/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:34:21,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:34:21,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:34:22,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:34:22,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:34:22,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:34:22,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:34:22,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:34:22,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:34:22,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:34:22,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:34:22,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:34:22,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:34:22,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:34:22,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:34:22,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:34:22,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:34:22,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:34:22,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:34:22,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:34:22,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:34:22,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:34:22,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:34:22,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:34:22,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:34:22,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:34:22,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:34:22,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:34:22,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:34:22,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:34:22,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:34:22,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:34:22,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:34:22,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:34:22,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:34:22,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:34:22,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:34:22,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:34:22,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:34:22,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:34:22,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:34:22,108 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 13:34:22,156 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:34:22,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:34:22,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:34:22,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:34:22,160 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:34:22,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:34:22,161 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:34:22,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:34:22,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:34:22,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:34:22,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:34:22,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:34:22,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:34:22,164 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:34:22,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:34:22,164 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:34:22,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:34:22,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:34:22,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:34:22,165 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:34:22,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:34:22,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:34:22,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:34:22,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:34:22,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:34:22,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:34:22,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:34:22,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:34:22,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:34:22,167 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:34:22,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:34:22,626 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:34:22,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:34:22,633 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:34:22,633 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:34:22,634 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label31.c [2020-09-25 13:34:22,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1005cc519/3819b3c6d0774ef2b9e96f85906c9eb3/FLAG6b2e95687 [2020-09-25 13:34:23,379 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:34:23,380 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label31.c [2020-09-25 13:34:23,394 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1005cc519/3819b3c6d0774ef2b9e96f85906c9eb3/FLAG6b2e95687 [2020-09-25 13:34:23,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1005cc519/3819b3c6d0774ef2b9e96f85906c9eb3 [2020-09-25 13:34:23,651 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:34:23,658 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:34:23,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:34:23,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:34:23,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:34:23,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:34:23" (1/1) ... [2020-09-25 13:34:23,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6643fb7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:23, skipping insertion in model container [2020-09-25 13:34:23,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:34:23" (1/1) ... [2020-09-25 13:34:23,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:34:23,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:34:24,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:34:24,322 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:34:24,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:34:24,594 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:34:24,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:24 WrapperNode [2020-09-25 13:34:24,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:34:24,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:34:24,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:34:24,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:34:24,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:24" (1/1) ... [2020-09-25 13:34:24,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:24" (1/1) ... [2020-09-25 13:34:24,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:24" (1/1) ... [2020-09-25 13:34:24,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:24" (1/1) ... [2020-09-25 13:34:24,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:24" (1/1) ... [2020-09-25 13:34:24,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:24" (1/1) ... [2020-09-25 13:34:24,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:24" (1/1) ... [2020-09-25 13:34:24,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:34:24,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:34:24,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:34:24,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:34:24,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:24" (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 13:34:24,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:34:24,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:34:24,886 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:34:24,886 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:34:24,886 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:34:24,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:34:24,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:34:24,887 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:34:24,887 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:34:24,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:34:24,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:34:26,699 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:34:26,699 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:34:26,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:34:26 BoogieIcfgContainer [2020-09-25 13:34:26,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:34:26,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:34:26,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:34:26,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:34:26,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:34:23" (1/3) ... [2020-09-25 13:34:26,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9167e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:34:26, skipping insertion in model container [2020-09-25 13:34:26,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:24" (2/3) ... [2020-09-25 13:34:26,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9167e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:34:26, skipping insertion in model container [2020-09-25 13:34:26,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:34:26" (3/3) ... [2020-09-25 13:34:26,719 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label31.c [2020-09-25 13:34:26,732 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:34:26,744 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:34:26,769 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:34:26,810 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:34:26,810 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:34:26,810 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:34:26,810 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:34:26,811 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:34:26,811 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:34:26,811 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:34:26,811 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:34:26,848 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 13:34:26,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 13:34:26,860 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:26,862 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] [2020-09-25 13:34:26,863 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:26,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:26,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1703669257, now seen corresponding path program 1 times [2020-09-25 13:34:26,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:26,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317279773] [2020-09-25 13:34:26,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:27,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:27,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:27,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:28,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:28,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 13:34:28,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:34:28,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1306 [2020-09-25 13:34:28,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:28,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:34:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:34:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 13:34:28,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:34:28,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:28,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:28,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:28,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:28,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:28,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 13:34:28,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:28,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:28,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:28,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:28,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:34:28,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:28,683 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 13:34:28,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317279773] [2020-09-25 13:34:28,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:34:28,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:34:28,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603439560] [2020-09-25 13:34:28,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:34:28,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:28,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:34:28,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:34:28,718 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 13:34:30,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:30,826 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 13:34:30,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:34:30,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-09-25 13:34:30,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:30,871 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 13:34:30,871 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 13:34:30,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:34:30,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 13:34:30,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 13:34:30,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 13:34:30,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 13:34:30,979 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 62 [2020-09-25 13:34:30,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:30,980 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 13:34:30,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:34:30,980 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 13:34:30,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 13:34:30,988 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:30,989 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:30,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:34:30,989 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:30,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:30,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1996719641, now seen corresponding path program 1 times [2020-09-25 13:34:30,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:30,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548737078] [2020-09-25 13:34:30,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:31,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:31,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:31,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:31,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:31,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:34,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:34,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 13:34:34,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:34:34,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3806 [2020-09-25 13:34:34,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:34,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:34,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:34:34,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:34:34,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 13:34:34,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:34,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:34,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:34,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:34,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:34,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:34,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:34:34,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:34,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:34,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:34,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:34,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:34:34,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:35,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:35,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:35,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:35,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:35,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:34:35,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:35,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-25 13:34:35,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:35,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:35,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:35,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:35,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 13:34:35,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:35,239 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 13:34:35,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548737078] [2020-09-25 13:34:35,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:35,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:34:35,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516044000] [2020-09-25 13:34:35,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:34:35,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:35,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:34:35,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:34:35,244 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 13:34:37,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:37,048 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 13:34:37,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:34:37,048 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 13:34:37,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:37,053 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 13:34:37,053 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 13:34:37,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:34:37,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 13:34:37,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 13:34:37,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 13:34:37,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 13:34:37,091 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 141 [2020-09-25 13:34:37,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:37,092 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 13:34:37,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:34:37,093 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 13:34:37,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 13:34:37,100 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:37,101 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:37,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:34:37,101 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:37,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:37,102 INFO L82 PathProgramCache]: Analyzing trace with hash -617946683, now seen corresponding path program 1 times [2020-09-25 13:34:37,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:37,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918304005] [2020-09-25 13:34:37,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:37,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:37,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:37,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:37,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:38,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:38,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:38,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:39,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:42,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:42,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 13:34:42,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:34:42,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 13:34:42,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:42,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:42,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:34:42,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:34:42,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 13:34:42,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:42,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:42,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:42,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:42,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:42,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:42,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:34:42,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:42,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:42,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:42,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:42,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:34:42,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:42,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:42,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:42,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:42,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:34:42,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:42,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 13:34:42,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:42,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:42,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:34:42,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:42,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:34:42,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:42,536 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 7 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:34:42,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918304005] [2020-09-25 13:34:42,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:42,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:34:42,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989173] [2020-09-25 13:34:42,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:34:42,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:42,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:34:42,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:34:42,539 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 8 states. [2020-09-25 13:34:46,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:46,124 INFO L93 Difference]: Finished difference Result 2012 states and 2641 transitions. [2020-09-25 13:34:46,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:34:46,130 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 151 [2020-09-25 13:34:46,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:46,141 INFO L225 Difference]: With dead ends: 2012 [2020-09-25 13:34:46,141 INFO L226 Difference]: Without dead ends: 1482 [2020-09-25 13:34:46,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:34:46,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2020-09-25 13:34:46,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1365. [2020-09-25 13:34:46,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1365 states. [2020-09-25 13:34:46,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1743 transitions. [2020-09-25 13:34:46,205 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1743 transitions. Word has length 151 [2020-09-25 13:34:46,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:46,206 INFO L479 AbstractCegarLoop]: Abstraction has 1365 states and 1743 transitions. [2020-09-25 13:34:46,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:34:46,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1743 transitions. [2020-09-25 13:34:46,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 13:34:46,212 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:46,212 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:46,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:34:46,212 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:46,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:46,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1755229107, now seen corresponding path program 1 times [2020-09-25 13:34:46,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:46,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249100068] [2020-09-25 13:34:46,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:46,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:46,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:46,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:48,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:48,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 13:34:48,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:34:48,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2097 [2020-09-25 13:34:48,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:48,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:48,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:48,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-09-25 13:34:48,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 13:34:48,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:48,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:48,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:48,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:48,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:48,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:48,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:34:48,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:48,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:48,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:34:48,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:48,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:34:48,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:48,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:48,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:48,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:48,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 13:34:48,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:48,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 13:34:48,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:48,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:48,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:48,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:48,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 13:34:48,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:48,652 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:34:48,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249100068] [2020-09-25 13:34:48,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:48,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:34:48,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668010386] [2020-09-25 13:34:48,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:34:48,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:48,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:34:48,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:34:48,655 INFO L87 Difference]: Start difference. First operand 1365 states and 1743 transitions. Second operand 5 states. [2020-09-25 13:34:50,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:50,518 INFO L93 Difference]: Finished difference Result 3353 states and 4453 transitions. [2020-09-25 13:34:50,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:34:50,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-09-25 13:34:50,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:50,531 INFO L225 Difference]: With dead ends: 3353 [2020-09-25 13:34:50,531 INFO L226 Difference]: Without dead ends: 2153 [2020-09-25 13:34:50,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:34:50,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2020-09-25 13:34:50,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2129. [2020-09-25 13:34:50,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2129 states. [2020-09-25 13:34:50,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 2598 transitions. [2020-09-25 13:34:50,617 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 2598 transitions. Word has length 153 [2020-09-25 13:34:50,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:50,618 INFO L479 AbstractCegarLoop]: Abstraction has 2129 states and 2598 transitions. [2020-09-25 13:34:50,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:34:50,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 2598 transitions. [2020-09-25 13:34:50,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 13:34:50,626 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:50,626 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 13:34:50,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:34:50,627 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:50,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:50,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1872349141, now seen corresponding path program 1 times [2020-09-25 13:34:50,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:50,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048542593] [2020-09-25 13:34:50,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:50,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:50,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:51,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:52,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:52,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:52,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:54,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:55,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:55,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-25 13:34:55,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:34:55,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 13:34:55,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:55,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:55,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:34:55,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:34:55,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 13:34:55,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:34:55,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:55,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:55,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:55,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:55,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:55,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:34:55,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:55,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:55,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:55,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:55,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:34:55,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:34:55,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:55,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:55,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:56,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:34:56,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:56,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-25 13:34:56,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:56,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:56,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:34:56,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:56,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:34:56,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:56,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:34:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:56,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:56,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:56,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:34:56,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:56,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 13:34:56,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:56,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:56,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:56,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:56,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:34:56,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:56,542 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 158 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:34:56,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048542593] [2020-09-25 13:34:56,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:56,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:34:56,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059717272] [2020-09-25 13:34:56,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:34:56,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:56,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:34:56,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:34:56,547 INFO L87 Difference]: Start difference. First operand 2129 states and 2598 transitions. Second operand 10 states. [2020-09-25 13:34:59,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:59,822 INFO L93 Difference]: Finished difference Result 4668 states and 5851 transitions. [2020-09-25 13:34:59,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 13:34:59,824 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 230 [2020-09-25 13:34:59,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:59,841 INFO L225 Difference]: With dead ends: 4668 [2020-09-25 13:34:59,841 INFO L226 Difference]: Without dead ends: 2704 [2020-09-25 13:34:59,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-25 13:34:59,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2704 states. [2020-09-25 13:34:59,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2704 to 2673. [2020-09-25 13:34:59,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2673 states. [2020-09-25 13:34:59,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2673 states to 2673 states and 3282 transitions. [2020-09-25 13:34:59,937 INFO L78 Accepts]: Start accepts. Automaton has 2673 states and 3282 transitions. Word has length 230 [2020-09-25 13:34:59,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:59,937 INFO L479 AbstractCegarLoop]: Abstraction has 2673 states and 3282 transitions. [2020-09-25 13:34:59,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:34:59,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2673 states and 3282 transitions. [2020-09-25 13:34:59,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-09-25 13:34:59,942 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:59,943 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:34:59,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:34:59,943 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:59,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:59,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1975871710, now seen corresponding path program 1 times [2020-09-25 13:34:59,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:59,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591541690] [2020-09-25 13:34:59,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:00,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:00,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:00,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:00,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:00,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:02,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:03,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:05,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:05,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-09-25 13:35:05,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:35:05,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 13:35:05,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:05,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:05,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:35:05,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:35:05,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-09-25 13:35:05,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:05,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:05,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:05,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:05,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:05,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:05,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:35:05,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:05,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:05,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:35:05,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:05,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:35:05,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:05,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:05,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:05,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:05,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:05,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:05,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:35:05,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:05,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 13:35:05,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:05,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:05,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:05,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:05,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:35:05,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:05,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 13:35:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:05,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:05,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:05,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:05,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 13:35:05,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:05,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-09-25 13:35:05,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:05,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:05,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:35:05,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:05,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 13:35:05,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:05,900 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 93 proven. 4 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 13:35:05,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591541690] [2020-09-25 13:35:05,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:05,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:35:05,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350389374] [2020-09-25 13:35:05,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:35:05,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:05,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:35:05,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:35:05,903 INFO L87 Difference]: Start difference. First operand 2673 states and 3282 transitions. Second operand 10 states. [2020-09-25 13:35:08,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:08,857 INFO L93 Difference]: Finished difference Result 5997 states and 7666 transitions. [2020-09-25 13:35:08,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:35:08,859 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 234 [2020-09-25 13:35:08,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:08,879 INFO L225 Difference]: With dead ends: 5997 [2020-09-25 13:35:08,879 INFO L226 Difference]: Without dead ends: 3475 [2020-09-25 13:35:08,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:35:08,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3475 states. [2020-09-25 13:35:08,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3475 to 3284. [2020-09-25 13:35:08,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3284 states. [2020-09-25 13:35:08,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3284 states to 3284 states and 4025 transitions. [2020-09-25 13:35:08,978 INFO L78 Accepts]: Start accepts. Automaton has 3284 states and 4025 transitions. Word has length 234 [2020-09-25 13:35:08,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:08,979 INFO L479 AbstractCegarLoop]: Abstraction has 3284 states and 4025 transitions. [2020-09-25 13:35:08,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:35:08,979 INFO L276 IsEmpty]: Start isEmpty. Operand 3284 states and 4025 transitions. [2020-09-25 13:35:08,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-09-25 13:35:08,984 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:08,985 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 13:35:08,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:35:08,985 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:08,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:08,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1455418807, now seen corresponding path program 1 times [2020-09-25 13:35:08,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:08,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432130819] [2020-09-25 13:35:08,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:09,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:09,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:09,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:09,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:10,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:10,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking...