 states and 3975 transitions. [2020-09-24 18:26:20,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:26:20,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-24 18:26:20,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:20,257 INFO L225 Difference]: With dead ends: 2843 [2020-09-24 18:26:20,257 INFO L226 Difference]: Without dead ends: 1640 [2020-09-24 18:26:20,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:26:20,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2020-09-24 18:26:20,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1411. [2020-09-24 18:26:20,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1411 states. [2020-09-24 18:26:20,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1949 transitions. [2020-09-24 18:26:20,328 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1949 transitions. Word has length 142 [2020-09-24 18:26:20,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:20,330 INFO L479 AbstractCegarLoop]: Abstraction has 1411 states and 1949 transitions. [2020-09-24 18:26:20,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:26:20,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1949 transitions. [2020-09-24 18:26:20,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-24 18:26:20,334 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:20,334 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:26:20,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:26:20,340 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:20,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:20,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1135519942, now seen corresponding path program 1 times [2020-09-24 18:26:20,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:20,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502896658] [2020-09-24 18:26:20,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:20,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:20,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:21,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:22,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:23,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:24,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:24,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-24 18:26:24,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:26:24,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3675 [2020-09-24 18:26:24,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-09-24 18:26:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 18:26:24,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:24,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:24,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:24,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:24,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:26:24,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:24,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:26:24,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:24,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:26:24,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:24,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:26:24,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:24,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:26:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:24,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:24,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:24,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 18:26:24,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:24,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 18:26:24,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:24,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:26:24,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:24,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-24 18:26:24,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:24,329 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:26:24,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502896658] [2020-09-24 18:26:24,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:26:24,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:26:24,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378067724] [2020-09-24 18:26:24,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:26:24,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:24,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:26:24,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:26:24,336 INFO L87 Difference]: Start difference. First operand 1411 states and 1949 transitions. Second operand 5 states. [2020-09-24 18:26:27,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:27,776 INFO L93 Difference]: Finished difference Result 3939 states and 5654 transitions. [2020-09-24 18:26:27,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:26:27,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-09-24 18:26:27,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:27,792 INFO L225 Difference]: With dead ends: 3939 [2020-09-24 18:26:27,792 INFO L226 Difference]: Without dead ends: 2543 [2020-09-24 18:26:27,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:26:27,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2543 states. [2020-09-24 18:26:27,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2543 to 1984. [2020-09-24 18:26:27,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1984 states. [2020-09-24 18:26:27,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1984 states to 1984 states and 2736 transitions. [2020-09-24 18:26:27,880 INFO L78 Accepts]: Start accepts. Automaton has 1984 states and 2736 transitions. Word has length 155 [2020-09-24 18:26:27,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:27,881 INFO L479 AbstractCegarLoop]: Abstraction has 1984 states and 2736 transitions. [2020-09-24 18:26:27,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:26:27,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1984 states and 2736 transitions. [2020-09-24 18:26:27,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-24 18:26:27,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:27,891 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:26:27,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:26:27,892 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:27,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:27,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1516772977, now seen corresponding path program 1 times [2020-09-24 18:26:27,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:27,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828347067] [2020-09-24 18:26:27,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:27,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:28,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:28,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:30,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:31,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:32,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:32,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-09-24 18:26:32,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:26:32,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 18:26:32,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:32,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:26:32,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:26:32,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-09-24 18:26:32,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:33,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:33,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:33,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:33,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:26:33,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:33,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:26:33,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:33,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:26:33,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:33,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:26:33,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:33,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:26:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:33,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:33,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:33,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-24 18:26:33,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:33,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-09-24 18:26:33,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:33,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:33,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:26:33,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-09-24 18:26:33,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 18:26:34,011 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:26:34,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828347067] [2020-09-24 18:26:34,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:26:34,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:26:34,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281343680] [2020-09-24 18:26:34,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:26:34,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:34,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:26:34,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:26:34,015 INFO L87 Difference]: Start difference. First operand 1984 states and 2736 transitions. Second operand 7 states. [2020-09-24 18:26:37,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:37,399 INFO L93 Difference]: Finished difference Result 4661 states and 6599 transitions. [2020-09-24 18:26:37,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:26:37,400 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2020-09-24 18:26:37,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:37,418 INFO L225 Difference]: With dead ends: 4661 [2020-09-24 18:26:37,418 INFO L226 Difference]: Without dead ends: 2692 [2020-09-24 18:26:37,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:26:37,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2020-09-24 18:26:37,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 2382. [2020-09-24 18:26:37,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2382 states. [2020-09-24 18:26:37,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3244 transitions. [2020-09-24 18:26:37,516 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 3244 transitions. Word has length 241 [2020-09-24 18:26:37,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:37,517 INFO L479 AbstractCegarLoop]: Abstraction has 2382 states and 3244 transitions. [2020-09-24 18:26:37,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:26:37,517 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 3244 transitions. [2020-09-24 18:26:37,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-09-24 18:26:37,529 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:37,529 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:26:37,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:26:37,530 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:37,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:37,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1225113658, now seen corresponding path program 1 times [2020-09-24 18:26:37,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:37,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122419172] [2020-09-24 18:26:37,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:37,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:37,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:37,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:37,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:38,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:39,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:41,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:42,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:42,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:42,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-09-24 18:26:42,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:26:42,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-24 18:26:42,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:42,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:42,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 18:26:42,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-09-24 18:26:42,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:42,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:42,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:42,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:42,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:26:42,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:42,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:26:42,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:42,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:26:42,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:42,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:26:42,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:42,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:26:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:42,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:42,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:42,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 18:26:42,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:42,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 18:26:42,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:42,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:26:42,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:42,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 18:26:42,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:42,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 18:26:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:42,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:43,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:43,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-24 18:26:43,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:43,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-09-24 18:26:43,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:43,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:43,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:26:43,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-09-24 18:26:43,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:43,755 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:26:43,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122419172] [2020-09-24 18:26:43,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:26:43,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:26:43,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542507623] [2020-09-24 18:26:43,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:26:43,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:43,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:26:43,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:26:43,760 INFO L87 Difference]: Start difference. First operand 2382 states and 3244 transitions. Second operand 7 states.