/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/Problem10_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:28:53,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:28:53,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:28:53,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:28:53,525 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:28:53,526 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:28:53,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:28:53,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:28:53,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:28:53,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:28:53,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:28:53,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:28:53,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:28:53,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:28:53,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:28:53,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:28:53,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:28:53,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:28:53,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:28:53,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:28:53,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:28:53,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:28:53,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:28:53,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:28:53,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:28:53,554 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:28:53,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:28:53,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:28:53,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:28:53,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:28:53,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:28:53,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:28:53,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:28:53,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:28:53,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:28:53,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:28:53,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:28:53,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:28:53,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:28:53,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:28:53,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:28:53,567 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 19:28:53,593 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:28:53,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:28:53,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:28:53,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:28:53,595 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:28:53,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:28:53,596 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:28:53,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:28:53,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:28:53,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:28:53,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:28:53,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:28:53,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:28:53,597 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:28:53,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:28:53,598 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:28:53,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:28:53,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:28:53,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:28:53,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:28:53,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:28:53,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:28:53,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:28:53,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:28:53,600 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:28:53,600 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:28:53,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:28:53,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:28:53,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:28:53,601 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 19:28:54,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:28:54,061 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:28:54,066 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:28:54,068 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:28:54,069 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:28:54,070 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-09-24 19:28:54,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3107da962/b8d1d9f4c54c4caba2c3e6d95db7ec54/FLAGa6e304f79 [2020-09-24 19:28:54,791 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:28:54,792 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-09-24 19:28:54,806 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3107da962/b8d1d9f4c54c4caba2c3e6d95db7ec54/FLAGa6e304f79 [2020-09-24 19:28:55,040 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3107da962/b8d1d9f4c54c4caba2c3e6d95db7ec54 [2020-09-24 19:28:55,055 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:28:55,062 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:28:55,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:28:55,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:28:55,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:28:55,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:28:55" (1/1) ... [2020-09-24 19:28:55,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c1a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:55, skipping insertion in model container [2020-09-24 19:28:55,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:28:55" (1/1) ... [2020-09-24 19:28:55,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:28:55,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:28:55,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:28:55,583 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:28:55,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:28:55,859 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:28:55,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:55 WrapperNode [2020-09-24 19:28:55,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:28:55,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:28:55,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:28:55,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:28:55,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:55" (1/1) ... [2020-09-24 19:28:55,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:55" (1/1) ... [2020-09-24 19:28:55,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:55" (1/1) ... [2020-09-24 19:28:55,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:55" (1/1) ... [2020-09-24 19:28:55,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:55" (1/1) ... [2020-09-24 19:28:55,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:55" (1/1) ... [2020-09-24 19:28:55,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:55" (1/1) ... [2020-09-24 19:28:55,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:28:55,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:28:55,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:28:55,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:28:55,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:55" (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 19:28:56,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:28:56,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:28:56,119 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:28:56,120 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:28:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:28:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:28:56,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:28:56,121 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:28:56,122 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:28:56,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:28:56,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:28:57,961 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:28:57,961 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:28:57,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:28:57 BoogieIcfgContainer [2020-09-24 19:28:57,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:28:57,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:28:57,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:28:57,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:28:57,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:28:55" (1/3) ... [2020-09-24 19:28:57,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e7fb60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:28:57, skipping insertion in model container [2020-09-24 19:28:57,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:55" (2/3) ... [2020-09-24 19:28:57,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e7fb60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:28:57, skipping insertion in model container [2020-09-24 19:28:57,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:28:57" (3/3) ... [2020-09-24 19:28:57,982 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label11.c [2020-09-24 19:28:57,995 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:28:58,007 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:28:58,032 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:28:58,068 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:28:58,068 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:28:58,068 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:28:58,069 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:28:58,069 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:28:58,069 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:28:58,069 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:28:58,069 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:28:58,102 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 19:28:58,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 19:28:58,115 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:28:58,116 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] [2020-09-24 19:28:58,117 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:28:58,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:28:58,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1178337343, now seen corresponding path program 1 times [2020-09-24 19:28:58,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:28:58,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192798223] [2020-09-24 19:28:58,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:28:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:58,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:58,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:58,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:59,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:59,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 19:28:59,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:28:59,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-24 19:28:59,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:59,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:28:59,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 19:28:59,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 19:28:59,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:28:59,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:28:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:59,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:59,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:59,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:28:59,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:59,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 19:28:59,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:59,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:28:59,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:28:59,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:28:59,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:28:59,620 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 19:28:59,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192798223] [2020-09-24 19:28:59,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:28:59,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:28:59,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537571017] [2020-09-24 19:28:59,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:28:59,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:28:59,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:28:59,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:28:59,664 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 19:29:01,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:01,893 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-24 19:29:01,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:29:01,896 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-09-24 19:29:01,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:01,919 INFO L225 Difference]: With dead ends: 1089 [2020-09-24 19:29:01,920 INFO L226 Difference]: Without dead ends: 575 [2020-09-24 19:29:01,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:29:01,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-24 19:29:02,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-24 19:29:02,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-24 19:29:02,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-24 19:29:02,035 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 80 [2020-09-24 19:29:02,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:02,036 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-24 19:29:02,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:29:02,036 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-24 19:29:02,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-24 19:29:02,045 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:02,046 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, 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] [2020-09-24 19:29:02,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:29:02,047 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:02,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:02,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1494862159, now seen corresponding path program 1 times [2020-09-24 19:29:02,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:02,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997998463] [2020-09-24 19:29:02,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:02,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:02,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:02,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:02,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:03,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:03,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-24 19:29:03,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:29:03,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-09-24 19:29:03,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:03,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:03,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-24 19:29:03,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 19:29:03,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:03,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:03,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:03,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:03,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:03,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:03,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:29:03,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:03,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:03,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:03,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:03,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:03,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:03,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:03,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:03,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:29:03,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:03,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-24 19:29:03,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:03,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:03,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:03,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 19:29:03,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 19:29:03,506 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:29:03,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997998463] [2020-09-24 19:29:03,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:03,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:29:03,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070871938] [2020-09-24 19:29:03,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:29:03,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:03,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:29:03,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:29:03,511 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 5 states. [2020-09-24 19:29:05,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:05,276 INFO L93 Difference]: Finished difference Result 861 states and 1069 transitions. [2020-09-24 19:29:05,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:29:05,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-09-24 19:29:05,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:05,288 INFO L225 Difference]: With dead ends: 861 [2020-09-24 19:29:05,288 INFO L226 Difference]: Without dead ends: 859 [2020-09-24 19:29:05,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:29:05,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-24 19:29:05,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 697. [2020-09-24 19:29:05,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-09-24 19:29:05,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 874 transitions. [2020-09-24 19:29:05,334 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 874 transitions. Word has length 159 [2020-09-24 19:29:05,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:05,334 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 874 transitions. [2020-09-24 19:29:05,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:29:05,335 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 874 transitions. [2020-09-24 19:29:05,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-24 19:29:05,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:05,340 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, 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] [2020-09-24 19:29:05,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:29:05,340 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:05,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:05,341 INFO L82 PathProgramCache]: Analyzing trace with hash 243504344, now seen corresponding path program 1 times [2020-09-24 19:29:05,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:05,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552559898] [2020-09-24 19:29:05,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:05,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:05,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:05,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:05,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:06,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:06,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:06,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-24 19:29:06,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:29:06,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:29:06,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:06,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:29:06,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:29:06,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 19:29:06,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:06,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:06,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:06,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:06,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:06,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:06,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 19:29:06,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:06,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:06,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:06,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:29:06,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:29:06,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:06,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:06,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:06,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 19:29:06,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:06,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-24 19:29:06,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:06,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:06,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:06,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 19:29:06,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:06,948 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:29:06,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552559898] [2020-09-24 19:29:06,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:29:06,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 19:29:06,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40952700] [2020-09-24 19:29:06,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:29:06,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:06,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:29:06,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:29:06,954 INFO L87 Difference]: Start difference. First operand 697 states and 874 transitions. Second operand 8 states. [2020-09-24 19:29:08,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:08,829 INFO L93 Difference]: Finished difference Result 1727 states and 2232 transitions. [2020-09-24 19:29:08,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:29:08,830 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 163 [2020-09-24 19:29:08,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:08,839 INFO L225 Difference]: With dead ends: 1727 [2020-09-24 19:29:08,839 INFO L226 Difference]: Without dead ends: 1045 [2020-09-24 19:29:08,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-24 19:29:08,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-09-24 19:29:08,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1009. [2020-09-24 19:29:08,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2020-09-24 19:29:08,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1235 transitions. [2020-09-24 19:29:08,900 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1235 transitions. Word has length 163 [2020-09-24 19:29:08,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:08,903 INFO L479 AbstractCegarLoop]: Abstraction has 1009 states and 1235 transitions. [2020-09-24 19:29:08,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:29:08,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1235 transitions. [2020-09-24 19:29:08,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-24 19:29:08,911 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:08,911 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, 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] [2020-09-24 19:29:08,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:29:08,912 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:08,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:08,913 INFO L82 PathProgramCache]: Analyzing trace with hash -663007827, now seen corresponding path program 1 times [2020-09-24 19:29:08,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:08,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810590348] [2020-09-24 19:29:08,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:09,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:09,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:09,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:09,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:09,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:09,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:09,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-24 19:29:09,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:29:09,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1018 [2020-09-24 19:29:09,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:09,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:09,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-24 19:29:09,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 19:29:09,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:10,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:10,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:10,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:10,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:10,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:10,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:29:10,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:10,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:10,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:10,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:10,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:10,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:10,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:10,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:10,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:29:10,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:10,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-24 19:29:10,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:10,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:10,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:10,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 19:29:10,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:10,312 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:29:10,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810590348] [2020-09-24 19:29:10,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:10,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:29:10,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619877269] [2020-09-24 19:29:10,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:29:10,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:10,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:29:10,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:29:10,316 INFO L87 Difference]: Start difference. First operand 1009 states and 1235 transitions. Second operand 5 states. [2020-09-24 19:29:12,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:12,100 INFO L93 Difference]: Finished difference Result 2321 states and 2855 transitions. [2020-09-24 19:29:12,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:29:12,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-09-24 19:29:12,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:12,112 INFO L225 Difference]: With dead ends: 2321 [2020-09-24 19:29:12,112 INFO L226 Difference]: Without dead ends: 987 [2020-09-24 19:29:12,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:29:12,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-09-24 19:29:12,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 975. [2020-09-24 19:29:12,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 975 states. [2020-09-24 19:29:12,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1171 transitions. [2020-09-24 19:29:12,155 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1171 transitions. Word has length 169 [2020-09-24 19:29:12,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:12,156 INFO L479 AbstractCegarLoop]: Abstraction has 975 states and 1171 transitions. [2020-09-24 19:29:12,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:29:12,156 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1171 transitions. [2020-09-24 19:29:12,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-09-24 19:29:12,161 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:12,161 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:12,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:29:12,163 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:12,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:12,163 INFO L82 PathProgramCache]: Analyzing trace with hash -413320965, now seen corresponding path program 1 times [2020-09-24 19:29:12,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:12,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659648546] [2020-09-24 19:29:12,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:12,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:12,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:12,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:13,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:13,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:13,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-09-24 19:29:13,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:29:13,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-09-24 19:29:13,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:13,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:13,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 19:29:13,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 19:29:13,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:13,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:13,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:13,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:13,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:13,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:13,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:29:13,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:13,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:13,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:13,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:13,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:13,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:13,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:13,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:13,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:29:13,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:13,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 19:29:13,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:13,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:13,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:13,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 19:29:13,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:13,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:29:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:13,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:13,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:13,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 19:29:13,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:13,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-24 19:29:13,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:13,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:13,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:13,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:29:13,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:13,905 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 201 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:29:13,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659648546] [2020-09-24 19:29:13,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:13,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:13,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366413555] [2020-09-24 19:29:13,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:13,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:13,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:13,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:13,908 INFO L87 Difference]: Start difference. First operand 975 states and 1171 transitions. Second operand 7 states. [2020-09-24 19:29:16,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:16,141 INFO L93 Difference]: Finished difference Result 2296 states and 2818 transitions. [2020-09-24 19:29:16,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:29:16,142 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-09-24 19:29:16,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:16,150 INFO L225 Difference]: With dead ends: 2296 [2020-09-24 19:29:16,150 INFO L226 Difference]: Without dead ends: 1336 [2020-09-24 19:29:16,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:29:16,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2020-09-24 19:29:16,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 1156. [2020-09-24 19:29:16,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1156 states. [2020-09-24 19:29:16,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1374 transitions. [2020-09-24 19:29:16,198 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1374 transitions. Word has length 251 [2020-09-24 19:29:16,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:16,199 INFO L479 AbstractCegarLoop]: Abstraction has 1156 states and 1374 transitions. [2020-09-24 19:29:16,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:16,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1374 transitions. [2020-09-24 19:29:16,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-09-24 19:29:16,204 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:16,204 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 19:29:16,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:29:16,205 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:16,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:16,205 INFO L82 PathProgramCache]: Analyzing trace with hash 728499814, now seen corresponding path program 1 times [2020-09-24 19:29:16,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:16,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007208401] [2020-09-24 19:29:16,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:16,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:16,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:16,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:17,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:17,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:17,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-09-24 19:29:17,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:29:17,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1029 [2020-09-24 19:29:17,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:17,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:17,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-24 19:29:17,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 19:29:17,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:17,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:17,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:17,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:17,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:17,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:17,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:29:17,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:17,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:17,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:17,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:17,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:17,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:17,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:29:17,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:17,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 19:29:17,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:17,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:17,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:17,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 19:29:17,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:17,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-24 19:29:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:17,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:17,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:17,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 19:29:17,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:17,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-09-24 19:29:17,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:17,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:17,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:17,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:29:17,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:17,918 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:29:17,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007208401] [2020-09-24 19:29:17,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:17,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:17,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114610734] [2020-09-24 19:29:17,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:17,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:17,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:17,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:17,921 INFO L87 Difference]: Start difference. First operand 1156 states and 1374 transitions. Second operand 7 states. [2020-09-24 19:29:20,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:20,383 INFO L93 Difference]: Finished difference Result 2675 states and 3254 transitions. [2020-09-24 19:29:20,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:29:20,383 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 258 [2020-09-24 19:29:20,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:20,392 INFO L225 Difference]: With dead ends: 2675 [2020-09-24 19:29:20,392 INFO L226 Difference]: Without dead ends: 1534 [2020-09-24 19:29:20,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:29:20,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2020-09-24 19:29:20,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1504. [2020-09-24 19:29:20,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1504 states. [2020-09-24 19:29:20,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 1779 transitions. [2020-09-24 19:29:20,445 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 1779 transitions. Word has length 258 [2020-09-24 19:29:20,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:20,445 INFO L479 AbstractCegarLoop]: Abstraction has 1504 states and 1779 transitions. [2020-09-24 19:29:20,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:20,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 1779 transitions. [2020-09-24 19:29:20,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-09-24 19:29:20,452 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:20,453 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 19:29:20,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:29:20,453 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:20,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:20,454 INFO L82 PathProgramCache]: Analyzing trace with hash -98893272, now seen corresponding path program 1 times [2020-09-24 19:29:20,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:20,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492484037] [2020-09-24 19:29:20,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:20,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:20,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:20,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:21,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:21,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-09-24 19:29:21,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:21,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1048 [2020-09-24 19:29:21,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:21,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:21,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 207 [2020-09-24 19:29:21,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 19:29:21,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:21,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:21,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:21,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:21,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:21,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:21,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:29:21,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:21,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:21,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:21,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:21,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:21,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:21,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:21,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:21,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 19:29:21,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:21,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 19:29:21,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:21,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:21,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:21,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:21,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:21,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 19:29:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:21,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:21,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:21,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 19:29:21,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:21,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-24 19:29:21,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:21,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:21,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:21,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-24 19:29:21,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:22,021 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-09-24 19:29:22,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492484037] [2020-09-24 19:29:22,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:22,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 19:29:22,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002278963] [2020-09-24 19:29:22,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:29:22,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:22,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:29:22,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:29:22,024 INFO L87 Difference]: Start difference. First operand 1504 states and 1779 transitions. Second operand 6 states. [2020-09-24 19:29:23,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:23,608 INFO L93 Difference]: Finished difference Result 1824 states and 2178 transitions. [2020-09-24 19:29:23,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:29:23,609 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 268 [2020-09-24 19:29:23,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:23,619 INFO L225 Difference]: With dead ends: 1824 [2020-09-24 19:29:23,620 INFO L226 Difference]: Without dead ends: 1822 [2020-09-24 19:29:23,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:23,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2020-09-24 19:29:23,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1656. [2020-09-24 19:29:23,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1656 states. [2020-09-24 19:29:23,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 1990 transitions. [2020-09-24 19:29:23,673 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 1990 transitions. Word has length 268 [2020-09-24 19:29:23,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:23,674 INFO L479 AbstractCegarLoop]: Abstraction has 1656 states and 1990 transitions. [2020-09-24 19:29:23,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:29:23,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 1990 transitions. [2020-09-24 19:29:23,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-09-24 19:29:23,681 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:23,681 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:23,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:29:23,682 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:23,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:23,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1232869725, now seen corresponding path program 1 times [2020-09-24 19:29:23,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:23,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526639460] [2020-09-24 19:29:23,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:23,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:23,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:24,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:24,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:24,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:24,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-09-24 19:29:24,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:29:24,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1061 [2020-09-24 19:29:24,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:24,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:24,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-24 19:29:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 19:29:24,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:24,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:24,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:24,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:24,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:24,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:24,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:29:24,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:24,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:24,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:24,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:24,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:24,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:24,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:25,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:25,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:29:25,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:25,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-24 19:29:25,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:25,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:25,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:25,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 19:29:25,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:25,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-24 19:29:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:25,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:25,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:25,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 19:29:25,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:25,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-09-24 19:29:25,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:25,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:25,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:25,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-24 19:29:25,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:25,565 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:29:25,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526639460] [2020-09-24 19:29:25,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:25,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:25,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586803996] [2020-09-24 19:29:25,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:25,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:25,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:25,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:25,568 INFO L87 Difference]: Start difference. First operand 1656 states and 1990 transitions. Second operand 7 states. [2020-09-24 19:29:27,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:27,919 INFO L93 Difference]: Finished difference Result 3759 states and 4685 transitions. [2020-09-24 19:29:27,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:29:27,920 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 295 [2020-09-24 19:29:27,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:27,933 INFO L225 Difference]: With dead ends: 3759 [2020-09-24 19:29:27,934 INFO L226 Difference]: Without dead ends: 2118 [2020-09-24 19:29:27,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:29:27,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2020-09-24 19:29:27,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 1812. [2020-09-24 19:29:27,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1812 states. [2020-09-24 19:29:27,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 2118 transitions. [2020-09-24 19:29:27,998 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 2118 transitions. Word has length 295 [2020-09-24 19:29:27,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:27,999 INFO L479 AbstractCegarLoop]: Abstraction has 1812 states and 2118 transitions. [2020-09-24 19:29:27,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:27,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 2118 transitions. [2020-09-24 19:29:28,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-09-24 19:29:28,006 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:28,006 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:28,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:29:28,007 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:28,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:28,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1874374363, now seen corresponding path program 1 times [2020-09-24 19:29:28,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:28,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808595844] [2020-09-24 19:29:28,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:28,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:28,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:28,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:28,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:29,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:29,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-09-24 19:29:29,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:29:29,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:29:29,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:29:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 19:29:29,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-24 19:29:29,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:29,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:29,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:29,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:29,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:29,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:29,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:29:29,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:29,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:29,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:29,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:29:29,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:29,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:29,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:29,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:29,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 19:29:29,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:29,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-24 19:29:29,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:29,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:29,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:29,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-24 19:29:29,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:29,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 19:29:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:29,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:29,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:29,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 19:29:29,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:29,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 19:29:29,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:29,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:29,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-09-24 19:29:29,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:29,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:29,716 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 128 proven. 82 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 19:29:29,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808595844] [2020-09-24 19:29:29,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:29,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:29,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847202398] [2020-09-24 19:29:29,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:29,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:29,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:29,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:29,724 INFO L87 Difference]: Start difference. First operand 1812 states and 2118 transitions. Second operand 7 states. [2020-09-24 19:29:31,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:31,659 INFO L93 Difference]: Finished difference Result 3783 states and 4420 transitions. [2020-09-24 19:29:31,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 19:29:31,660 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 305 [2020-09-24 19:29:31,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:31,669 INFO L225 Difference]: With dead ends: 3783 [2020-09-24 19:29:31,669 INFO L226 Difference]: Without dead ends: 1986 [2020-09-24 19:29:31,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:29:31,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2020-09-24 19:29:31,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1962. [2020-09-24 19:29:31,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1962 states. [2020-09-24 19:29:31,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2275 transitions. [2020-09-24 19:29:31,726 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2275 transitions. Word has length 305 [2020-09-24 19:29:31,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:31,726 INFO L479 AbstractCegarLoop]: Abstraction has 1962 states and 2275 transitions. [2020-09-24 19:29:31,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:31,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2275 transitions. [2020-09-24 19:29:31,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-09-24 19:29:31,735 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:31,735 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 19:29:31,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:29:31,736 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:31,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:31,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1039525829, now seen corresponding path program 1 times [2020-09-24 19:29:31,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:31,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356328848] [2020-09-24 19:29:31,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:31,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:32,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:32,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:32,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:32,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-09-24 19:29:32,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:32,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:29:32,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:32,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:32,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 141 [2020-09-24 19:29:32,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-24 19:29:32,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:32,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:32,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:32,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:32,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:32,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:32,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:29:32,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:32,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:32,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:32,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:32,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:32,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:32,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:33,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:33,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 19:29:33,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:33,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 19:29:33,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:33,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:33,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:33,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-24 19:29:33,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:33,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 19:29:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:33,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:33,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:33,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 19:29:33,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:33,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-24 19:29:33,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:33,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:33,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:33,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-24 19:29:33,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:33,560 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 246 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:29:33,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356328848] [2020-09-24 19:29:33,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:33,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:33,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54062062] [2020-09-24 19:29:33,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:33,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:33,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:33,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:33,563 INFO L87 Difference]: Start difference. First operand 1962 states and 2275 transitions. Second operand 7 states. [2020-09-24 19:29:35,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:35,851 INFO L93 Difference]: Finished difference Result 3959 states and 4665 transitions. [2020-09-24 19:29:35,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:29:35,851 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 333 [2020-09-24 19:29:35,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:35,866 INFO L225 Difference]: With dead ends: 3959 [2020-09-24 19:29:35,866 INFO L226 Difference]: Without dead ends: 2162 [2020-09-24 19:29:35,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:29:35,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2162 states. [2020-09-24 19:29:35,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2162 to 2124. [2020-09-24 19:29:35,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2124 states. [2020-09-24 19:29:35,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 2414 transitions. [2020-09-24 19:29:35,928 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 2414 transitions. Word has length 333 [2020-09-24 19:29:35,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:35,928 INFO L479 AbstractCegarLoop]: Abstraction has 2124 states and 2414 transitions. [2020-09-24 19:29:35,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:35,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 2414 transitions. [2020-09-24 19:29:35,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-09-24 19:29:35,944 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:35,944 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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] [2020-09-24 19:29:35,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:29:35,945 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:35,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:35,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1989161048, now seen corresponding path program 1 times [2020-09-24 19:29:35,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:35,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240973673] [2020-09-24 19:29:35,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:36,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:36,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:36,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:36,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:37,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:37,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 434 [2020-09-24 19:29:37,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:29:37,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-09-24 19:29:37,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:37,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:37,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 222 [2020-09-24 19:29:37,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-24 19:29:37,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:37,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:37,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:37,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:37,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:37,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:37,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:29:37,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:37,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:37,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:37,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:37,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:37,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:37,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:37,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:37,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 19:29:37,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:37,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 19:29:37,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:37,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:37,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:37,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:37,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:37,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 19:29:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:37,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:37,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:37,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 19:29:37,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:37,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 19:29:37,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:37,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:37,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:37,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 19:29:37,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:37,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-24 19:29:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:37,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:37,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:37,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 19:29:37,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:37,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-24 19:29:37,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:37,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:37,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:37,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 19:29:37,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:37,866 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 392 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-09-24 19:29:37,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240973673] [2020-09-24 19:29:37,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:37,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:37,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917020813] [2020-09-24 19:29:37,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:37,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:37,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:37,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:37,869 INFO L87 Difference]: Start difference. First operand 2124 states and 2414 transitions. Second operand 7 states. [2020-09-24 19:29:40,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:40,366 INFO L93 Difference]: Finished difference Result 5055 states and 5834 transitions. [2020-09-24 19:29:40,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:29:40,369 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 419 [2020-09-24 19:29:40,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:40,382 INFO L225 Difference]: With dead ends: 5055 [2020-09-24 19:29:40,382 INFO L226 Difference]: Without dead ends: 3096 [2020-09-24 19:29:40,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:29:40,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3096 states. [2020-09-24 19:29:40,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3096 to 3061. [2020-09-24 19:29:40,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3061 states. [2020-09-24 19:29:40,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3061 states to 3061 states and 3469 transitions. [2020-09-24 19:29:40,457 INFO L78 Accepts]: Start accepts. Automaton has 3061 states and 3469 transitions. Word has length 419 [2020-09-24 19:29:40,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:40,457 INFO L479 AbstractCegarLoop]: Abstraction has 3061 states and 3469 transitions. [2020-09-24 19:29:40,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:40,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3061 states and 3469 transitions. [2020-09-24 19:29:40,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-09-24 19:29:40,472 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:40,472 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:40,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 19:29:40,473 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:40,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:40,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1861119006, now seen corresponding path program 1 times [2020-09-24 19:29:40,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:40,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53832397] [2020-09-24 19:29:40,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:40,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:40,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:41,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:41,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:41,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 444 [2020-09-24 19:29:41,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:41,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-09-24 19:29:41,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:41,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:29:41,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-09-24 19:29:41,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-24 19:29:41,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:41,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:41,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:41,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:41,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:41,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:41,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:29:41,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:41,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:41,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:41,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:41,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:41,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:41,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:41,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:41,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 19:29:41,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:41,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-09-24 19:29:41,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:41,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:41,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:41,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-24 19:29:41,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:42,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 19:29:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:42,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking...