/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=0.2 --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_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:19:26,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:19:26,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:19:26,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:19:26,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:19:26,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:19:26,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:19:26,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:19:26,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:19:26,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:19:26,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:19:26,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:19:26,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:19:26,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:19:26,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:19:26,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:19:26,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:19:26,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:19:26,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:19:26,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:19:26,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:19:26,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:19:26,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:19:26,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:19:26,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:19:26,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:19:26,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:19:26,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:19:26,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:19:26,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:19:26,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:19:26,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:19:26,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:19:26,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:19:26,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:19:26,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:19:26,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:19:26,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:19:26,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:19:26,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:19:26,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:19:26,698 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 11:19:26,742 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:19:26,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:19:26,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:19:26,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:19:26,744 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:19:26,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:19:26,745 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:19:26,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:19:26,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:19:26,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:19:26,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:19:26,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:19:26,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:19:26,747 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:19:26,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:19:26,748 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:19:26,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:19:26,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:19:26,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:19:26,749 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:19:26,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:19:26,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:19:26,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:19:26,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:19:26,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:19:26,750 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:19:26,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:19:26,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:19:26,751 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:19:26,751 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:19:27,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:19:27,228 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:19:27,232 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:19:27,234 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:19:27,235 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:19:27,236 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label39.c [2020-09-25 11:19:27,320 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3d83ff76/693ff7c8f59145fc8c0dc31dbd9194bd/FLAGb4a3fff3e [2020-09-25 11:19:27,938 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:19:27,939 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label39.c [2020-09-25 11:19:27,962 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3d83ff76/693ff7c8f59145fc8c0dc31dbd9194bd/FLAGb4a3fff3e [2020-09-25 11:19:28,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3d83ff76/693ff7c8f59145fc8c0dc31dbd9194bd [2020-09-25 11:19:28,216 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:19:28,225 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:19:28,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:19:28,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:19:28,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:19:28,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:19:28" (1/1) ... [2020-09-25 11:19:28,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:28, skipping insertion in model container [2020-09-25 11:19:28,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:19:28" (1/1) ... [2020-09-25 11:19:28,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:19:28,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:19:28,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:19:28,794 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:19:29,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:19:29,058 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:19:29,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:29 WrapperNode [2020-09-25 11:19:29,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:19:29,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:19:29,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:19:29,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:19:29,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:29" (1/1) ... [2020-09-25 11:19:29,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:29" (1/1) ... [2020-09-25 11:19:29,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:29" (1/1) ... [2020-09-25 11:19:29,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:29" (1/1) ... [2020-09-25 11:19:29,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:29" (1/1) ... [2020-09-25 11:19:29,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:29" (1/1) ... [2020-09-25 11:19:29,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:29" (1/1) ... [2020-09-25 11:19:29,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:19:29,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:19:29,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:19:29,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:19:29,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:29" (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 11:19:29,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:19:29,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:19:29,274 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:19:29,274 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:19:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:19:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:19:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:19:29,278 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:19:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:19:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:19:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:19:30,697 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:19:30,697 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:19:30,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:19:30 BoogieIcfgContainer [2020-09-25 11:19:30,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:19:30,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:19:30,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:19:30,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:19:30,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:19:28" (1/3) ... [2020-09-25 11:19:30,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:19:30, skipping insertion in model container [2020-09-25 11:19:30,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:29" (2/3) ... [2020-09-25 11:19:30,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:19:30, skipping insertion in model container [2020-09-25 11:19:30,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:19:30" (3/3) ... [2020-09-25 11:19:30,717 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label39.c [2020-09-25 11:19:30,732 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:19:30,744 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:19:30,769 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:19:30,804 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:19:30,804 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:19:30,804 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:19:30,805 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:19:30,805 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:19:30,805 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:19:30,805 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:19:30,805 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:19:30,836 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:19:30,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 11:19:30,847 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:30,848 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] [2020-09-25 11:19:30,849 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:30,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:30,857 INFO L82 PathProgramCache]: Analyzing trace with hash 381272735, now seen corresponding path program 1 times [2020-09-25 11:19:30,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:30,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079871953] [2020-09-25 11:19:30,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:31,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:31,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:31,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:31,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 11:19:31,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:31,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 875 [2020-09-25 11:19:31,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:31,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:31,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:19:31,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:31,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 11:19:31,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 11:19:32,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:32,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:32,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:32,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:32,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:32,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:19:32,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:32,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:32,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:32,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:32,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:19:32,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:32,087 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 11:19:32,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079871953] [2020-09-25 11:19:32,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:19:32,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:19:32,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810458973] [2020-09-25 11:19:32,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:19:32,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:32,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:19:32,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:19:32,121 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 11:19:34,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:34,400 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 11:19:34,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:19:34,407 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-09-25 11:19:34,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:34,437 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 11:19:34,437 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 11:19:34,446 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 11:19:34,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 11:19:34,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 11:19:34,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 11:19:34,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 11:19:34,539 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 45 [2020-09-25 11:19:34,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:34,540 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 11:19:34,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:19:34,540 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 11:19:34,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-25 11:19:34,547 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:34,548 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:34,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:19:34,548 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:34,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:34,549 INFO L82 PathProgramCache]: Analyzing trace with hash 2073113520, now seen corresponding path program 1 times [2020-09-25 11:19:34,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:34,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868688090] [2020-09-25 11:19:34,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:34,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:34,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:34,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:34,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:34,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:39,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:39,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 11:19:39,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:19:39,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4445 [2020-09-25 11:19:39,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:39,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:39,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:19:39,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:19:39,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 11:19:39,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:39,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:39,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:39,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:39,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:39,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:39,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:19:39,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:39,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:39,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:39,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:39,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:19:39,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:39,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:39,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:39,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:39,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:39,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:19:39,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:39,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-25 11:19:39,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:39,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:39,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:39,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:39,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 11:19:39,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:39,408 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:19:39,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868688090] [2020-09-25 11:19:39,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:39,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:19:39,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427809875] [2020-09-25 11:19:39,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:19:39,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:39,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:19:39,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:19:39,413 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 6 states. [2020-09-25 11:19:41,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:41,734 INFO L93 Difference]: Finished difference Result 1376 states and 1765 transitions. [2020-09-25 11:19:41,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:19:41,734 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2020-09-25 11:19:41,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:41,741 INFO L225 Difference]: With dead ends: 1376 [2020-09-25 11:19:41,741 INFO L226 Difference]: Without dead ends: 847 [2020-09-25 11:19:41,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:19:41,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-09-25 11:19:41,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2020-09-25 11:19:41,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-09-25 11:19:41,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1084 transitions. [2020-09-25 11:19:41,784 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1084 transitions. Word has length 124 [2020-09-25 11:19:41,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:41,785 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1084 transitions. [2020-09-25 11:19:41,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:19:41,786 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1084 transitions. [2020-09-25 11:19:41,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 11:19:41,792 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:41,792 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:41,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:19:41,793 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:41,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:41,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1595126062, now seen corresponding path program 1 times [2020-09-25 11:19:41,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:41,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150732509] [2020-09-25 11:19:41,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:41,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:41,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:42,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:42,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:44,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:44,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:44,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:46,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:46,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 11:19:46,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:19:46,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4734 [2020-09-25 11:19:46,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:46,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:19:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 11:19:46,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:46,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:46,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:46,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:46,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:46,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:46,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 11:19:46,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:46,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:46,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:46,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:46,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:19:46,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:46,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:46,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:46,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:46,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:19:46,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:46,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-25 11:19:46,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:46,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:46,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:19:46,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:46,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:19:46,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:47,014 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:47,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150732509] [2020-09-25 11:19:47,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:47,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:19:47,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613722678] [2020-09-25 11:19:47,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:19:47,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:47,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:19:47,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:19:47,019 INFO L87 Difference]: Start difference. First operand 847 states and 1084 transitions. Second operand 8 states. [2020-09-25 11:19:50,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:50,548 INFO L93 Difference]: Finished difference Result 2642 states and 3685 transitions. [2020-09-25 11:19:50,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:19:50,549 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 134 [2020-09-25 11:19:50,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:50,563 INFO L225 Difference]: With dead ends: 2642 [2020-09-25 11:19:50,563 INFO L226 Difference]: Without dead ends: 1960 [2020-09-25 11:19:50,568 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 11:19:50,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2020-09-25 11:19:50,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1519. [2020-09-25 11:19:50,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1519 states. [2020-09-25 11:19:50,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 1995 transitions. [2020-09-25 11:19:50,645 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 1995 transitions. Word has length 134 [2020-09-25 11:19:50,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:50,651 INFO L479 AbstractCegarLoop]: Abstraction has 1519 states and 1995 transitions. [2020-09-25 11:19:50,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:19:50,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 1995 transitions. [2020-09-25 11:19:50,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 11:19:50,665 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:50,669 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:50,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:19:50,670 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:50,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:50,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1117469357, now seen corresponding path program 1 times [2020-09-25 11:19:50,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:50,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073018494] [2020-09-25 11:19:50,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:50,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:51,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:51,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:51,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:51,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:53,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:55,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:55,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 11:19:55,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:19:55,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 11:19:55,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:55,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:55,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:19:55,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:19:55,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 11:19:55,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:55,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:55,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:55,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:55,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:55,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:55,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:19:55,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:55,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:55,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:55,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:55,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:19:55,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:55,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:55,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:56,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:56,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 11:19:56,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:56,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-09-25 11:19:56,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:56,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:56,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:56,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:56,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 11:19:56,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:56,329 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:56,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073018494] [2020-09-25 11:19:56,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:19:56,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 11:19:56,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113870831] [2020-09-25 11:19:56,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:19:56,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:56,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:19:56,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:19:56,332 INFO L87 Difference]: Start difference. First operand 1519 states and 1995 transitions. Second operand 8 states. [2020-09-25 11:19:59,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:59,251 INFO L93 Difference]: Finished difference Result 4773 states and 6708 transitions. [2020-09-25 11:19:59,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:19:59,252 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 191 [2020-09-25 11:19:59,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:59,277 INFO L225 Difference]: With dead ends: 4773 [2020-09-25 11:19:59,277 INFO L226 Difference]: Without dead ends: 3419 [2020-09-25 11:19:59,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:19:59,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3419 states. [2020-09-25 11:19:59,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3419 to 3379. [2020-09-25 11:19:59,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3379 states. [2020-09-25 11:19:59,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3379 states to 3379 states and 4355 transitions. [2020-09-25 11:19:59,417 INFO L78 Accepts]: Start accepts. Automaton has 3379 states and 4355 transitions. Word has length 191 [2020-09-25 11:19:59,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:59,418 INFO L479 AbstractCegarLoop]: Abstraction has 3379 states and 4355 transitions. [2020-09-25 11:19:59,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:19:59,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3379 states and 4355 transitions. [2020-09-25 11:19:59,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 11:19:59,425 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:59,425 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 11:19:59,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:19:59,426 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:59,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:59,426 INFO L82 PathProgramCache]: Analyzing trace with hash -877884703, now seen corresponding path program 1 times [2020-09-25 11:19:59,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:59,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740534545] [2020-09-25 11:19:59,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:59,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:59,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:59,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:00,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:00,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:02,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:04,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:04,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-25 11:20:04,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:20:04,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 11:20:04,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:04,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:04,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:20:04,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:20:04,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 11:20:04,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:04,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:04,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:04,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:04,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:04,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:04,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 11:20:04,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:04,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:04,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:04,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:04,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:20:04,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:04,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:04,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:04,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:04,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:20:04,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:04,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 11:20:04,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:04,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:04,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:04,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:04,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:20:04,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:04,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:20:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:04,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:04,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:04,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:20:04,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:04,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 11:20:04,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:04,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:04,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:04,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:04,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:20:04,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:05,133 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 61 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:20:05,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740534545] [2020-09-25 11:20:05,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:05,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:20:05,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819055825] [2020-09-25 11:20:05,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:20:05,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:05,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:20:05,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:20:05,137 INFO L87 Difference]: Start difference. First operand 3379 states and 4355 transitions. Second operand 10 states. [2020-09-25 11:20:08,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:08,743 INFO L93 Difference]: Finished difference Result 7314 states and 9656 transitions. [2020-09-25 11:20:08,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 11:20:08,744 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 213 [2020-09-25 11:20:08,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:08,766 INFO L225 Difference]: With dead ends: 7314 [2020-09-25 11:20:08,767 INFO L226 Difference]: Without dead ends: 4100 [2020-09-25 11:20:08,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:20:08,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4100 states. [2020-09-25 11:20:08,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4100 to 3895. [2020-09-25 11:20:08,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3895 states. [2020-09-25 11:20:08,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3895 states to 3895 states and 5047 transitions. [2020-09-25 11:20:08,889 INFO L78 Accepts]: Start accepts. Automaton has 3895 states and 5047 transitions. Word has length 213 [2020-09-25 11:20:08,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:08,889 INFO L479 AbstractCegarLoop]: Abstraction has 3895 states and 5047 transitions. [2020-09-25 11:20:08,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:20:08,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3895 states and 5047 transitions. [2020-09-25 11:20:08,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 11:20:08,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:08,894 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 11:20:08,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:20:08,895 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:08,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:08,895 INFO L82 PathProgramCache]: Analyzing trace with hash 342237492, now seen corresponding path program 1 times [2020-09-25 11:20:08,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:08,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028090781] [2020-09-25 11:20:08,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:08,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:09,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:09,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:09,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:12,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:12,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:12,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:13,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:13,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:13,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-25 11:20:13,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:20:13,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 11:20:13,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:13,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:13,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:20:13,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:20:13,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 11:20:13,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:14,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:14,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:14,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:14,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:14,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:14,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:20:14,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:14,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:14,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:20:14,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:14,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:20:14,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:14,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:14,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:14,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:14,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:14,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:20:14,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:14,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 11:20:14,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:14,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:14,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:14,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:14,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 11:20:14,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:14,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 11:20:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:14,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:14,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:14,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:14,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 11:20:14,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:14,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-09-25 11:20:14,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:14,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:14,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:14,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:14,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 11:20:14,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:14,717 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:20:14,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028090781] [2020-09-25 11:20:14,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:14,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:20:14,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224918897] [2020-09-25 11:20:14,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:20:14,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:14,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:20:14,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:20:14,722 INFO L87 Difference]: Start difference. First operand 3895 states and 5047 transitions. Second operand 11 states.