/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_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:19:45,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:19:45,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:19:45,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:19:45,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:19:45,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:19:45,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:19:45,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:19:45,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:19:45,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:19:45,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:19:45,631 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:19:45,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:19:45,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:19:45,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:19:45,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:19:45,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:19:45,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:19:45,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:19:45,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:19:45,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:19:45,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:19:45,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:19:45,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:19:45,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:19:45,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:19:45,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:19:45,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:19:45,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:19:45,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:19:45,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:19:45,661 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:19:45,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:19:45,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:19:45,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:19:45,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:19:45,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:19:45,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:19:45,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:19:45,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:19:45,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:19:45,668 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 11:19:45,696 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:19:45,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:19:45,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:19:45,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:19:45,698 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:19:45,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:19:45,698 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:19:45,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:19:45,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:19:45,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:19:45,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:19:45,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:19:45,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:19:45,700 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:19:45,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:19:45,700 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:19:45,700 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:19:45,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:19:45,701 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:19:45,701 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:19:45,701 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:19:45,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:19:45,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:19:45,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:19:45,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:19:45,702 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:19:45,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:19:45,703 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:19:45,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:19:45,703 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 11:19:46,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:19:46,218 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:19:46,225 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:19:46,228 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:19:46,229 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:19:46,230 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-09-25 11:19:46,326 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3b3f7965/00c26b39f59d46c1a08e97f7c021bbdb/FLAGc0f0fe631 [2020-09-25 11:19:46,982 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:19:46,983 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-09-25 11:19:47,000 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3b3f7965/00c26b39f59d46c1a08e97f7c021bbdb/FLAGc0f0fe631 [2020-09-25 11:19:47,220 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3b3f7965/00c26b39f59d46c1a08e97f7c021bbdb [2020-09-25 11:19:47,232 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:19:47,239 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:19:47,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:19:47,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:19:47,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:19:47,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:19:47" (1/1) ... [2020-09-25 11:19:47,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4187f794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:47, skipping insertion in model container [2020-09-25 11:19:47,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:19:47" (1/1) ... [2020-09-25 11:19:47,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:19:47,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:19:47,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:19:47,791 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:19:48,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:19:48,067 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:19:48,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:48 WrapperNode [2020-09-25 11:19:48,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:19:48,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:19:48,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:19:48,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:19:48,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:48" (1/1) ... [2020-09-25 11:19:48,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:48" (1/1) ... [2020-09-25 11:19:48,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:48" (1/1) ... [2020-09-25 11:19:48,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:48" (1/1) ... [2020-09-25 11:19:48,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:48" (1/1) ... [2020-09-25 11:19:48,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:48" (1/1) ... [2020-09-25 11:19:48,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:48" (1/1) ... [2020-09-25 11:19:48,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:19:48,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:19:48,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:19:48,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:19:48,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:48" (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 11:19:48,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:19:48,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:19:48,302 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:19:48,303 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:19:48,303 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:19:48,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:19:48,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:19:48,304 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:19:48,304 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:19:48,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:19:48,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:19:49,823 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:19:49,823 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:19:49,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:19:49 BoogieIcfgContainer [2020-09-25 11:19:49,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:19:49,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:19:49,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:19:49,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:19:49,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:19:47" (1/3) ... [2020-09-25 11:19:49,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d318c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:19:49, skipping insertion in model container [2020-09-25 11:19:49,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:48" (2/3) ... [2020-09-25 11:19:49,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d318c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:19:49, skipping insertion in model container [2020-09-25 11:19:49,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:19:49" (3/3) ... [2020-09-25 11:19:49,857 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label44.c [2020-09-25 11:19:49,871 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:19:49,887 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:19:49,914 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:19:49,959 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:19:49,960 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:19:49,960 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:19:49,960 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:19:49,960 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:19:49,961 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:19:49,961 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:19:49,961 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:19:50,003 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:19:50,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 11:19:50,023 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:50,024 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] [2020-09-25 11:19:50,025 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:50,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:50,032 INFO L82 PathProgramCache]: Analyzing trace with hash 2145887279, now seen corresponding path program 1 times [2020-09-25 11:19:50,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:50,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676288411] [2020-09-25 11:19:50,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:50,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:50,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:51,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:51,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:19:51,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:51,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 976 [2020-09-25 11:19:51,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:51,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:51,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:19:51,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:19:51,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 11:19:51,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:19:51,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:51,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:51,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:51,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:51,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:51,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:19:51,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:51,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:51,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:51,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:51,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:19:51,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:51,572 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 11:19:51,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676288411] [2020-09-25 11:19:51,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:19:51,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:19:51,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936196653] [2020-09-25 11:19:51,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:19:51,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:51,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:19:51,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:19:51,615 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 11:19:53,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:53,596 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 11:19:53,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:19:53,600 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-09-25 11:19:53,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:53,623 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 11:19:53,624 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 11:19:53,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 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 11:19:53,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 11:19:53,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 11:19:53,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 11:19:53,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 11:19:53,733 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 76 [2020-09-25 11:19:53,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:53,734 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 11:19:53,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:19:53,734 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 11:19:53,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 11:19:53,744 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:53,745 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:19:53,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:19:53,745 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:53,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:53,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1884656088, now seen corresponding path program 1 times [2020-09-25 11:19:53,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:53,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969616554] [2020-09-25 11:19:53,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:53,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:54,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:54,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:54,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:54,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:56,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:56,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 11:19:56,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:19:56,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2344 [2020-09-25 11:19:56,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:56,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:56,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:19:56,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:19:56,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 11:19:56,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:56,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:56,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:56,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:56,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:56,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:56,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:19:56,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:56,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:56,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:56,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:56,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:19:56,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:56,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:56,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:56,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:56,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:56,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 11:19:56,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:56,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 11:19:56,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:56,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:56,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:56,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:56,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 11:19:56,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:56,493 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:19:56,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969616554] [2020-09-25 11:19:56,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:56,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:19:56,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799351235] [2020-09-25 11:19:56,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:19:56,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:56,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:19:56,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:19:56,498 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 6 states. [2020-09-25 11:19:58,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:58,673 INFO L93 Difference]: Finished difference Result 1437 states and 1858 transitions. [2020-09-25 11:19:58,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:19:58,675 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2020-09-25 11:19:58,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:58,685 INFO L225 Difference]: With dead ends: 1437 [2020-09-25 11:19:58,685 INFO L226 Difference]: Without dead ends: 909 [2020-09-25 11:19:58,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:19:58,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2020-09-25 11:19:58,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 859. [2020-09-25 11:19:58,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 859 states. [2020-09-25 11:19:58,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1029 transitions. [2020-09-25 11:19:58,740 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1029 transitions. Word has length 156 [2020-09-25 11:19:58,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:58,741 INFO L479 AbstractCegarLoop]: Abstraction has 859 states and 1029 transitions. [2020-09-25 11:19:58,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:19:58,741 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1029 transitions. [2020-09-25 11:19:58,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 11:19:58,750 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:58,751 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:19:58,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:19:58,751 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:58,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:58,752 INFO L82 PathProgramCache]: Analyzing trace with hash -430892963, now seen corresponding path program 1 times [2020-09-25 11:19:58,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:58,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058830446] [2020-09-25 11:19:58,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:58,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:59,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:59,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:59,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:00,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:01,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:03,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:03,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 11:20:03,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:20:03,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:20:03,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:03,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:03,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:20:03,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:20:03,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-09-25 11:20:03,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:03,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:03,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:03,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:03,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:03,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:03,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:20:03,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:03,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:03,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:03,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:03,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:20:03,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:03,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:04,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:04,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:04,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:20:04,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:04,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 11:20:04,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:04,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:04,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:04,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:04,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:20:04,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:04,251 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:04,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058830446] [2020-09-25 11:20:04,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:04,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:20:04,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389036939] [2020-09-25 11:20:04,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:20:04,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:04,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:20:04,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:20:04,257 INFO L87 Difference]: Start difference. First operand 859 states and 1029 transitions. Second operand 8 states. [2020-09-25 11:20:07,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:07,825 INFO L93 Difference]: Finished difference Result 2960 states and 3753 transitions. [2020-09-25 11:20:07,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:20:07,826 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-09-25 11:20:07,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:07,852 INFO L225 Difference]: With dead ends: 2960 [2020-09-25 11:20:07,852 INFO L226 Difference]: Without dead ends: 2116 [2020-09-25 11:20:07,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:20:07,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2020-09-25 11:20:07,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 1995. [2020-09-25 11:20:07,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1995 states. [2020-09-25 11:20:07,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 2467 transitions. [2020-09-25 11:20:07,961 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 2467 transitions. Word has length 165 [2020-09-25 11:20:07,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:07,967 INFO L479 AbstractCegarLoop]: Abstraction has 1995 states and 2467 transitions. [2020-09-25 11:20:07,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:20:07,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 2467 transitions. [2020-09-25 11:20:07,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-25 11:20:07,981 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:07,981 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:20:07,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:20:07,982 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:07,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:07,983 INFO L82 PathProgramCache]: Analyzing trace with hash -892390744, now seen corresponding path program 1 times [2020-09-25 11:20:07,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:07,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152838676] [2020-09-25 11:20:07,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:08,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:08,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:08,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:09,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:09,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:11,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:11,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:11,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:12,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:12,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-09-25 11:20:12,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:20:12,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4232 [2020-09-25 11:20:12,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:12,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:12,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:20:12,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:20:12,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 236 [2020-09-25 11:20:12,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:12,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:12,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:12,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:12,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:12,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:12,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:20:12,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:12,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:12,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:12,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:12,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:20:12,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:12,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:12,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:12,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:12,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:20:12,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:12,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 11:20:12,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:12,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:12,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:12,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:12,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:20:12,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:12,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:20:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:12,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:12,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:12,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:12,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 11:20:12,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:12,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 11:20:12,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:12,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:12,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:12,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:12,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 11:20:12,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:12,958 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 14 proven. 171 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 11:20:12,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152838676] [2020-09-25 11:20:12,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:12,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:20:12,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197476519] [2020-09-25 11:20:12,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:20:12,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:12,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:20:12,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:20:12,966 INFO L87 Difference]: Start difference. First operand 1995 states and 2467 transitions. Second operand 9 states. [2020-09-25 11:20:16,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:16,637 INFO L93 Difference]: Finished difference Result 5213 states and 6691 transitions. [2020-09-25 11:20:16,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:20:16,638 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 235 [2020-09-25 11:20:16,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:16,656 INFO L225 Difference]: With dead ends: 5213 [2020-09-25 11:20:16,656 INFO L226 Difference]: Without dead ends: 3233 [2020-09-25 11:20:16,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:20:16,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3233 states. [2020-09-25 11:20:16,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3233 to 3140. [2020-09-25 11:20:16,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3140 states. [2020-09-25 11:20:16,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3140 states to 3140 states and 3951 transitions. [2020-09-25 11:20:16,755 INFO L78 Accepts]: Start accepts. Automaton has 3140 states and 3951 transitions. Word has length 235 [2020-09-25 11:20:16,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:16,756 INFO L479 AbstractCegarLoop]: Abstraction has 3140 states and 3951 transitions. [2020-09-25 11:20:16,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:20:16,756 INFO L276 IsEmpty]: Start isEmpty. Operand 3140 states and 3951 transitions. [2020-09-25 11:20:16,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-25 11:20:16,764 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:16,765 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:20:16,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:20:16,765 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:16,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:16,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1938914842, now seen corresponding path program 1 times [2020-09-25 11:20:16,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:16,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890475091] [2020-09-25 11:20:16,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:16,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:16,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:17,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:17,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:18,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:18,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:18,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:19,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:19,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:21,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:21,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-09-25 11:20:21,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:20:21,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:20:21,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:21,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:21,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:20:21,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:20:21,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-09-25 11:20:21,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:21,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:21,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:21,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:21,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:21,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:21,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:20:21,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:21,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:21,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:20:21,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:21,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:20:21,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:22,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:22,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:22,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:22,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:22,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:20:22,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:22,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 11:20:22,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:22,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:22,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:22,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:22,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:20:22,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:22,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 11:20:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:22,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:22,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:22,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:22,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 11:20:22,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:22,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-09-25 11:20:22,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:22,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:22,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:22,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:22,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 11:20:22,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:22,638 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 11:20:22,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890475091] [2020-09-25 11:20:22,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:22,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:20:22,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790525629] [2020-09-25 11:20:22,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:20:22,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:22,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:20:22,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:20:22,641 INFO L87 Difference]: Start difference. First operand 3140 states and 3951 transitions. Second operand 9 states. [2020-09-25 11:20:25,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:25,944 INFO L93 Difference]: Finished difference Result 7108 states and 9252 transitions. [2020-09-25 11:20:25,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:20:25,945 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 248 [2020-09-25 11:20:25,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:25,966 INFO L225 Difference]: With dead ends: 7108 [2020-09-25 11:20:25,966 INFO L226 Difference]: Without dead ends: 4095 [2020-09-25 11:20:25,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:20:25,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4095 states. [2020-09-25 11:20:26,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4095 to 3897. [2020-09-25 11:20:26,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3897 states. [2020-09-25 11:20:26,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3897 states to 3897 states and 4862 transitions. [2020-09-25 11:20:26,085 INFO L78 Accepts]: Start accepts. Automaton has 3897 states and 4862 transitions. Word has length 248 [2020-09-25 11:20:26,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:26,086 INFO L479 AbstractCegarLoop]: Abstraction has 3897 states and 4862 transitions. [2020-09-25 11:20:26,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:20:26,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3897 states and 4862 transitions. [2020-09-25 11:20:26,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-09-25 11:20:26,095 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:26,095 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 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 11:20:26,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:20:26,096 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:26,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:26,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1773252098, now seen corresponding path program 1 times [2020-09-25 11:20:26,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:26,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5746311] [2020-09-25 11:20:26,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:26,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:26,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:26,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:29,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:29,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:31,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:31,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-09-25 11:20:31,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:20:31,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:20:31,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:31,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:31,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:20:31,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:20:31,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-09-25 11:20:31,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:31,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:31,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:31,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:31,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:31,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:31,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 11:20:31,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:31,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:31,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:20:31,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:31,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:20:31,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:31,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:31,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:31,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:31,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:31,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 11:20:31,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:31,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-25 11:20:31,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:31,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:31,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:20:31,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:31,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 11:20:31,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:31,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 11:20:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:31,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:31,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:31,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:31,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:20:31,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:31,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-25 11:20:31,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:31,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 11:20:31,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:32,055 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-25 11:20:32,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5746311] [2020-09-25 11:20:32,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:32,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:20:32,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944955145] [2020-09-25 11:20:32,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:20:32,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:32,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:20:32,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:20:32,060 INFO L87 Difference]: Start difference. First operand 3897 states and 4862 transitions. Second operand 11 states.