/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=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test25-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:40:30,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:40:30,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:40:30,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:40:30,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:40:30,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:40:30,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:40:30,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:40:30,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:40:30,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:40:30,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:40:30,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:40:30,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:40:30,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:40:30,424 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:40:30,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:40:30,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:40:30,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:40:30,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:40:30,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:40:30,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:40:30,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:40:30,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:40:30,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:40:30,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:40:30,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:40:30,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:40:30,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:40:30,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:40:30,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:40:30,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:40:30,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:40:30,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:40:30,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:40:30,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:40:30,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:40:30,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:40:30,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:40:30,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:40:30,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:40:30,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:40:30,464 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 06:40:30,518 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:40:30,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:40:30,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:40:30,520 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:40:30,520 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:40:30,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:40:30,521 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:40:30,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:40:30,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:40:30,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:40:30,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:40:30,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:40:30,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:40:30,524 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:40:30,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:40:30,524 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:40:30,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:40:30,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:40:30,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:40:30,525 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:40:30,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:40:30,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:40:30,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:40:30,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:40:30,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:40:30,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:40:30,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:40:30,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:40:30,528 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:40:30,528 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:40:31,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:40:31,032 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:40:31,036 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:40:31,038 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:40:31,039 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:40:31,040 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test25-2.c [2020-09-25 06:40:31,131 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7099e8376/b938cbad04794600a8b7190ddee617fe/FLAGf7c7f8441 [2020-09-25 06:40:31,713 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:40:31,714 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test25-2.c [2020-09-25 06:40:31,723 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7099e8376/b938cbad04794600a8b7190ddee617fe/FLAGf7c7f8441 [2020-09-25 06:40:32,050 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7099e8376/b938cbad04794600a8b7190ddee617fe [2020-09-25 06:40:32,063 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:40:32,069 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:40:32,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:40:32,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:40:32,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:40:32,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:40:32" (1/1) ... [2020-09-25 06:40:32,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88af870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:32, skipping insertion in model container [2020-09-25 06:40:32,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:40:32" (1/1) ... [2020-09-25 06:40:32,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:40:32,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:40:32,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:40:32,361 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:40:32,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:40:32,401 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:40:32,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:32 WrapperNode [2020-09-25 06:40:32,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:40:32,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:40:32,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:40:32,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:40:32,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:32" (1/1) ... [2020-09-25 06:40:32,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:32" (1/1) ... [2020-09-25 06:40:32,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:32" (1/1) ... [2020-09-25 06:40:32,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:32" (1/1) ... [2020-09-25 06:40:32,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:32" (1/1) ... [2020-09-25 06:40:32,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:32" (1/1) ... [2020-09-25 06:40:32,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:32" (1/1) ... [2020-09-25 06:40:32,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:40:32,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:40:32,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:40:32,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:40:32,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:32" (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 06:40:32,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:40:32,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:40:32,621 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-25 06:40:32,621 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:40:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:40:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:40:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 06:40:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 06:40:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 06:40:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:40:32,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 06:40:32,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 06:40:32,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 06:40:32,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 06:40:32,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:40:32,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:40:33,029 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:40:33,029 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 06:40:33,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:40:33 BoogieIcfgContainer [2020-09-25 06:40:33,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:40:33,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:40:33,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:40:33,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:40:33,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:40:32" (1/3) ... [2020-09-25 06:40:33,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c8dfe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:40:33, skipping insertion in model container [2020-09-25 06:40:33,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:32" (2/3) ... [2020-09-25 06:40:33,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c8dfe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:40:33, skipping insertion in model container [2020-09-25 06:40:33,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:40:33" (3/3) ... [2020-09-25 06:40:33,045 INFO L109 eAbstractionObserver]: Analyzing ICFG test25-2.c [2020-09-25 06:40:33,056 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:40:33,068 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:40:33,092 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:40:33,125 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:40:33,125 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:40:33,125 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:40:33,125 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:40:33,126 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:40:33,126 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:40:33,126 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:40:33,126 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:40:33,149 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2020-09-25 06:40:33,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 06:40:33,157 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:40:33,159 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] [2020-09-25 06:40:33,159 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:40:33,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:40:33,166 INFO L82 PathProgramCache]: Analyzing trace with hash 144198137, now seen corresponding path program 1 times [2020-09-25 06:40:33,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:40:33,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436673755] [2020-09-25 06:40:33,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:40:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:33,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:33,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:33,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:33,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 06:40:33,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:40:33,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-09-25 06:40:33,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:33,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:33,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:33,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-25 06:40:33,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:33,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 06:40:33,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:40:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:33,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:33,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:33,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:40:33,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:33,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:40:33,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:33,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:33,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:33,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:33,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:40:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:33,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:33,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:33,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 06:40:33,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:33,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 06:40:33,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:33,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:33,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:33,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:40:33,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:33,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:33,865 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 06:40:33,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436673755] [2020-09-25 06:40:33,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:40:33,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 06:40:33,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099263971] [2020-09-25 06:40:33,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 06:40:33,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:40:33,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 06:40:33,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:40:33,902 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 3 states. [2020-09-25 06:40:34,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:40:34,090 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-09-25 06:40:34,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 06:40:34,093 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-09-25 06:40:34,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:40:34,108 INFO L225 Difference]: With dead ends: 124 [2020-09-25 06:40:34,108 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 06:40:34,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:40:34,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 06:40:34,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-25 06:40:34,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 06:40:34,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-09-25 06:40:34,172 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 44 [2020-09-25 06:40:34,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:40:34,173 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-09-25 06:40:34,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 06:40:34,173 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-09-25 06:40:34,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 06:40:34,176 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:40:34,176 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] [2020-09-25 06:40:34,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:40:34,177 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:40:34,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:40:34,178 INFO L82 PathProgramCache]: Analyzing trace with hash 608042528, now seen corresponding path program 1 times [2020-09-25 06:40:34,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:40:34,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943891356] [2020-09-25 06:40:34,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:40:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:34,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:34,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:35,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:35,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 06:40:35,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:40:35,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 816 [2020-09-25 06:40:35,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:35,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:35,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:40:35,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 06:40:35,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 06:40:35,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:35,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:40:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:35,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:35,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:35,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:40:35,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:35,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:40:35,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:35,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:35,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:35,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:35,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:35,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:35,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-25 06:40:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:35,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:35,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:35,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 06:40:35,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:35,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:40:35,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:35,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:35,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:35,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:40:35,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:35,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:35,095 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 06:40:35,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943891356] [2020-09-25 06:40:35,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:40:35,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:40:35,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942155134] [2020-09-25 06:40:35,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:40:35,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:40:35,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:40:35,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:40:35,100 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 4 states. [2020-09-25 06:40:35,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:40:35,229 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2020-09-25 06:40:35,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 06:40:35,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-25 06:40:35,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:40:35,232 INFO L225 Difference]: With dead ends: 104 [2020-09-25 06:40:35,232 INFO L226 Difference]: Without dead ends: 69 [2020-09-25 06:40:35,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:40:35,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-25 06:40:35,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 61. [2020-09-25 06:40:35,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 06:40:35,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2020-09-25 06:40:35,243 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 46 [2020-09-25 06:40:35,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:40:35,244 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2020-09-25 06:40:35,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:40:35,244 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2020-09-25 06:40:35,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 06:40:35,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:40:35,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:40:35,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:40:35,247 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:40:35,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:40:35,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1644606330, now seen corresponding path program 1 times [2020-09-25 06:40:35,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:40:35,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730031966] [2020-09-25 06:40:35,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:40:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:35,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:35,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:36,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:36,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 06:40:36,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:40:36,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1390 [2020-09-25 06:40:36,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:36,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:36,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:40:36,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 06:40:36,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 06:40:36,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:36,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:40:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:36,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:36,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:36,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:40:36,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:36,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:40:36,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:36,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:36,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:36,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:36,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:36,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:36,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 06:40:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:36,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:36,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:36,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 06:40:36,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:36,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:40:36,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:36,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:36,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:36,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:40:36,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:36,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:36,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:40:36,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730031966] [2020-09-25 06:40:36,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:40:36,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:40:36,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612174456] [2020-09-25 06:40:36,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:40:36,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:40:36,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:40:36,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:40:36,764 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 6 states. [2020-09-25 06:40:36,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:40:36,997 INFO L93 Difference]: Finished difference Result 114 states and 116 transitions. [2020-09-25 06:40:36,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:40:36,997 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-09-25 06:40:36,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:40:37,000 INFO L225 Difference]: With dead ends: 114 [2020-09-25 06:40:37,000 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 06:40:37,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:40:37,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 06:40:37,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 71. [2020-09-25 06:40:37,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-25 06:40:37,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2020-09-25 06:40:37,010 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 56 [2020-09-25 06:40:37,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:40:37,010 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2020-09-25 06:40:37,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:40:37,011 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2020-09-25 06:40:37,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 06:40:37,012 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:40:37,013 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:40:37,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:40:37,013 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:40:37,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:40:37,014 INFO L82 PathProgramCache]: Analyzing trace with hash 278397012, now seen corresponding path program 2 times [2020-09-25 06:40:37,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:40:37,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137580181] [2020-09-25 06:40:37,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:40:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:37,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:37,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:39,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:39,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:40:39,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:40:39,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2332 [2020-09-25 06:40:39,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:39,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:39,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:40:39,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 06:40:39,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:40:39,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:39,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:40:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:39,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:39,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:39,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:40:39,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:39,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:40:39,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:39,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:39,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:39,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:39,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:39,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:39,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 06:40:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:39,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:39,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:39,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 06:40:39,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:39,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:40:39,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:39,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:39,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:39,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:40:39,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:39,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:39,506 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:40:39,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137580181] [2020-09-25 06:40:39,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:40:39,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:40:39,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85486154] [2020-09-25 06:40:39,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:40:39,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:40:39,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:40:39,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:40:39,511 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 8 states. [2020-09-25 06:40:39,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:40:39,770 INFO L93 Difference]: Finished difference Result 124 states and 126 transitions. [2020-09-25 06:40:39,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:40:39,770 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-09-25 06:40:39,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:40:39,772 INFO L225 Difference]: With dead ends: 124 [2020-09-25 06:40:39,772 INFO L226 Difference]: Without dead ends: 89 [2020-09-25 06:40:39,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:40:39,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-25 06:40:39,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 81. [2020-09-25 06:40:39,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 06:40:39,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2020-09-25 06:40:39,793 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 66 [2020-09-25 06:40:39,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:40:39,795 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2020-09-25 06:40:39,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:40:39,796 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2020-09-25 06:40:39,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 06:40:39,801 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:40:39,801 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:40:39,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:40:39,803 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:40:39,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:40:39,803 INFO L82 PathProgramCache]: Analyzing trace with hash 767198382, now seen corresponding path program 3 times [2020-09-25 06:40:39,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:40:39,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475524843] [2020-09-25 06:40:39,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:40:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:39,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:39,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:43,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:43,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:40:43,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:40:43,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3512 [2020-09-25 06:40:43,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:43,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:43,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:40:43,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 06:40:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 06:40:43,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:40:43,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:40:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:43,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:43,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:43,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:40:43,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:43,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:40:43,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:43,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:43,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:43,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:43,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:43,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:40:43,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-25 06:40:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:43,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:43,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:43,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 06:40:43,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:43,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:40:43,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:43,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:43,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:43,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:40:43,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:43,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:40:43,570 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:40:43,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475524843] [2020-09-25 06:40:43,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:40:43,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 06:40:43,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134207264] [2020-09-25 06:40:43,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:40:43,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:40:43,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:40:43,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:40:43,579 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 10 states. [2020-09-25 06:40:43,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:40:43,914 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2020-09-25 06:40:43,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 06:40:43,915 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 76 [2020-09-25 06:40:43,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:40:43,916 INFO L225 Difference]: With dead ends: 134 [2020-09-25 06:40:43,916 INFO L226 Difference]: Without dead ends: 99 [2020-09-25 06:40:43,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:40:43,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-09-25 06:40:43,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 91. [2020-09-25 06:40:43,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-25 06:40:43,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2020-09-25 06:40:43,935 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 76 [2020-09-25 06:40:43,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:40:43,940 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2020-09-25 06:40:43,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:40:43,941 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2020-09-25 06:40:43,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 06:40:43,942 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:40:43,943 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:40:43,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:40:43,947 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:40:43,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:40:43,947 INFO L82 PathProgramCache]: Analyzing trace with hash 216981640, now seen corresponding path program 4 times [2020-09-25 06:40:43,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:40:43,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836554278] [2020-09-25 06:40:43,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:40:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:43,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:44,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:48,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:48,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 06:40:48,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:40:48,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4421 [2020-09-25 06:40:48,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:48,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:48,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:40:48,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 06:40:48,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:40:48,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:48,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:40:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:48,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:48,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:48,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:40:48,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:48,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:40:48,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:48,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:48,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:48,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:48,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:48,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:48,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-25 06:40:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:48,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:48,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:48,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 06:40:48,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:48,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:40:48,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:48,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:48,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:48,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:40:48,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:48,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:48,583 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:40:48,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836554278] [2020-09-25 06:40:48,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:40:48,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 06:40:48,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102225560] [2020-09-25 06:40:48,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 06:40:48,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:40:48,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 06:40:48,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:40:48,587 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 12 states. [2020-09-25 06:40:48,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:40:48,850 INFO L93 Difference]: Finished difference Result 144 states and 146 transitions. [2020-09-25 06:40:48,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 06:40:48,850 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 86 [2020-09-25 06:40:48,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:40:48,852 INFO L225 Difference]: With dead ends: 144 [2020-09-25 06:40:48,852 INFO L226 Difference]: Without dead ends: 109 [2020-09-25 06:40:48,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-09-25 06:40:48,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-25 06:40:48,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 101. [2020-09-25 06:40:48,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-25 06:40:48,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2020-09-25 06:40:48,869 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 86 [2020-09-25 06:40:48,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:40:48,869 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2020-09-25 06:40:48,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 06:40:48,870 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2020-09-25 06:40:48,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-25 06:40:48,874 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:40:48,874 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:40:48,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:40:48,875 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:40:48,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:40:48,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1855081502, now seen corresponding path program 5 times [2020-09-25 06:40:48,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:40:48,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951114415] [2020-09-25 06:40:48,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:40:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:48,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:49,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:53,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:53,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-25 06:40:53,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:40:53,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 06:40:53,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:53,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:53,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:40:53,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-09-25 06:40:53,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:40:53,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:54,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:40:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:54,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:54,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:54,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:40:54,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:54,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:40:54,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:54,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:54,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:54,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:54,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:54,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:54,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-25 06:40:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:54,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:54,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:54,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 06:40:54,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:54,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:40:54,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:54,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:54,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:54,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:40:54,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:54,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:54,144 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-09-25 06:40:54,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951114415] [2020-09-25 06:40:54,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:40:54,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 06:40:54,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737700189] [2020-09-25 06:40:54,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:40:54,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:40:54,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:40:54,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:40:54,149 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 9 states. [2020-09-25 06:40:54,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:40:54,453 INFO L93 Difference]: Finished difference Result 122 states and 123 transitions. [2020-09-25 06:40:54,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:40:54,454 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-09-25 06:40:54,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:40:54,455 INFO L225 Difference]: With dead ends: 122 [2020-09-25 06:40:54,455 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 06:40:54,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:40:54,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 06:40:54,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2020-09-25 06:40:54,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 06:40:54,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2020-09-25 06:40:54,475 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 96 [2020-09-25 06:40:54,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:40:54,475 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2020-09-25 06:40:54,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:40:54,476 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2020-09-25 06:40:54,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 06:40:54,476 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:40:54,477 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-09-25 06:40:54,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:40:54,477 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:40:54,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:40:54,477 INFO L82 PathProgramCache]: Analyzing trace with hash 213269370, now seen corresponding path program 1 times [2020-09-25 06:40:54,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:40:54,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989808136] [2020-09-25 06:40:54,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:40:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:54,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:54,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:57,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:59,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:59,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 06:40:59,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:40:59,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 06:40:59,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:59,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:59,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 06:40:59,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 06:40:59,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 06:40:59,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:59,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:40:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:59,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:59,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:59,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:40:59,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:59,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:40:59,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:59,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:59,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:59,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:59,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:59,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:59,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 06:40:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:59,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:59,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:59,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 06:40:59,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:59,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:40:59,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:59,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:59,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:59,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:40:59,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:59,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:59,684 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 06:40:59,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989808136] [2020-09-25 06:40:59,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:40:59,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 06:40:59,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533136705] [2020-09-25 06:40:59,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 06:40:59,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:40:59,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 06:40:59,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-09-25 06:40:59,687 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 14 states. [2020-09-25 06:41:00,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:00,010 INFO L93 Difference]: Finished difference Result 158 states and 160 transitions. [2020-09-25 06:41:00,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 06:41:00,011 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 102 [2020-09-25 06:41:00,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:00,013 INFO L225 Difference]: With dead ends: 158 [2020-09-25 06:41:00,013 INFO L226 Difference]: Without dead ends: 121 [2020-09-25 06:41:00,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2020-09-25 06:41:00,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-09-25 06:41:00,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 113. [2020-09-25 06:41:00,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-25 06:41:00,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2020-09-25 06:41:00,036 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 102 [2020-09-25 06:41:00,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:00,037 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2020-09-25 06:41:00,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 06:41:00,037 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2020-09-25 06:41:00,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 06:41:00,038 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:00,041 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2020-09-25 06:41:00,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 06:41:00,041 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:00,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:00,042 INFO L82 PathProgramCache]: Analyzing trace with hash 854006484, now seen corresponding path program 2 times [2020-09-25 06:41:00,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:00,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087015892] [2020-09-25 06:41:00,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:00,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:00,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:04,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:05,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:05,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 06:41:05,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:41:05,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 06:41:05,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:05,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:05,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:41:05,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-09-25 06:41:05,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:41:05,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:05,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:05,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:05,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:05,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:05,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:05,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:41:05,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:05,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:05,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:05,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:05,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:05,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:05,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-25 06:41:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:05,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:05,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:05,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 06:41:05,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:05,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:41:05,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:05,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:05,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:05,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:41:05,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:05,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:05,321 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-09-25 06:41:05,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087015892] [2020-09-25 06:41:05,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:05,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 06:41:05,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71919119] [2020-09-25 06:41:05,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:41:05,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:05,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:41:05,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:41:05,329 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand 10 states. [2020-09-25 06:41:05,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:05,675 INFO L93 Difference]: Finished difference Result 138 states and 139 transitions. [2020-09-25 06:41:05,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 06:41:05,676 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 112 [2020-09-25 06:41:05,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:05,677 INFO L225 Difference]: With dead ends: 138 [2020-09-25 06:41:05,677 INFO L226 Difference]: Without dead ends: 122 [2020-09-25 06:41:05,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-09-25 06:41:05,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-25 06:41:05,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 119. [2020-09-25 06:41:05,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-25 06:41:05,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2020-09-25 06:41:05,684 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 112 [2020-09-25 06:41:05,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:05,685 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2020-09-25 06:41:05,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:41:05,685 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2020-09-25 06:41:05,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-09-25 06:41:05,686 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:05,686 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 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] [2020-09-25 06:41:05,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 06:41:05,686 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:05,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:05,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1397807892, now seen corresponding path program 3 times [2020-09-25 06:41:05,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:05,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891620832] [2020-09-25 06:41:05,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:05,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:05,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:09,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:10,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:10,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-25 06:41:10,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:41:10,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 06:41:10,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:10,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:10,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 06:41:10,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 06:41:10,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 06:41:10,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:10,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:10,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:10,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:10,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:10,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:10,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:41:10,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:10,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:10,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:10,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:10,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:10,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:10,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 06:41:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:10,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:10,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:10,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 06:41:10,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:10,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:41:10,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:10,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:10,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:10,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:41:10,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:10,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:10,951 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 06:41:10,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891620832] [2020-09-25 06:41:10,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:10,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 06:41:10,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590511538] [2020-09-25 06:41:10,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 06:41:10,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:10,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 06:41:10,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:41:10,954 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand 16 states. [2020-09-25 06:41:11,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:11,492 INFO L93 Difference]: Finished difference Result 180 states and 182 transitions. [2020-09-25 06:41:11,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 06:41:11,494 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 118 [2020-09-25 06:41:11,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:11,495 INFO L225 Difference]: With dead ends: 180 [2020-09-25 06:41:11,496 INFO L226 Difference]: Without dead ends: 137 [2020-09-25 06:41:11,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=245, Invalid=511, Unknown=0, NotChecked=0, Total=756 [2020-09-25 06:41:11,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-09-25 06:41:11,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 129. [2020-09-25 06:41:11,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-09-25 06:41:11,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2020-09-25 06:41:11,509 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 118 [2020-09-25 06:41:11,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:11,510 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2020-09-25 06:41:11,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 06:41:11,511 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2020-09-25 06:41:11,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 06:41:11,513 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:11,513 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 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] [2020-09-25 06:41:11,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 06:41:11,514 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:11,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:11,515 INFO L82 PathProgramCache]: Analyzing trace with hash -956690362, now seen corresponding path program 4 times [2020-09-25 06:41:11,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:11,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061797265] [2020-09-25 06:41:11,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:11,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:11,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:16,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:16,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 06:41:16,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:41:16,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 06:41:16,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:16,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:16,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:41:16,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 06:41:16,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:41:16,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:16,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:16,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:16,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:16,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:16,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:16,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:41:16,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:16,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:16,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:16,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:16,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:16,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:16,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 06:41:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:16,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:16,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:16,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 06:41:16,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:16,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:41:16,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:16,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:16,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:16,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:41:16,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:16,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:16,773 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2020-09-25 06:41:16,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061797265] [2020-09-25 06:41:16,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:16,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 06:41:16,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893246871] [2020-09-25 06:41:16,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:41:16,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:16,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:41:16,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:41:16,775 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand 11 states. [2020-09-25 06:41:17,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:17,176 INFO L93 Difference]: Finished difference Result 154 states and 155 transitions. [2020-09-25 06:41:17,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:41:17,177 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 128 [2020-09-25 06:41:17,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:17,178 INFO L225 Difference]: With dead ends: 154 [2020-09-25 06:41:17,179 INFO L226 Difference]: Without dead ends: 138 [2020-09-25 06:41:17,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-09-25 06:41:17,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-25 06:41:17,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 135. [2020-09-25 06:41:17,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-09-25 06:41:17,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2020-09-25 06:41:17,188 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 128 [2020-09-25 06:41:17,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:17,191 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2020-09-25 06:41:17,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:41:17,191 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2020-09-25 06:41:17,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 06:41:17,193 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:17,193 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:17,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 06:41:17,194 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:17,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:17,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1350352094, now seen corresponding path program 5 times [2020-09-25 06:41:17,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:17,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428161346] [2020-09-25 06:41:17,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:17,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:17,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking...