/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=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:20:59,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:20:59,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:20:59,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:20:59,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:20:59,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:20:59,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:20:59,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:20:59,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:20:59,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:20:59,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:20:59,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:20:59,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:20:59,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:20:59,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:20:59,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:20:59,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:20:59,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:20:59,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:20:59,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:20:59,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:20:59,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:20:59,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:20:59,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:20:59,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:20:59,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:20:59,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:20:59,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:20:59,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:20:59,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:20:59,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:20:59,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:20:59,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:20:59,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:20:59,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:20:59,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:20:59,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:20:59,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:20:59,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:20:59,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:20:59,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:20:59,767 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 12:20:59,794 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:20:59,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:20:59,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:20:59,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:20:59,796 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:20:59,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:20:59,796 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:20:59,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:20:59,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:20:59,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:20:59,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:20:59,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:20:59,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:20:59,798 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:20:59,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:20:59,798 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:20:59,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:20:59,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:20:59,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:20:59,799 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:20:59,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:20:59,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:20:59,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:20:59,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:20:59,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:20:59,800 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:20:59,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:20:59,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:20:59,801 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:20:59,801 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:21:00,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:21:00,304 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:21:00,311 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:21:00,313 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:21:00,314 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:21:00,316 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label06.c [2020-09-25 12:21:00,414 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c517ae00/b7d2087f57f44b13878f7a7a98e6647a/FLAG16231d74f [2020-09-25 12:21:01,090 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:21:01,091 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label06.c [2020-09-25 12:21:01,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c517ae00/b7d2087f57f44b13878f7a7a98e6647a/FLAG16231d74f [2020-09-25 12:21:01,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c517ae00/b7d2087f57f44b13878f7a7a98e6647a [2020-09-25 12:21:01,346 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:21:01,352 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:21:01,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:21:01,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:21:01,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:21:01,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:21:01" (1/1) ... [2020-09-25 12:21:01,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d1dceb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:01, skipping insertion in model container [2020-09-25 12:21:01,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:21:01" (1/1) ... [2020-09-25 12:21:01,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:21:01,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:21:01,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:21:01,892 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:21:02,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:21:02,152 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:21:02,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:02 WrapperNode [2020-09-25 12:21:02,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:21:02,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:21:02,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:21:02,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:21:02,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:02" (1/1) ... [2020-09-25 12:21:02,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:02" (1/1) ... [2020-09-25 12:21:02,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:02" (1/1) ... [2020-09-25 12:21:02,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:02" (1/1) ... [2020-09-25 12:21:02,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:02" (1/1) ... [2020-09-25 12:21:02,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:02" (1/1) ... [2020-09-25 12:21:02,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:02" (1/1) ... [2020-09-25 12:21:02,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:21:02,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:21:02,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:21:02,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:21:02,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:02" (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 12:21:02,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:21:02,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:21:02,392 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:21:02,392 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:21:02,392 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:21:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:21:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:21:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:21:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:21:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:21:02,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:21:03,789 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:21:03,790 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:21:03,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:21:03 BoogieIcfgContainer [2020-09-25 12:21:03,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:21:03,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:21:03,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:21:03,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:21:03,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:21:01" (1/3) ... [2020-09-25 12:21:03,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f84b47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:21:03, skipping insertion in model container [2020-09-25 12:21:03,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:02" (2/3) ... [2020-09-25 12:21:03,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f84b47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:21:03, skipping insertion in model container [2020-09-25 12:21:03,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:21:03" (3/3) ... [2020-09-25 12:21:03,821 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label06.c [2020-09-25 12:21:03,833 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:21:03,850 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:21:03,872 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:21:03,904 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:21:03,904 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:21:03,904 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:21:03,904 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:21:03,904 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:21:03,905 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:21:03,905 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:21:03,905 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:21:03,940 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 12:21:03,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 12:21:03,962 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:03,963 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] [2020-09-25 12:21:03,964 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:03,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:03,970 INFO L82 PathProgramCache]: Analyzing trace with hash 730138415, now seen corresponding path program 1 times [2020-09-25 12:21:03,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:03,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667994515] [2020-09-25 12:21:03,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:04,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:04,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:05,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:05,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:07,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:08,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:08,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:09,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:09,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 12:21:09,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:21:09,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 12:21:09,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:09,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:09,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:21:09,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:21:09,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 12:21:09,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 12:21:09,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:09,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:09,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:09,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:09,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:09,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 12:21:09,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:09,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:09,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:09,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:09,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:21:09,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:21:09,758 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 12:21:09,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667994515] [2020-09-25 12:21:09,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:21:09,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:21:09,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206206099] [2020-09-25 12:21:09,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:21:09,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:09,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:21:09,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:21:09,799 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 12:21:12,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:12,060 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 12:21:12,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:21:12,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-09-25 12:21:12,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:12,093 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 12:21:12,093 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 12:21:12,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:21:12,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 12:21:12,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 12:21:12,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 12:21:12,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 12:21:12,227 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 152 [2020-09-25 12:21:12,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:12,228 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 12:21:12,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:21:12,228 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 12:21:12,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 12:21:12,239 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:12,240 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:21:12,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:21:12,241 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:12,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:12,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1669034880, now seen corresponding path program 1 times [2020-09-25 12:21:12,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:12,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788371176] [2020-09-25 12:21:12,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:12,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:12,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:12,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:13,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:13,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:13,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:15,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:17,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:17,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 12:21:17,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:21:17,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 12:21:17,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:17,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:17,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:21:17,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 12:21:17,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 12:21:17,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:17,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:17,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:17,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:17,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:17,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:17,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:21:17,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:17,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:17,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:17,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:17,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:17,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:17,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:17,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:21:17,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:17,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 12:21:17,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:17,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:17,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:21:17,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:17,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:21:17,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:17,955 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:17,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788371176] [2020-09-25 12:21:17,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:17,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:21:17,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478766158] [2020-09-25 12:21:17,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:21:17,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:17,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:21:17,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:21:17,960 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 9 states. [2020-09-25 12:21:23,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:23,050 INFO L93 Difference]: Finished difference Result 2178 states and 2848 transitions. [2020-09-25 12:21:23,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:21:23,051 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 173 [2020-09-25 12:21:23,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:23,060 INFO L225 Difference]: With dead ends: 2178 [2020-09-25 12:21:23,060 INFO L226 Difference]: Without dead ends: 1100 [2020-09-25 12:21:23,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:21:23,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2020-09-25 12:21:23,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 1064. [2020-09-25 12:21:23,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2020-09-25 12:21:23,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1200 transitions. [2020-09-25 12:21:23,118 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1200 transitions. Word has length 173 [2020-09-25 12:21:23,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:23,119 INFO L479 AbstractCegarLoop]: Abstraction has 1064 states and 1200 transitions. [2020-09-25 12:21:23,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:21:23,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1200 transitions. [2020-09-25 12:21:23,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 12:21:23,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:23,124 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:21:23,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:21:23,125 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:23,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:23,125 INFO L82 PathProgramCache]: Analyzing trace with hash -139356601, now seen corresponding path program 1 times [2020-09-25 12:21:23,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:23,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259534636] [2020-09-25 12:21:23,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:23,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:23,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:23,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:23,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:24,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:24,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:28,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:28,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:28,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 12:21:28,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:21:28,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-09-25 12:21:28,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:28,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:28,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:28,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 12:21:28,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 12:21:28,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:21:28,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:28,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:28,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:28,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:28,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:28,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:21:28,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:28,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:28,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:28,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:28,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:28,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:28,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:28,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:28,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:28,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 12:21:28,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:28,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 12:21:28,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:28,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:28,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:28,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:28,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 12:21:28,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:28,476 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:28,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259534636] [2020-09-25 12:21:28,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:28,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:21:28,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752434272] [2020-09-25 12:21:28,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:21:28,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:28,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:21:28,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:21:28,480 INFO L87 Difference]: Start difference. First operand 1064 states and 1200 transitions. Second operand 5 states. [2020-09-25 12:21:30,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:30,253 INFO L93 Difference]: Finished difference Result 2456 states and 2855 transitions. [2020-09-25 12:21:30,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:21:30,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-09-25 12:21:30,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:30,261 INFO L225 Difference]: With dead ends: 2456 [2020-09-25 12:21:30,262 INFO L226 Difference]: Without dead ends: 1416 [2020-09-25 12:21:30,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 12:21:30,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2020-09-25 12:21:30,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1352. [2020-09-25 12:21:30,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2020-09-25 12:21:30,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1563 transitions. [2020-09-25 12:21:30,310 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1563 transitions. Word has length 178 [2020-09-25 12:21:30,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:30,311 INFO L479 AbstractCegarLoop]: Abstraction has 1352 states and 1563 transitions. [2020-09-25 12:21:30,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:21:30,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1563 transitions. [2020-09-25 12:21:30,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 12:21:30,317 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:30,318 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:21:30,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:21:30,318 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:30,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:30,319 INFO L82 PathProgramCache]: Analyzing trace with hash -114572164, now seen corresponding path program 1 times [2020-09-25 12:21:30,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:30,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134763202] [2020-09-25 12:21:30,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:30,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:30,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:30,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:30,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:32,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:32,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:32,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:32,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:32,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:33,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:35,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:35,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-25 12:21:35,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:21:35,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:21:35,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:35,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:35,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 12:21:35,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-25 12:21:35,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 12:21:35,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:35,874 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2020-09-25 12:21:36,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:36,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:36,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:36,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:36,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:36,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:21:36,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:36,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:36,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:36,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:36,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:36,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:21:36,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:36,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:36,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:36,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 12:21:36,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:36,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:21:36,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:36,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:36,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:36,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:36,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:36,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:21:36,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 12:21:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:36,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:36,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:36,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:21:36,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:36,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 12:21:36,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:36,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:36,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:36,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:36,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 12:21:36,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:21:37,037 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 12:21:37,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134763202] [2020-09-25 12:21:37,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:37,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 12:21:37,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801338761] [2020-09-25 12:21:37,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 12:21:37,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:37,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 12:21:37,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:21:37,046 INFO L87 Difference]: Start difference. First operand 1352 states and 1563 transitions. Second operand 15 states. [2020-09-25 12:21:38,149 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-09-25 12:21:39,280 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 90 [2020-09-25 12:21:39,741 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2020-09-25 12:21:40,208 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2020-09-25 12:21:40,464 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2020-09-25 12:21:42,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:42,324 INFO L93 Difference]: Finished difference Result 2723 states and 3197 transitions. [2020-09-25 12:21:42,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 12:21:42,325 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 197 [2020-09-25 12:21:42,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:42,336 INFO L225 Difference]: With dead ends: 2723 [2020-09-25 12:21:42,337 INFO L226 Difference]: Without dead ends: 1395 [2020-09-25 12:21:42,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=246, Invalid=510, Unknown=0, NotChecked=0, Total=756 [2020-09-25 12:21:42,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2020-09-25 12:21:42,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1349. [2020-09-25 12:21:42,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1349 states. [2020-09-25 12:21:42,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1547 transitions. [2020-09-25 12:21:42,405 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1547 transitions. Word has length 197 [2020-09-25 12:21:42,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:42,408 INFO L479 AbstractCegarLoop]: Abstraction has 1349 states and 1547 transitions. [2020-09-25 12:21:42,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 12:21:42,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1547 transitions. [2020-09-25 12:21:42,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-25 12:21:42,414 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:42,415 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:21:42,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:21:42,415 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:42,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:42,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1327822116, now seen corresponding path program 1 times [2020-09-25 12:21:42,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:42,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491596804] [2020-09-25 12:21:42,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:42,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:42,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:42,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:42,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:43,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:43,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:43,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:43,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:45,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:47,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:47,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-09-25 12:21:47,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:21:47,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:21:47,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:47,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:47,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:47,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-09-25 12:21:47,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 12:21:47,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:47,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:47,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:47,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:47,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:47,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:47,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:21:47,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:47,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:47,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:47,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:47,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:47,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:47,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:47,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:47,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:47,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 12:21:47,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:47,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:21:47,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:47,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:47,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:47,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:47,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:47,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:47,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 12:21:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:47,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:47,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:47,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:47,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:47,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 12:21:47,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:47,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:47,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:47,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:47,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:21:47,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:47,775 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 12:21:47,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491596804] [2020-09-25 12:21:47,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:47,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:21:47,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168359335] [2020-09-25 12:21:47,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:21:47,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:47,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:21:47,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:21:47,779 INFO L87 Difference]: Start difference. First operand 1349 states and 1547 transitions. Second operand 5 states.