/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:43:51,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:43:51,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:43:51,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:43:51,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:43:51,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:43:51,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:43:51,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:43:51,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:43:51,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:43:51,801 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:43:51,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:43:51,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:43:51,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:43:51,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:43:51,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:43:51,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:43:51,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:43:51,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:43:51,824 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:43:51,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:43:51,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:43:51,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:43:51,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:43:51,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:43:51,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:43:51,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:43:51,841 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:43:51,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:43:51,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:43:51,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:43:51,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:43:51,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:43:51,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:43:51,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:43:51,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:43:51,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:43:51,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:43:51,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:43:51,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:43:51,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:43:51,853 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 06:43:51,913 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:43:51,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:43:51,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:43:51,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:43:51,916 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:43:51,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:43:51,917 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:43:51,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:43:51,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:43:51,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:43:51,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:43:51,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:43:51,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:43:51,920 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:43:51,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:43:51,920 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:43:51,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:43:51,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:43:51,921 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:43:51,921 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:43:51,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:43:51,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:43:51,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:43:51,922 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:43:51,922 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:43:51,922 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:43:51,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:43:51,923 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:43:51,923 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:43:51,923 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:43:52,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:43:52,422 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:43:52,427 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:43:52,430 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:43:52,430 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:43:52,432 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label07.c [2020-09-25 06:43:52,527 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/689811053/75492e95fc284c5f9e1244d6282f3bc6/FLAG9ad7e6ab2 [2020-09-25 06:43:53,224 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:43:53,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label07.c [2020-09-25 06:43:53,248 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/689811053/75492e95fc284c5f9e1244d6282f3bc6/FLAG9ad7e6ab2 [2020-09-25 06:43:53,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/689811053/75492e95fc284c5f9e1244d6282f3bc6 [2020-09-25 06:43:53,440 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:43:53,447 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:43:53,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:43:53,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:43:53,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:43:53,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:43:53" (1/1) ... [2020-09-25 06:43:53,458 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 06:43:53, skipping insertion in model container [2020-09-25 06:43:53,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:43:53" (1/1) ... [2020-09-25 06:43:53,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:43:53,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:43:53,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:43:53,967 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:43:54,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:43:54,245 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:43:54,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:54 WrapperNode [2020-09-25 06:43:54,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:43:54,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:43:54,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:43:54,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:43:54,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:54" (1/1) ... [2020-09-25 06:43:54,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:54" (1/1) ... [2020-09-25 06:43:54,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:54" (1/1) ... [2020-09-25 06:43:54,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:54" (1/1) ... [2020-09-25 06:43:54,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:54" (1/1) ... [2020-09-25 06:43:54,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:54" (1/1) ... [2020-09-25 06:43:54,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:54" (1/1) ... [2020-09-25 06:43:54,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:43:54,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:43:54,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:43:54,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:43:54,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:43:54,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:43:54,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:43:54,462 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:43:54,462 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:43:54,462 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:43:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:43:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:43:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:43:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:43:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:43:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:43:55,885 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:43:55,885 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:43:55,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:43:55 BoogieIcfgContainer [2020-09-25 06:43:55,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:43:55,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:43:55,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:43:55,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:43:55,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:43:53" (1/3) ... [2020-09-25 06:43:55,905 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 06:43:55, skipping insertion in model container [2020-09-25 06:43:55,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:54" (2/3) ... [2020-09-25 06:43:55,905 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 06:43:55, skipping insertion in model container [2020-09-25 06:43:55,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:43:55" (3/3) ... [2020-09-25 06:43:55,908 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label07.c [2020-09-25 06:43:55,922 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:43:55,934 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:43:55,955 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:43:55,990 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:43:55,990 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:43:55,990 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:43:55,991 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:43:55,991 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:43:55,991 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:43:55,991 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:43:55,991 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:43:56,026 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 06:43:56,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 06:43:56,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:56,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:43:56,057 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:56,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:56,064 INFO L82 PathProgramCache]: Analyzing trace with hash 228287402, now seen corresponding path program 1 times [2020-09-25 06:43:56,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:56,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106040551] [2020-09-25 06:43:56,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:56,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:56,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:57,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:58,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:58,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:00,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:01,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:01,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:01,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 06:44:01,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:44:01,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-09-25 06:44:01,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:01,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:01,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:44:01,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:44:01,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 06:44:01,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 06:44:01,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:01,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:01,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:01,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:01,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:01,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:44:01,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:01,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:01,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:01,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:01,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:44:01,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:01,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:44:01,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106040551] [2020-09-25 06:44:01,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:44:01,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:44:01,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528150623] [2020-09-25 06:44:01,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:44:01,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:01,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:44:01,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:01,928 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 06:44:05,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:05,155 INFO L93 Difference]: Finished difference Result 1420 states and 2015 transitions. [2020-09-25 06:44:05,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:44:05,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-09-25 06:44:05,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:05,196 INFO L225 Difference]: With dead ends: 1420 [2020-09-25 06:44:05,196 INFO L226 Difference]: Without dead ends: 837 [2020-09-25 06:44:05,209 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 06:44:05,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2020-09-25 06:44:05,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 774. [2020-09-25 06:44:05,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 774 states. [2020-09-25 06:44:05,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 946 transitions. [2020-09-25 06:44:05,389 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 946 transitions. Word has length 165 [2020-09-25 06:44:05,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:05,392 INFO L479 AbstractCegarLoop]: Abstraction has 774 states and 946 transitions. [2020-09-25 06:44:05,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:44:05,393 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 946 transitions. [2020-09-25 06:44:05,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 06:44:05,408 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:05,409 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:44:05,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:44:05,410 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:05,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:05,410 INFO L82 PathProgramCache]: Analyzing trace with hash 938728200, now seen corresponding path program 1 times [2020-09-25 06:44:05,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:05,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211219700] [2020-09-25 06:44:05,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:05,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:05,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:05,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:06,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:07,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:09,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:09,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:10,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:10,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 06:44:10,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:44:10,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 06:44:10,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:10,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:10,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:44:10,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 06:44:10,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:10,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:10,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:10,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:10,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:10,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:10,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 06:44:10,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:10,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:10,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:10,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:10,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:10,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 06:44:10,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:10,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:10,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:10,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:44:10,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:10,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:44:10,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:10,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:10,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:10,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:10,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:44:10,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:10,825 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:44:10,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211219700] [2020-09-25 06:44:10,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:10,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:44:10,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262188946] [2020-09-25 06:44:10,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:44:10,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:10,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:44:10,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:10,830 INFO L87 Difference]: Start difference. First operand 774 states and 946 transitions. Second operand 5 states. [2020-09-25 06:44:12,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:12,727 INFO L93 Difference]: Finished difference Result 1990 states and 2530 transitions. [2020-09-25 06:44:12,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:44:12,728 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-09-25 06:44:12,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:12,736 INFO L225 Difference]: With dead ends: 1990 [2020-09-25 06:44:12,736 INFO L226 Difference]: Without dead ends: 1238 [2020-09-25 06:44:12,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:44:12,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2020-09-25 06:44:12,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1228. [2020-09-25 06:44:12,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1228 states. [2020-09-25 06:44:12,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1542 transitions. [2020-09-25 06:44:12,813 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1542 transitions. Word has length 187 [2020-09-25 06:44:12,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:12,815 INFO L479 AbstractCegarLoop]: Abstraction has 1228 states and 1542 transitions. [2020-09-25 06:44:12,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:44:12,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1542 transitions. [2020-09-25 06:44:12,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-25 06:44:12,830 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:12,830 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:44:12,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:44:12,831 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:12,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:12,831 INFO L82 PathProgramCache]: Analyzing trace with hash 817937001, now seen corresponding path program 1 times [2020-09-25 06:44:12,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:12,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248349559] [2020-09-25 06:44:12,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:12,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:12,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:13,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:13,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:14,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:17,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:17,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-25 06:44:17,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:44:17,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 06:44:17,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:17,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:17,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:44:17,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:44:17,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 06:44:17,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:44:17,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:17,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:18,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:18,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:18,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:18,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:44:18,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:18,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:18,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:18,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:18,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:44:18,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:18,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:18,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:18,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:18,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:44:18,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:18,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 06:44:18,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:18,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:18,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:18,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:44:18,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 06:44:18,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:18,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 06:44:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:18,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:18,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:18,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 06:44:18,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:18,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:44:18,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:18,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:18,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:18,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:44:18,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:18,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:18,296 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 43 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:44:18,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248349559] [2020-09-25 06:44:18,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:18,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:44:18,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402084937] [2020-09-25 06:44:18,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:44:18,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:18,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:44:18,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:44:18,307 INFO L87 Difference]: Start difference. First operand 1228 states and 1542 transitions. Second operand 7 states. [2020-09-25 06:44:20,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:20,545 INFO L93 Difference]: Finished difference Result 3067 states and 3976 transitions. [2020-09-25 06:44:20,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:44:20,546 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2020-09-25 06:44:20,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:20,560 INFO L225 Difference]: With dead ends: 3067 [2020-09-25 06:44:20,560 INFO L226 Difference]: Without dead ends: 1861 [2020-09-25 06:44:20,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:44:20,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2020-09-25 06:44:20,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1851. [2020-09-25 06:44:20,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1851 states. [2020-09-25 06:44:20,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1851 states to 1851 states and 2293 transitions. [2020-09-25 06:44:20,658 INFO L78 Accepts]: Start accepts. Automaton has 1851 states and 2293 transitions. Word has length 229 [2020-09-25 06:44:20,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:20,659 INFO L479 AbstractCegarLoop]: Abstraction has 1851 states and 2293 transitions. [2020-09-25 06:44:20,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:44:20,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1851 states and 2293 transitions. [2020-09-25 06:44:20,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-09-25 06:44:20,670 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:20,671 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:44:20,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:44:20,671 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:20,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:20,672 INFO L82 PathProgramCache]: Analyzing trace with hash 981934836, now seen corresponding path program 1 times [2020-09-25 06:44:20,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:20,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004391421] [2020-09-25 06:44:20,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:20,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:20,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:21,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:21,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:23,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:23,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:24,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:24,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:24,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:25,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:25,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:25,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-09-25 06:44:25,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:44:25,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 06:44:25,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:25,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:25,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:44:25,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-09-25 06:44:25,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-09-25 06:44:25,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:25,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:25,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:25,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:25,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:25,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:25,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:44:25,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:25,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:25,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:25,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:25,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:25,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:25,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:25,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:25,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:25,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:44:25,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:25,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:44:25,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:25,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:25,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:25,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:25,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:25,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:25,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 06:44:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:25,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:25,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:25,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 06:44:25,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:25,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 06:44:25,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:25,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:25,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:25,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:25,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:44:25,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:25,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 06:44:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:25,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:26,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:26,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:26,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 06:44:26,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:44:26,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 06:44:26,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:26,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:26,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:26,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:44:26,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 06:44:26,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:26,154 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 73 proven. 13 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 06:44:26,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004391421] [2020-09-25 06:44:26,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:26,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:44:26,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792743827] [2020-09-25 06:44:26,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:44:26,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:26,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:44:26,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:44:26,161 INFO L87 Difference]: Start difference. First operand 1851 states and 2293 transitions. Second operand 7 states. [2020-09-25 06:44:28,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:28,085 INFO L93 Difference]: Finished difference Result 3750 states and 4687 transitions. [2020-09-25 06:44:28,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:44:28,086 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 247 [2020-09-25 06:44:28,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:28,102 INFO L225 Difference]: With dead ends: 3750 [2020-09-25 06:44:28,102 INFO L226 Difference]: Without dead ends: 1921 [2020-09-25 06:44:28,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:44:28,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2020-09-25 06:44:28,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1545. [2020-09-25 06:44:28,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1545 states. [2020-09-25 06:44:28,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 1782 transitions. [2020-09-25 06:44:28,184 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 1782 transitions. Word has length 247 [2020-09-25 06:44:28,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:28,184 INFO L479 AbstractCegarLoop]: Abstraction has 1545 states and 1782 transitions. [2020-09-25 06:44:28,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:44:28,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 1782 transitions. [2020-09-25 06:44:28,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-09-25 06:44:28,193 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:28,193 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:44:28,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:44:28,194 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:28,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:28,194 INFO L82 PathProgramCache]: Analyzing trace with hash -943856275, now seen corresponding path program 1 times [2020-09-25 06:44:28,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:28,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649789260] [2020-09-25 06:44:28,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:28,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:28,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:28,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:28,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:31,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:31,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:33,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:33,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-09-25 06:44:33,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:44:33,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:44:33,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:33,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:33,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:33,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 06:44:33,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 06:44:33,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:33,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:33,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:33,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:33,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:33,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:33,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:44:33,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:33,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:33,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:33,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:33,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:33,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:33,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:33,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:33,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:33,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:44:33,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:33,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:44:33,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:33,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:33,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:33,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:33,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 06:44:33,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:33,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 06:44:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:33,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:33,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:33,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 06:44:33,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:33,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 06:44:33,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:33,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:33,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:33,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:44:33,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 06:44:33,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:33,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-25 06:44:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:33,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:33,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:33,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 06:44:33,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:33,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:44:33,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:33,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:33,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:33,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:44:33,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:33,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:33,669 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 92 proven. 14 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 06:44:33,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649789260] [2020-09-25 06:44:33,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:33,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:44:33,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971507234] [2020-09-25 06:44:33,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:44:33,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:33,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:44:33,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:44:33,671 INFO L87 Difference]: Start difference. First operand 1545 states and 1782 transitions. Second operand 7 states. [2020-09-25 06:44:36,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:36,445 INFO L93 Difference]: Finished difference Result 4128 states and 4873 transitions. [2020-09-25 06:44:36,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:44:36,446 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 259 [2020-09-25 06:44:36,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:36,459 INFO L225 Difference]: With dead ends: 4128 [2020-09-25 06:44:36,459 INFO L226 Difference]: Without dead ends: 2430 [2020-09-25 06:44:36,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:44:36,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2020-09-25 06:44:36,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 2169. [2020-09-25 06:44:36,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2169 states. [2020-09-25 06:44:36,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 2536 transitions. [2020-09-25 06:44:36,532 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 2536 transitions. Word has length 259 [2020-09-25 06:44:36,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:36,533 INFO L479 AbstractCegarLoop]: Abstraction has 2169 states and 2536 transitions. [2020-09-25 06:44:36,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:44:36,533 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 2536 transitions. [2020-09-25 06:44:36,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-09-25 06:44:36,543 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:36,543 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:44:36,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:44:36,544 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:36,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:36,544 INFO L82 PathProgramCache]: Analyzing trace with hash 238182508, now seen corresponding path program 1 times [2020-09-25 06:44:36,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:36,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279151669] [2020-09-25 06:44:36,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:36,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:36,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:36,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:37,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:37,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:37,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:37,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking...