/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:26:09,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:26:09,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:26:09,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:26:09,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:26:09,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:26:09,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:26:09,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:26:09,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:26:09,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:26:09,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:26:09,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:26:09,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:26:09,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:26:09,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:26:09,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:26:09,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:26:09,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:26:09,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:26:09,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:26:09,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:26:09,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:26:09,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:26:09,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:26:09,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:26:09,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:26:09,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:26:09,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:26:09,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:26:09,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:26:09,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:26:09,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:26:09,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:26:09,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:26:09,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:26:09,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:26:09,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:26:09,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:26:09,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:26:09,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:26:09,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:26:09,647 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 19:26:09,699 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:26:09,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:26:09,701 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:26:09,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:26:09,702 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:26:09,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:26:09,702 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:26:09,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:26:09,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:26:09,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:26:09,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:26:09,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:26:09,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:26:09,705 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:26:09,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:26:09,705 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:26:09,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:26:09,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:26:09,706 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:26:09,706 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:26:09,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:26:09,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:26:09,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:26:09,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:26:09,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:26:09,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:26:09,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:26:09,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:26:09,708 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:26:09,709 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:26:10,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:26:10,227 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:26:10,232 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:26:10,235 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:26:10,235 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:26:10,237 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label52.c [2020-09-24 19:26:10,330 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87c9f72dd/32fec6a60cc64835bde64e2539d960ee/FLAG05d7c1887 [2020-09-24 19:26:10,987 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:26:10,988 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label52.c [2020-09-24 19:26:11,004 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87c9f72dd/32fec6a60cc64835bde64e2539d960ee/FLAG05d7c1887 [2020-09-24 19:26:11,215 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87c9f72dd/32fec6a60cc64835bde64e2539d960ee [2020-09-24 19:26:11,230 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:26:11,237 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:26:11,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:26:11,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:26:11,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:26:11,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:26:11" (1/1) ... [2020-09-24 19:26:11,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:11, skipping insertion in model container [2020-09-24 19:26:11,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:26:11" (1/1) ... [2020-09-24 19:26:11,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:26:11,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:26:11,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:26:11,811 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:26:12,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:26:12,070 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:26:12,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:12 WrapperNode [2020-09-24 19:26:12,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:26:12,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:26:12,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:26:12,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:26:12,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:12" (1/1) ... [2020-09-24 19:26:12,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:12" (1/1) ... [2020-09-24 19:26:12,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:12" (1/1) ... [2020-09-24 19:26:12,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:12" (1/1) ... [2020-09-24 19:26:12,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:12" (1/1) ... [2020-09-24 19:26:12,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:12" (1/1) ... [2020-09-24 19:26:12,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:12" (1/1) ... [2020-09-24 19:26:12,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:26:12,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:26:12,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:26:12,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:26:12,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:26:12,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:26:12,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:26:12,329 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:26:12,329 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:26:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:26:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:26:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:26:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:26:12,332 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:26:12,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:26:12,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:26:13,631 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:26:13,632 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:26:13,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:26:13 BoogieIcfgContainer [2020-09-24 19:26:13,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:26:13,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:26:13,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:26:13,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:26:13,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:26:11" (1/3) ... [2020-09-24 19:26:13,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca7549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:26:13, skipping insertion in model container [2020-09-24 19:26:13,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:12" (2/3) ... [2020-09-24 19:26:13,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca7549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:26:13, skipping insertion in model container [2020-09-24 19:26:13,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:26:13" (3/3) ... [2020-09-24 19:26:13,653 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label52.c [2020-09-24 19:26:13,666 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:26:13,683 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:26:13,705 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:26:13,751 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:26:13,752 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:26:13,752 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:26:13,752 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:26:13,752 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:26:13,753 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:26:13,753 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:26:13,753 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:26:13,797 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 19:26:13,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-24 19:26:13,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:13,823 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:13,824 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:13,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:13,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1583508727, now seen corresponding path program 1 times [2020-09-24 19:26:13,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:13,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859035075] [2020-09-24 19:26:13,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:14,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:14,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:15,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:15,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:15,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-24 19:26:15,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:26:15,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1037 [2020-09-24 19:26:15,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:15,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:26:15,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 19:26:15,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-24 19:26:15,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:26:15,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:15,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:15,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:15,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:15,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:15,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 19:26:15,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:15,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:15,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:15,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 19:26:15,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:15,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:26:15,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859035075] [2020-09-24 19:26:15,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:26:15,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:26:15,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049307492] [2020-09-24 19:26:15,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:26:15,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:15,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:26:15,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:26:15,630 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-24 19:26:17,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:17,931 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-24 19:26:17,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:26:17,934 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-24 19:26:17,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:17,961 INFO L225 Difference]: With dead ends: 1268 [2020-09-24 19:26:17,961 INFO L226 Difference]: Without dead ends: 694 [2020-09-24 19:26:17,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:26:18,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-24 19:26:18,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-24 19:26:18,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-24 19:26:18,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-24 19:26:18,093 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 154 [2020-09-24 19:26:18,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:18,095 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-24 19:26:18,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:26:18,095 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-24 19:26:18,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-24 19:26:18,104 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:18,107 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:18,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:26:18,108 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:18,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:18,111 INFO L82 PathProgramCache]: Analyzing trace with hash -81177825, now seen corresponding path program 1 times [2020-09-24 19:26:18,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:18,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070508011] [2020-09-24 19:26:18,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:18,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:18,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:18,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:19,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:19,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:19,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 19:26:19,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:26:19,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1037 [2020-09-24 19:26:19,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:19,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:26:19,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 19:26:19,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:26:19,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:19,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:19,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:19,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:19,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:19,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:19,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 19:26:19,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:19,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:19,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:19,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 19:26:19,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:26:19,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:19,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:19,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:19,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:26:19,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:19,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 19:26:19,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:19,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:19,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:19,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:26:19,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-24 19:26:19,589 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:26:19,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070508011] [2020-09-24 19:26:19,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:26:19,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:26:19,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440473979] [2020-09-24 19:26:19,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:19,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:19,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:19,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:19,598 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-24 19:26:22,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:22,144 INFO L93 Difference]: Finished difference Result 1555 states and 1945 transitions. [2020-09-24 19:26:22,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:26:22,145 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-09-24 19:26:22,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:22,152 INFO L225 Difference]: With dead ends: 1555 [2020-09-24 19:26:22,153 INFO L226 Difference]: Without dead ends: 976 [2020-09-24 19:26:22,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:26:22,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2020-09-24 19:26:22,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 908. [2020-09-24 19:26:22,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 908 states. [2020-09-24 19:26:22,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1107 transitions. [2020-09-24 19:26:22,221 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1107 transitions. Word has length 175 [2020-09-24 19:26:22,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:22,223 INFO L479 AbstractCegarLoop]: Abstraction has 908 states and 1107 transitions. [2020-09-24 19:26:22,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:22,224 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1107 transitions. [2020-09-24 19:26:22,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-24 19:26:22,234 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:22,236 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:22,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:26:22,236 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:22,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:22,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1469093243, now seen corresponding path program 1 times [2020-09-24 19:26:22,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:22,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920065304] [2020-09-24 19:26:22,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:22,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:22,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:22,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:23,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:23,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-24 19:26:23,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:26:23,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:26:23,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:23,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:26:23,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 19:26:23,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:26:23,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:23,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:23,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:23,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:23,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:23,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:23,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 19:26:23,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:23,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:23,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:23,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:26:23,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:23,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:23,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:23,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:23,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:26:23,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:23,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 19:26:23,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:23,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:23,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:23,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 19:26:23,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:23,553 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:26:23,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920065304] [2020-09-24 19:26:23,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:26:23,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:26:23,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451056015] [2020-09-24 19:26:23,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:23,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:23,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:23,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:23,556 INFO L87 Difference]: Start difference. First operand 908 states and 1107 transitions. Second operand 7 states. [2020-09-24 19:26:26,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:26,116 INFO L93 Difference]: Finished difference Result 2575 states and 3288 transitions. [2020-09-24 19:26:26,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:26:26,117 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-09-24 19:26:26,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:26,133 INFO L225 Difference]: With dead ends: 2575 [2020-09-24 19:26:26,133 INFO L226 Difference]: Without dead ends: 1691 [2020-09-24 19:26:26,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:26:26,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2020-09-24 19:26:26,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1568. [2020-09-24 19:26:26,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-09-24 19:26:26,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 1937 transitions. [2020-09-24 19:26:26,229 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 1937 transitions. Word has length 176 [2020-09-24 19:26:26,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:26,229 INFO L479 AbstractCegarLoop]: Abstraction has 1568 states and 1937 transitions. [2020-09-24 19:26:26,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:26,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 1937 transitions. [2020-09-24 19:26:26,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-24 19:26:26,238 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:26,238 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:26,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:26:26,238 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:26,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:26,239 INFO L82 PathProgramCache]: Analyzing trace with hash -231794110, now seen corresponding path program 1 times [2020-09-24 19:26:26,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:26,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334399315] [2020-09-24 19:26:26,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:26,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:26,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:26,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:27,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:27,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-24 19:26:27,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:26:27,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-24 19:26:27,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:27,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:26:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 19:26:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 19:26:27,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:27,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:27,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:27,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:27,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:27,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:27,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 19:26:27,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:27,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:26:27,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:27,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:26:27,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:27,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:27,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:27,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:27,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:26:27,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:27,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-24 19:26:27,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:27,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:27,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:27,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:26:27,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:27,770 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:26:27,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334399315] [2020-09-24 19:26:27,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:26:27,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 19:26:27,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595120541] [2020-09-24 19:26:27,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:26:27,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:27,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:26:27,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:26:27,773 INFO L87 Difference]: Start difference. First operand 1568 states and 1937 transitions. Second operand 8 states. [2020-09-24 19:26:31,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:31,019 INFO L93 Difference]: Finished difference Result 3824 states and 4779 transitions. [2020-09-24 19:26:31,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 19:26:31,020 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 183 [2020-09-24 19:26:31,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:31,031 INFO L225 Difference]: With dead ends: 3824 [2020-09-24 19:26:31,031 INFO L226 Difference]: Without dead ends: 2280 [2020-09-24 19:26:31,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-24 19:26:31,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2280 states. [2020-09-24 19:26:31,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2280 to 2193. [2020-09-24 19:26:31,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2193 states. [2020-09-24 19:26:31,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 2686 transitions. [2020-09-24 19:26:31,107 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 2686 transitions. Word has length 183 [2020-09-24 19:26:31,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:31,108 INFO L479 AbstractCegarLoop]: Abstraction has 2193 states and 2686 transitions. [2020-09-24 19:26:31,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:26:31,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 2686 transitions. [2020-09-24 19:26:31,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-24 19:26:31,118 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:31,118 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:31,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:26:31,119 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:31,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:31,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1075803564, now seen corresponding path program 1 times [2020-09-24 19:26:31,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:31,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697845484] [2020-09-24 19:26:31,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:31,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:31,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:31,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:32,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:32,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:32,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-24 19:26:32,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:32,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-09-24 19:26:32,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:32,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:32,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 19:26:32,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:26:32,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:32,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:32,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:32,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:32,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:32,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:32,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:26:32,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:32,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:32,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:32,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:32,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:32,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:32,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:32,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:32,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:26:32,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:32,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 19:26:32,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:32,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:32,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:32,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:26:32,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:32,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 19:26:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:32,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:32,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:32,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:26:32,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:32,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 19:26:32,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:32,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:32,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:32,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 19:26:32,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:32,543 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:26:32,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697845484] [2020-09-24 19:26:32,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:32,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:32,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034640890] [2020-09-24 19:26:32,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:32,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:32,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:32,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:32,546 INFO L87 Difference]: Start difference. First operand 2193 states and 2686 transitions. Second operand 7 states. [2020-09-24 19:26:34,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:34,755 INFO L93 Difference]: Finished difference Result 4678 states and 5880 transitions. [2020-09-24 19:26:34,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:26:34,757 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 197 [2020-09-24 19:26:34,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:34,771 INFO L225 Difference]: With dead ends: 4678 [2020-09-24 19:26:34,771 INFO L226 Difference]: Without dead ends: 2650 [2020-09-24 19:26:34,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:26:34,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2650 states. [2020-09-24 19:26:34,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2650 to 2626. [2020-09-24 19:26:34,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2626 states. [2020-09-24 19:26:34,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2626 states to 2626 states and 3227 transitions. [2020-09-24 19:26:34,852 INFO L78 Accepts]: Start accepts. Automaton has 2626 states and 3227 transitions. Word has length 197 [2020-09-24 19:26:34,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:34,852 INFO L479 AbstractCegarLoop]: Abstraction has 2626 states and 3227 transitions. [2020-09-24 19:26:34,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:34,853 INFO L276 IsEmpty]: Start isEmpty. Operand 2626 states and 3227 transitions. [2020-09-24 19:26:34,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-24 19:26:34,864 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:34,864 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:34,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:26:34,865 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:34,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:34,865 INFO L82 PathProgramCache]: Analyzing trace with hash 950948741, now seen corresponding path program 1 times [2020-09-24 19:26:34,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:34,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960450217] [2020-09-24 19:26:34,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:34,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:35,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:35,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:35,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:35,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:35,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-24 19:26:35,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:35,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-24 19:26:35,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:26:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 19:26:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 19:26:35,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:36,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:36,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:36,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:36,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:36,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:36,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 19:26:36,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:36,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:36,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:36,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:36,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:36,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:36,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:36,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:36,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:26:36,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:36,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 19:26:36,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:36,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:26:36,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:36,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:26:36,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:36,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 19:26:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:36,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:36,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:36,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:26:36,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:36,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-24 19:26:36,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:36,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:36,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:36,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:26:36,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:36,452 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:26:36,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960450217] [2020-09-24 19:26:36,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:36,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:26:36,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893994944] [2020-09-24 19:26:36,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:26:36,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:36,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:26:36,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:26:36,457 INFO L87 Difference]: Start difference. First operand 2626 states and 3227 transitions. Second operand 8 states. [2020-09-24 19:26:37,143 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-09-24 19:26:40,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:40,142 INFO L93 Difference]: Finished difference Result 5908 states and 7280 transitions. [2020-09-24 19:26:40,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 19:26:40,142 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 200 [2020-09-24 19:26:40,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:40,160 INFO L225 Difference]: With dead ends: 5908 [2020-09-24 19:26:40,161 INFO L226 Difference]: Without dead ends: 3447 [2020-09-24 19:26:40,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-09-24 19:26:40,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2020-09-24 19:26:40,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 3374. [2020-09-24 19:26:40,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3374 states. [2020-09-24 19:26:40,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3374 states to 3374 states and 4084 transitions. [2020-09-24 19:26:40,261 INFO L78 Accepts]: Start accepts. Automaton has 3374 states and 4084 transitions. Word has length 200 [2020-09-24 19:26:40,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:40,262 INFO L479 AbstractCegarLoop]: Abstraction has 3374 states and 4084 transitions. [2020-09-24 19:26:40,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:26:40,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3374 states and 4084 transitions. [2020-09-24 19:26:40,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-24 19:26:40,275 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:40,275 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:40,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:26:40,276 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:40,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:40,276 INFO L82 PathProgramCache]: Analyzing trace with hash -422908273, now seen corresponding path program 1 times [2020-09-24 19:26:40,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:40,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923651115] [2020-09-24 19:26:40,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:40,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:40,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:40,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:41,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:41,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:41,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:41,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-24 19:26:41,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:26:41,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-09-24 19:26:41,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:41,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:41,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 19:26:41,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 19:26:41,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:41,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:41,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:41,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:41,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:41,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:41,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:26:41,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:41,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:41,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:41,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:41,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:41,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:41,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:41,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:41,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:26:41,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:41,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 19:26:41,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:41,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:41,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:41,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:26:41,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:41,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 19:26:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:41,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:41,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:41,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 19:26:41,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:41,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 19:26:41,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:41,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:41,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:41,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 19:26:41,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:41,761 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:26:41,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923651115] [2020-09-24 19:26:41,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:41,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:41,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304275636] [2020-09-24 19:26:41,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:41,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:41,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:41,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:41,765 INFO L87 Difference]: Start difference. First operand 3374 states and 4084 transitions. Second operand 7 states. [2020-09-24 19:26:44,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:44,266 INFO L93 Difference]: Finished difference Result 7565 states and 9379 transitions. [2020-09-24 19:26:44,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:26:44,267 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-09-24 19:26:44,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:44,289 INFO L225 Difference]: With dead ends: 7565 [2020-09-24 19:26:44,290 INFO L226 Difference]: Without dead ends: 4356 [2020-09-24 19:26:44,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:26:44,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4356 states. [2020-09-24 19:26:44,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4356 to 4282. [2020-09-24 19:26:44,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4282 states. [2020-09-24 19:26:44,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4282 states to 4282 states and 5112 transitions. [2020-09-24 19:26:44,469 INFO L78 Accepts]: Start accepts. Automaton has 4282 states and 5112 transitions. Word has length 205 [2020-09-24 19:26:44,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:44,469 INFO L479 AbstractCegarLoop]: Abstraction has 4282 states and 5112 transitions. [2020-09-24 19:26:44,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:44,469 INFO L276 IsEmpty]: Start isEmpty. Operand 4282 states and 5112 transitions. [2020-09-24 19:26:44,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-24 19:26:44,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:44,485 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:44,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:26:44,485 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:44,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:44,486 INFO L82 PathProgramCache]: Analyzing trace with hash 724805752, now seen corresponding path program 1 times [2020-09-24 19:26:44,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:44,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387670302] [2020-09-24 19:26:44,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:44,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:44,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:44,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:45,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:45,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:45,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-09-24 19:26:45,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:45,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:26:45,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:45,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:45,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-09-24 19:26:45,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-24 19:26:45,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:45,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:45,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:45,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:45,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:45,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:45,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:26:45,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:45,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:45,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:45,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:45,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:45,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:45,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:45,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:45,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 19:26:45,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:45,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 19:26:45,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:45,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:45,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:45,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 19:26:45,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:45,909 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:26:45,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387670302] [2020-09-24 19:26:45,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:45,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:26:45,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978789946] [2020-09-24 19:26:45,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:26:45,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:45,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:26:45,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:26:45,913 INFO L87 Difference]: Start difference. First operand 4282 states and 5112 transitions. Second operand 5 states. [2020-09-24 19:26:47,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:47,552 INFO L93 Difference]: Finished difference Result 5171 states and 6323 transitions. [2020-09-24 19:26:47,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:26:47,552 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-09-24 19:26:47,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:47,575 INFO L225 Difference]: With dead ends: 5171 [2020-09-24 19:26:47,575 INFO L226 Difference]: Without dead ends: 5169 [2020-09-24 19:26:47,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:26:47,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5169 states. [2020-09-24 19:26:47,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5169 to 4568. [2020-09-24 19:26:47,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4568 states. [2020-09-24 19:26:47,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4568 states to 4568 states and 5547 transitions. [2020-09-24 19:26:47,688 INFO L78 Accepts]: Start accepts. Automaton has 4568 states and 5547 transitions. Word has length 204 [2020-09-24 19:26:47,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:47,689 INFO L479 AbstractCegarLoop]: Abstraction has 4568 states and 5547 transitions. [2020-09-24 19:26:47,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:26:47,689 INFO L276 IsEmpty]: Start isEmpty. Operand 4568 states and 5547 transitions. [2020-09-24 19:26:47,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-09-24 19:26:47,707 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:47,707 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:47,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:26:47,708 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:47,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:47,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1693391754, now seen corresponding path program 1 times [2020-09-24 19:26:47,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:47,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827943715] [2020-09-24 19:26:47,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:47,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:47,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:48,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:48,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:48,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:48,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:48,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-09-24 19:26:48,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:26:48,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1030 [2020-09-24 19:26:48,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:48,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:48,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-24 19:26:48,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 19:26:48,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:48,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:48,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:48,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:48,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:48,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:48,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:26:48,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:48,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:48,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:48,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:48,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:48,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:48,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:48,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:48,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:26:48,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:48,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:26:48,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:48,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:48,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:48,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:48,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:48,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 19:26:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:48,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:48,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:48,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 19:26:48,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:48,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 19:26:48,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:48,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:48,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:48,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:26:48,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:48,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-24 19:26:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:49,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:49,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:49,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 19:26:49,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:49,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 19:26:49,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:49,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:49,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:49,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 19:26:49,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:49,145 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 19:26:49,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827943715] [2020-09-24 19:26:49,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:49,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:49,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725465664] [2020-09-24 19:26:49,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:49,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:49,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:49,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:49,148 INFO L87 Difference]: Start difference. First operand 4568 states and 5547 transitions. Second operand 7 states. [2020-09-24 19:26:51,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:51,642 INFO L93 Difference]: Finished difference Result 9581 states and 11620 transitions. [2020-09-24 19:26:51,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:26:51,643 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2020-09-24 19:26:51,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:51,665 INFO L225 Difference]: With dead ends: 9581 [2020-09-24 19:26:51,665 INFO L226 Difference]: Without dead ends: 5178 [2020-09-24 19:26:51,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:26:51,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5178 states. [2020-09-24 19:26:51,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5178 to 4568. [2020-09-24 19:26:51,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4568 states. [2020-09-24 19:26:51,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4568 states to 4568 states and 5547 transitions. [2020-09-24 19:26:51,788 INFO L78 Accepts]: Start accepts. Automaton has 4568 states and 5547 transitions. Word has length 233 [2020-09-24 19:26:51,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:51,789 INFO L479 AbstractCegarLoop]: Abstraction has 4568 states and 5547 transitions. [2020-09-24 19:26:51,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:51,789 INFO L276 IsEmpty]: Start isEmpty. Operand 4568 states and 5547 transitions. [2020-09-24 19:26:51,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-09-24 19:26:51,809 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:51,810 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:51,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:26:51,810 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:51,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:51,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1183899599, now seen corresponding path program 1 times [2020-09-24 19:26:51,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:51,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244919420] [2020-09-24 19:26:51,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:51,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:52,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:52,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:52,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:52,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-09-24 19:26:52,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:26:52,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1025 [2020-09-24 19:26:52,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:52,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:26:52,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-09-24 19:26:52,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 19:26:52,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:52,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:53,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:53,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:53,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:53,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:53,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:26:53,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:53,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:53,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:53,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:53,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:53,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:53,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:53,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:53,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 19:26:53,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:53,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 19:26:53,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:53,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:53,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:53,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 19:26:53,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:53,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-24 19:26:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:53,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:53,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:53,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:53,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 19:26:53,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:26:53,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-24 19:26:53,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:53,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:26:53,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:53,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:26:53,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:53,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-24 19:26:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:53,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:53,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:53,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 19:26:53,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:53,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 19:26:53,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:53,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:53,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:53,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 19:26:53,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:53,507 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 146 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-24 19:26:53,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244919420] [2020-09-24 19:26:53,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:53,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:26:53,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863597311] [2020-09-24 19:26:53,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:26:53,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:53,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:26:53,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:26:53,511 INFO L87 Difference]: Start difference. First operand 4568 states and 5547 transitions. Second operand 8 states. [2020-09-24 19:26:55,000 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-09-24 19:26:56,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:56,765 INFO L93 Difference]: Finished difference Result 10447 states and 13006 transitions. [2020-09-24 19:26:56,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 19:26:56,766 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 277 [2020-09-24 19:26:56,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:56,786 INFO L225 Difference]: With dead ends: 10447 [2020-09-24 19:26:56,786 INFO L226 Difference]: Without dead ends: 5885 [2020-09-24 19:26:56,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-09-24 19:26:56,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5885 states. [2020-09-24 19:26:56,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5885 to 5416. [2020-09-24 19:26:56,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5416 states. [2020-09-24 19:26:56,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5416 states to 5416 states and 6595 transitions. [2020-09-24 19:26:56,919 INFO L78 Accepts]: Start accepts. Automaton has 5416 states and 6595 transitions. Word has length 277 [2020-09-24 19:26:56,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:56,920 INFO L479 AbstractCegarLoop]: Abstraction has 5416 states and 6595 transitions. [2020-09-24 19:26:56,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:26:56,920 INFO L276 IsEmpty]: Start isEmpty. Operand 5416 states and 6595 transitions. [2020-09-24 19:26:56,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-09-24 19:26:56,944 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:56,945 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:56,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:26:56,946 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:56,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:56,946 INFO L82 PathProgramCache]: Analyzing trace with hash -258901867, now seen corresponding path program 1 times [2020-09-24 19:26:56,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:56,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229732055] [2020-09-24 19:26:56,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:57,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:57,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:57,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:58,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:58,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-09-24 19:26:58,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:26:58,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:26:58,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:58,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:26:58,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-24 19:26:58,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 19:26:58,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:58,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:58,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:58,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:58,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:58,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:58,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:26:58,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:58,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:58,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:58,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:58,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:58,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:26:58,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:58,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:26:58,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:58,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:58,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:58,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:58,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:58,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 19:26:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:58,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:58,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:58,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 19:26:58,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:58,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 19:26:58,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:58,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:58,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:58,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 19:26:58,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:58,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-09-24 19:26:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:58,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:58,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:58,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:58,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:26:58,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:26:58,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 19:26:58,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:58,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:26:58,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:58,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:26:58,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:58,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 19:26:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:58,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:58,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:58,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:26:58,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:58,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 19:26:58,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:58,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:58,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:58,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:26:58,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:58,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-24 19:26:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:58,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:58,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:58,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:26:58,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:58,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 19:26:58,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:58,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:58,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 19:26:58,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:58,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:58,697 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 228 proven. 18 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-09-24 19:26:58,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229732055] [2020-09-24 19:26:58,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:58,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:26:58,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16082791] [2020-09-24 19:26:58,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:26:58,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:58,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:26:58,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:26:58,700 INFO L87 Difference]: Start difference. First operand 5416 states and 6595 transitions. Second operand 8 states. [2020-09-24 19:26:58,965 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62