/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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/Problem02_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:08:27,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:08:27,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:08:27,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:08:27,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:08:27,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:08:27,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:08:27,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:08:27,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:08:27,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:08:27,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:08:27,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:08:27,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:08:27,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:08:27,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:08:27,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:08:27,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:08:27,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:08:27,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:08:27,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:08:27,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:08:27,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:08:27,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:08:27,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:08:27,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:08:27,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:08:27,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:08:27,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:08:27,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:08:27,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:08:27,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:08:27,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:08:27,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:08:27,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:08:27,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:08:27,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:08:27,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:08:27,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:08:27,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:08:27,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:08:27,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:08:27,855 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:08:27,880 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:08:27,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:08:27,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:08:27,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:08:27,882 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:08:27,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:08:27,883 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:08:27,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:08:27,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:08:27,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:08:27,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:08:27,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:08:27,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:08:27,884 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:08:27,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:08:27,885 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:08:27,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:08:27,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:08:27,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:08:27,886 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:08:27,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:08:27,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:08:27,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:08:27,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:08:27,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:08:27,887 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:08:27,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:08:27,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:08:27,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:08:27,888 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:08:28,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:08:28,380 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:08:28,385 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:08:28,389 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:08:28,390 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:08:28,391 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label11.c [2020-09-25 10:08:28,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/635b278b2/681d13b7f5164b5287ff227abb917afe/FLAGeb193ac0c [2020-09-25 10:08:29,116 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:08:29,117 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label11.c [2020-09-25 10:08:29,142 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/635b278b2/681d13b7f5164b5287ff227abb917afe/FLAGeb193ac0c [2020-09-25 10:08:29,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/635b278b2/681d13b7f5164b5287ff227abb917afe [2020-09-25 10:08:29,364 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:08:29,370 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:08:29,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:08:29,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:08:29,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:08:29,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:08:29" (1/1) ... [2020-09-25 10:08:29,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5783693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:29, skipping insertion in model container [2020-09-25 10:08:29,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:08:29" (1/1) ... [2020-09-25 10:08:29,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:08:29,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:08:29,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:08:29,955 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:08:30,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:08:30,213 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:08:30,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:30 WrapperNode [2020-09-25 10:08:30,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:08:30,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:08:30,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:08:30,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:08:30,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:30" (1/1) ... [2020-09-25 10:08:30,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:30" (1/1) ... [2020-09-25 10:08:30,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:30" (1/1) ... [2020-09-25 10:08:30,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:30" (1/1) ... [2020-09-25 10:08:30,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:30" (1/1) ... [2020-09-25 10:08:30,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:30" (1/1) ... [2020-09-25 10:08:30,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:30" (1/1) ... [2020-09-25 10:08:30,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:08:30,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:08:30,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:08:30,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:08:30,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:08:30,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:08:30,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:08:30,407 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:08:30,407 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:08:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:08:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:08:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:08:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:08:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:08:30,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:08:30,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:08:31,686 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:08:31,687 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:08:31,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:08:31 BoogieIcfgContainer [2020-09-25 10:08:31,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:08:31,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:08:31,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:08:31,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:08:31,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:08:29" (1/3) ... [2020-09-25 10:08:31,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d3a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:08:31, skipping insertion in model container [2020-09-25 10:08:31,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:30" (2/3) ... [2020-09-25 10:08:31,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d3a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:08:31, skipping insertion in model container [2020-09-25 10:08:31,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:08:31" (3/3) ... [2020-09-25 10:08:31,709 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label11.c [2020-09-25 10:08:31,720 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:08:31,734 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:08:31,756 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:08:31,796 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:08:31,797 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:08:31,797 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:08:31,797 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:08:31,798 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:08:31,798 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:08:31,798 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:08:31,798 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:08:31,838 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:08:31,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 10:08:31,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:31,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:08:31,860 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:31,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:31,868 INFO L82 PathProgramCache]: Analyzing trace with hash 604783425, now seen corresponding path program 1 times [2020-09-25 10:08:31,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:31,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106040551] [2020-09-25 10:08:31,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:32,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:32,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:32,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:32,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:33,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:34,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:35,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:36,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:36,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:37,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:37,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 10:08:37,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:08:37,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 10:08:37,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:37,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:37,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:08:37,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:08:37,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 10:08:37,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 10:08:37,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:37,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:37,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:37,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:08:37,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:37,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 10:08:37,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:37,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:37,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:37,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:37,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:08:37,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:37,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:08:37,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106040551] [2020-09-25 10:08:37,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:08:37,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:08:37,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333876529] [2020-09-25 10:08:37,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:08:37,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:37,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:08:37,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:08:37,552 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 10:08:40,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:40,781 INFO L93 Difference]: Finished difference Result 1539 states and 2132 transitions. [2020-09-25 10:08:40,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:08:40,783 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-09-25 10:08:40,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:40,812 INFO L225 Difference]: With dead ends: 1539 [2020-09-25 10:08:40,812 INFO L226 Difference]: Without dead ends: 935 [2020-09-25 10:08:40,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:08:40,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2020-09-25 10:08:40,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 878. [2020-09-25 10:08:40,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-09-25 10:08:40,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1089 transitions. [2020-09-25 10:08:40,942 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1089 transitions. Word has length 134 [2020-09-25 10:08:40,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:40,943 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1089 transitions. [2020-09-25 10:08:40,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:08:40,943 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1089 transitions. [2020-09-25 10:08:40,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 10:08:40,958 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:40,959 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:08:40,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:08:40,959 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:40,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:40,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1174704491, now seen corresponding path program 1 times [2020-09-25 10:08:40,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:40,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118282036] [2020-09-25 10:08:40,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:41,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:41,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:41,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:42,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:43,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:43,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:43,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:44,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:45,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:45,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:46,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:46,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 10:08:46,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:08:46,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 10:08:46,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:46,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:46,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:08:46,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:08:46,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 10:08:46,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:46,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:46,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:46,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:46,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:46,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:08:46,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:46,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:08:46,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:46,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:46,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:46,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:46,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:08:46,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:46,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:08:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:46,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:46,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:46,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:46,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:08:46,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:08:46,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 10:08:46,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:46,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:46,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:08:46,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:08:46,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:08:46,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:46,307 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:08:46,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118282036] [2020-09-25 10:08:46,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:08:46,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:08:46,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811500856] [2020-09-25 10:08:46,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:08:46,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:46,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:08:46,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:08:46,312 INFO L87 Difference]: Start difference. First operand 878 states and 1089 transitions. Second operand 6 states. [2020-09-25 10:08:48,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:48,146 INFO L93 Difference]: Finished difference Result 2081 states and 2679 transitions. [2020-09-25 10:08:48,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:08:48,147 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2020-09-25 10:08:48,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:48,159 INFO L225 Difference]: With dead ends: 2081 [2020-09-25 10:08:48,160 INFO L226 Difference]: Without dead ends: 1225 [2020-09-25 10:08:48,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:08:48,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2020-09-25 10:08:48,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1024. [2020-09-25 10:08:48,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-09-25 10:08:48,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1297 transitions. [2020-09-25 10:08:48,214 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1297 transitions. Word has length 152 [2020-09-25 10:08:48,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:48,215 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 1297 transitions. [2020-09-25 10:08:48,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:08:48,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1297 transitions. [2020-09-25 10:08:48,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 10:08:48,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:48,221 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:08:48,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:08:48,222 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:48,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:48,222 INFO L82 PathProgramCache]: Analyzing trace with hash -916548164, now seen corresponding path program 1 times [2020-09-25 10:08:48,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:48,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97258153] [2020-09-25 10:08:48,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:48,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:48,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:48,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:48,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:52,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:52,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:53,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:53,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 10:08:53,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:08:53,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 10:08:53,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:53,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:53,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:08:53,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 10:08:53,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 10:08:53,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:53,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:53,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:53,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:53,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:08:53,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:53,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:08:53,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:53,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:53,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:08:53,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:53,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:08:53,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:53,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:08:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:53,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:53,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:53,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 10:08:53,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:53,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 10:08:53,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:53,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:53,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:53,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:53,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 10:08:53,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:53,544 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:08:53,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97258153] [2020-09-25 10:08:53,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:08:53,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:08:53,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576939841] [2020-09-25 10:08:53,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:08:53,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:53,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:08:53,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:08:53,549 INFO L87 Difference]: Start difference. First operand 1024 states and 1297 transitions. Second operand 6 states. [2020-09-25 10:08:56,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:56,353 INFO L93 Difference]: Finished difference Result 3569 states and 4770 transitions. [2020-09-25 10:08:56,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:08:56,359 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2020-09-25 10:08:56,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:56,384 INFO L225 Difference]: With dead ends: 3569 [2020-09-25 10:08:56,385 INFO L226 Difference]: Without dead ends: 2567 [2020-09-25 10:08:56,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:08:56,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2020-09-25 10:08:56,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2306. [2020-09-25 10:08:56,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2306 states. [2020-09-25 10:08:56,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 3053 transitions. [2020-09-25 10:08:56,517 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 3053 transitions. Word has length 168 [2020-09-25 10:08:56,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:56,518 INFO L479 AbstractCegarLoop]: Abstraction has 2306 states and 3053 transitions. [2020-09-25 10:08:56,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:08:56,518 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 3053 transitions. [2020-09-25 10:08:56,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 10:08:56,545 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:56,545 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:08:56,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:08:56,546 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:56,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:56,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1654545545, now seen corresponding path program 1 times [2020-09-25 10:08:56,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:56,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567787711] [2020-09-25 10:08:56,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:56,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:56,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:56,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:57,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:58,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:00,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:00,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:01,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:01,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 10:09:01,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:09:01,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 10:09:01,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:01,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:01,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:09:01,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:09:01,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 10:09:01,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:01,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:01,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:01,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:01,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:01,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:01,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:09:01,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:01,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:01,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:01,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:01,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:09:01,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:01,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:01,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:01,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:01,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:01,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:09:01,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:01,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 10:09:01,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:01,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:01,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:09:01,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:01,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:09:01,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:02,184 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:09:02,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567787711] [2020-09-25 10:09:02,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:02,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:09:02,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225067925] [2020-09-25 10:09:02,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:09:02,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:02,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:09:02,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:09:02,187 INFO L87 Difference]: Start difference. First operand 2306 states and 3053 transitions. Second operand 11 states. [2020-09-25 10:09:05,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:05,546 INFO L93 Difference]: Finished difference Result 4589 states and 6225 transitions. [2020-09-25 10:09:05,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:09:05,547 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 172 [2020-09-25 10:09:05,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:05,560 INFO L225 Difference]: With dead ends: 4589 [2020-09-25 10:09:05,560 INFO L226 Difference]: Without dead ends: 2042 [2020-09-25 10:09:05,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-09-25 10:09:05,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2020-09-25 10:09:05,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 1576. [2020-09-25 10:09:05,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-09-25 10:09:05,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 1946 transitions. [2020-09-25 10:09:05,630 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 1946 transitions. Word has length 172 [2020-09-25 10:09:05,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:05,630 INFO L479 AbstractCegarLoop]: Abstraction has 1576 states and 1946 transitions. [2020-09-25 10:09:05,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:09:05,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 1946 transitions. [2020-09-25 10:09:05,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 10:09:05,636 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:05,637 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:05,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:09:05,637 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:05,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:05,637 INFO L82 PathProgramCache]: Analyzing trace with hash 766948088, now seen corresponding path program 1 times [2020-09-25 10:09:05,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:05,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069558963] [2020-09-25 10:09:05,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:05,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:05,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:05,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:06,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:06,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:08,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:09,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:10,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:10,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 10:09:10,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:09:10,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:09:10,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:10,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:10,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:09:10,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:09:10,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-09-25 10:09:10,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:10,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:10,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:10,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:10,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:10,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:10,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:09:10,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:10,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:10,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:10,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:10,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:09:10,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:10,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:10,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:10,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:10,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:10,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 10:09:10,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:10,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 10:09:10,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:10,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:10,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:09:10,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:09:10,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 10:09:10,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:11,026 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:09:11,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069558963] [2020-09-25 10:09:11,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:11,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:09:11,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815259424] [2020-09-25 10:09:11,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:09:11,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:11,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:09:11,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:09:11,029 INFO L87 Difference]: Start difference. First operand 1576 states and 1946 transitions. Second operand 6 states. [2020-09-25 10:09:12,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:12,618 INFO L93 Difference]: Finished difference Result 4239 states and 5395 transitions. [2020-09-25 10:09:12,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:09:12,618 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2020-09-25 10:09:12,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:12,633 INFO L225 Difference]: With dead ends: 4239 [2020-09-25 10:09:12,633 INFO L226 Difference]: Without dead ends: 2516 [2020-09-25 10:09:12,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:09:12,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2516 states. [2020-09-25 10:09:12,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2516 to 1137. [2020-09-25 10:09:12,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1137 states. [2020-09-25 10:09:12,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1318 transitions. [2020-09-25 10:09:12,702 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1318 transitions. Word has length 174 [2020-09-25 10:09:12,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:12,702 INFO L479 AbstractCegarLoop]: Abstraction has 1137 states and 1318 transitions. [2020-09-25 10:09:12,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:09:12,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1318 transitions. [2020-09-25 10:09:12,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 10:09:12,710 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:12,710 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:12,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:09:12,711 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:12,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:12,712 INFO L82 PathProgramCache]: Analyzing trace with hash -225607951, now seen corresponding path program 1 times [2020-09-25 10:09:12,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:12,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209864071] [2020-09-25 10:09:12,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:12,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:12,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:12,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:13,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:16,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:16,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:16,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:17,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:17,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 10:09:17,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:09:17,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 10:09:17,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:17,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:17,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:09:17,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:09:17,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-09-25 10:09:17,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:17,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:17,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:17,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:17,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:17,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:17,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 10:09:17,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:17,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:17,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:17,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:17,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:09:17,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:17,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:17,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:17,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:17,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:17,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:09:17,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:17,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 10:09:17,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:17,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:17,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:09:17,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:09:17,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:09:17,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:17,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:09:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:17,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:17,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:18,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:18,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 10:09:18,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:18,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 10:09:18,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:18,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:18,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:09:18,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:09:18,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 10:09:18,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:18,089 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-25 10:09:18,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209864071] [2020-09-25 10:09:18,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:18,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:09:18,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382211210] [2020-09-25 10:09:18,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:09:18,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:18,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:09:18,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:09:18,091 INFO L87 Difference]: Start difference. First operand 1137 states and 1318 transitions. Second operand 6 states. [2020-09-25 10:09:19,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:19,544 INFO L93 Difference]: Finished difference Result 3064 states and 3728 transitions. [2020-09-25 10:09:19,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:09:19,545 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 191 [2020-09-25 10:09:19,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:19,554 INFO L225 Difference]: With dead ends: 3064 [2020-09-25 10:09:19,554 INFO L226 Difference]: Without dead ends: 1949 [2020-09-25 10:09:19,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:09:19,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1949 states. [2020-09-25 10:09:19,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1949 to 1907. [2020-09-25 10:09:19,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1907 states. [2020-09-25 10:09:19,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 2231 transitions. [2020-09-25 10:09:19,609 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 2231 transitions. Word has length 191 [2020-09-25 10:09:19,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:19,609 INFO L479 AbstractCegarLoop]: Abstraction has 1907 states and 2231 transitions. [2020-09-25 10:09:19,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:09:19,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 2231 transitions. [2020-09-25 10:09:19,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-25 10:09:19,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:19,617 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:19,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:09:19,618 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:19,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:19,618 INFO L82 PathProgramCache]: Analyzing trace with hash -2046183917, now seen corresponding path program 1 times [2020-09-25 10:09:19,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:19,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610974041] [2020-09-25 10:09:19,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:19,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:19,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:19,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:20,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking...