/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_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:18:54,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:18:54,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:18:54,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:18:54,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:18:54,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:18:54,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:18:54,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:18:54,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:18:54,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:18:54,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:18:54,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:18:54,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:18:54,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:18:54,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:18:54,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:18:54,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:18:54,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:18:54,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:18:54,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:18:54,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:18:54,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:18:54,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:18:54,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:18:54,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:18:54,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:18:54,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:18:54,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:18:54,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:18:54,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:18:54,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:18:54,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:18:54,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:18:54,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:18:54,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:18:54,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:18:54,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:18:54,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:18:54,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:18:54,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:18:54,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:18:54,642 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 11:18:54,670 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:18:54,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:18:54,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:18:54,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:18:54,672 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:18:54,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:18:54,672 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:18:54,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:18:54,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:18:54,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:18:54,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:18:54,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:18:54,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:18:54,674 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:18:54,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:18:54,674 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:18:54,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:18:54,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:18:54,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:18:54,675 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:18:54,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:18:54,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:18:54,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:18:54,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:18:54,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:18:54,676 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:18:54,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:18:54,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:18:54,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:18:54,677 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 11:18:55,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:18:55,181 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:18:55,186 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:18:55,189 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:18:55,190 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:18:55,191 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label20.c [2020-09-25 11:18:55,272 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f169585f/d6e98ffaa442419cb6327465d727ae25/FLAGb16a8be59 [2020-09-25 11:18:55,872 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:18:55,873 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label20.c [2020-09-25 11:18:55,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f169585f/d6e98ffaa442419cb6327465d727ae25/FLAGb16a8be59 [2020-09-25 11:18:56,146 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f169585f/d6e98ffaa442419cb6327465d727ae25 [2020-09-25 11:18:56,162 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:18:56,171 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:18:56,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:18:56,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:18:56,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:18:56,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:56" (1/1) ... [2020-09-25 11:18:56,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@788ef5e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:56, skipping insertion in model container [2020-09-25 11:18:56,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:56" (1/1) ... [2020-09-25 11:18:56,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:18:56,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:18:56,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:18:56,926 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:18:57,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:18:57,136 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:18:57,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:57 WrapperNode [2020-09-25 11:18:57,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:18:57,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:18:57,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:18:57,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:18:57,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:57" (1/1) ... [2020-09-25 11:18:57,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:57" (1/1) ... [2020-09-25 11:18:57,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:57" (1/1) ... [2020-09-25 11:18:57,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:57" (1/1) ... [2020-09-25 11:18:57,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:57" (1/1) ... [2020-09-25 11:18:57,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:57" (1/1) ... [2020-09-25 11:18:57,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:57" (1/1) ... [2020-09-25 11:18:57,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:18:57,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:18:57,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:18:57,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:18:57,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:57" (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 11:18:57,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:18:57,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:18:57,401 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:18:57,401 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:18:57,402 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:18:57,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:18:57,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:18:57,404 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:18:57,405 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:18:57,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:18:57,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:18:58,873 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:18:58,873 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:18:58,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:58 BoogieIcfgContainer [2020-09-25 11:18:58,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:18:58,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:18:58,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:18:58,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:18:58,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:18:56" (1/3) ... [2020-09-25 11:18:58,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c03097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:58, skipping insertion in model container [2020-09-25 11:18:58,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:57" (2/3) ... [2020-09-25 11:18:58,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c03097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:58, skipping insertion in model container [2020-09-25 11:18:58,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:58" (3/3) ... [2020-09-25 11:18:58,894 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label20.c [2020-09-25 11:18:58,909 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:18:58,922 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:18:58,949 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:18:58,989 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:18:58,990 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:18:58,990 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:18:58,990 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:18:58,990 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:18:58,991 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:18:58,991 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:18:58,991 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:18:59,027 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:18:59,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 11:18:59,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:59,039 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] [2020-09-25 11:18:59,040 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:59,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:59,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1331013031, now seen corresponding path program 1 times [2020-09-25 11:18:59,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:59,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164536142] [2020-09-25 11:18:59,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:59,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:59,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:59,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 11:18:59,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:59,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 542 [2020-09-25 11:18:59,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:59,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:59,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:18:59,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:18:59,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 11:18:59,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:18:59,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:59,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:59,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:59,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:59,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:59,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:18:59,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:59,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:59,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:59,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:59,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:18:59,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:00,008 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 11:19:00,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164536142] [2020-09-25 11:19:00,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:19:00,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:19:00,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130979389] [2020-09-25 11:19:00,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:19:00,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:00,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:19:00,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:19:00,045 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 11:19:02,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:02,134 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 11:19:02,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:19:02,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-25 11:19:02,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:02,159 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 11:19:02,160 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 11:19:02,171 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 11:19:02,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 11:19:02,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 11:19:02,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 11:19:02,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 11:19:02,274 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 47 [2020-09-25 11:19:02,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:02,275 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 11:19:02,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:19:02,275 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 11:19:02,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 11:19:02,282 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:02,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:02,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:19:02,284 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:02,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:02,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1207738435, now seen corresponding path program 1 times [2020-09-25 11:19:02,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:02,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269874799] [2020-09-25 11:19:02,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:02,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:02,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:02,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:02,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:04,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:04,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 11:19:04,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:19:04,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1691 [2020-09-25 11:19:04,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:04,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:04,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:19:04,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:19:04,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:19:04,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:19:04,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:04,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:04,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:04,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:04,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:04,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:19:04,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:04,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:04,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:04,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:04,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:19:04,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:04,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:04,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:04,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:04,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 11:19:04,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:04,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 11:19:04,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:04,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:04,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:04,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:04,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 11:19:04,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 11:19:04,494 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:04,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269874799] [2020-09-25 11:19:04,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:19:04,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:19:04,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600765976] [2020-09-25 11:19:04,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:19:04,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:04,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:19:04,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:19:04,499 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 11:19:06,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:06,850 INFO L93 Difference]: Finished difference Result 1423 states and 1832 transitions. [2020-09-25 11:19:06,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:19:06,851 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-09-25 11:19:06,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:06,857 INFO L225 Difference]: With dead ends: 1423 [2020-09-25 11:19:06,857 INFO L226 Difference]: Without dead ends: 895 [2020-09-25 11:19:06,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:19:06,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2020-09-25 11:19:06,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 857. [2020-09-25 11:19:06,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 857 states. [2020-09-25 11:19:06,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1029 transitions. [2020-09-25 11:19:06,907 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1029 transitions. Word has length 127 [2020-09-25 11:19:06,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:06,907 INFO L479 AbstractCegarLoop]: Abstraction has 857 states and 1029 transitions. [2020-09-25 11:19:06,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:19:06,908 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1029 transitions. [2020-09-25 11:19:06,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 11:19:06,913 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:06,913 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:06,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:19:06,913 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:06,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:06,914 INFO L82 PathProgramCache]: Analyzing trace with hash 843318586, now seen corresponding path program 1 times [2020-09-25 11:19:06,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:06,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923552169] [2020-09-25 11:19:06,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:07,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:07,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:07,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:07,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:07,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:10,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:10,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:10,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:11,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:11,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 11:19:11,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:19:11,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4874 [2020-09-25 11:19:11,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:11,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:11,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:19:11,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:11,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 11:19:11,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:11,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:12,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:12,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:12,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:12,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:12,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 11:19:12,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:12,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:12,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:12,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:12,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:19:12,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:12,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:12,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:12,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:12,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:19:12,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:12,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 11:19:12,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:12,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:12,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:19:12,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:12,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:19:12,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:12,336 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:12,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923552169] [2020-09-25 11:19:12,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:12,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:19:12,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706587933] [2020-09-25 11:19:12,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:19:12,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:12,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:19:12,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:19:12,342 INFO L87 Difference]: Start difference. First operand 857 states and 1029 transitions. Second operand 8 states. [2020-09-25 11:19:15,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:15,736 INFO L93 Difference]: Finished difference Result 2954 states and 3752 transitions. [2020-09-25 11:19:15,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:19:15,737 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 136 [2020-09-25 11:19:15,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:15,760 INFO L225 Difference]: With dead ends: 2954 [2020-09-25 11:19:15,761 INFO L226 Difference]: Without dead ends: 2112 [2020-09-25 11:19:15,767 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 11:19:15,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2020-09-25 11:19:15,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 1995. [2020-09-25 11:19:15,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1995 states. [2020-09-25 11:19:15,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 2472 transitions. [2020-09-25 11:19:15,880 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 2472 transitions. Word has length 136 [2020-09-25 11:19:15,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:15,889 INFO L479 AbstractCegarLoop]: Abstraction has 1995 states and 2472 transitions. [2020-09-25 11:19:15,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:19:15,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 2472 transitions. [2020-09-25 11:19:15,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 11:19:15,899 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:15,904 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:15,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:19:15,904 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:15,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:15,905 INFO L82 PathProgramCache]: Analyzing trace with hash 350854071, now seen corresponding path program 1 times [2020-09-25 11:19:15,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:15,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470196298] [2020-09-25 11:19:15,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:15,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:16,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:16,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:19,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:19,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:20,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:20,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 11:19:20,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:19:20,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:19:20,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:20,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:20,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:19:20,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:20,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 11:19:20,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:21,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:21,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:21,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:21,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:21,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:21,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:19:21,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:21,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:21,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:21,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:21,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:19:21,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:21,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:21,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:21,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:21,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 11:19:21,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:21,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-09-25 11:19:21,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:21,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:21,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:21,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:21,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 11:19:21,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:21,627 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:21,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470196298] [2020-09-25 11:19:21,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:19:21,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:19:21,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092131174] [2020-09-25 11:19:21,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:19:21,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:21,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:19:21,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:19:21,631 INFO L87 Difference]: Start difference. First operand 1995 states and 2472 transitions. Second operand 7 states. [2020-09-25 11:19:23,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:23,542 INFO L93 Difference]: Finished difference Result 4154 states and 5152 transitions. [2020-09-25 11:19:23,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:19:23,543 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2020-09-25 11:19:23,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:23,560 INFO L225 Difference]: With dead ends: 4154 [2020-09-25 11:19:23,560 INFO L226 Difference]: Without dead ends: 2174 [2020-09-25 11:19:23,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:19:23,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2174 states. [2020-09-25 11:19:23,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2174 to 2159. [2020-09-25 11:19:23,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2159 states. [2020-09-25 11:19:23,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2159 states to 2159 states and 2662 transitions. [2020-09-25 11:19:23,707 INFO L78 Accepts]: Start accepts. Automaton has 2159 states and 2662 transitions. Word has length 174 [2020-09-25 11:19:23,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:23,708 INFO L479 AbstractCegarLoop]: Abstraction has 2159 states and 2662 transitions. [2020-09-25 11:19:23,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:19:23,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2159 states and 2662 transitions. [2020-09-25 11:19:23,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-25 11:19:23,716 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:23,717 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, 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] [2020-09-25 11:19:23,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:19:23,717 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:23,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:23,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1483242834, now seen corresponding path program 1 times [2020-09-25 11:19:23,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:23,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182908635] [2020-09-25 11:19:23,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:23,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:23,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:23,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:25,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:25,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:27,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:27,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:27,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:28,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:28,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-25 11:19:28,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:19:28,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4608 [2020-09-25 11:19:28,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:28,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:28,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:19:28,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:28,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-25 11:19:28,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:19:28,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:28,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:28,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:28,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:28,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:28,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:19:28,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:28,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:28,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:28,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:28,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:19:28,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:28,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:28,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:28,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:28,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:19:28,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:28,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 11:19:28,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:28,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:28,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:19:28,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:28,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:19:28,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:28,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:19:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:28,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:28,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:28,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 11:19:28,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:28,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 11:19:28,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:28,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:28,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:28,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:28,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 11:19:28,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:28,988 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 67 proven. 70 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:19:28,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182908635] [2020-09-25 11:19:28,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:28,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:19:28,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831203715] [2020-09-25 11:19:28,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:19:28,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:28,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:19:28,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:19:28,990 INFO L87 Difference]: Start difference. First operand 2159 states and 2662 transitions. Second operand 10 states. [2020-09-25 11:19:32,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:32,007 INFO L93 Difference]: Finished difference Result 4572 states and 5737 transitions. [2020-09-25 11:19:32,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:19:32,008 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 206 [2020-09-25 11:19:32,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:32,022 INFO L225 Difference]: With dead ends: 4572 [2020-09-25 11:19:32,023 INFO L226 Difference]: Without dead ends: 2578 [2020-09-25 11:19:32,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2020-09-25 11:19:32,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2578 states. [2020-09-25 11:19:32,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2578 to 2529. [2020-09-25 11:19:32,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2529 states. [2020-09-25 11:19:32,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2529 states to 2529 states and 3103 transitions. [2020-09-25 11:19:32,101 INFO L78 Accepts]: Start accepts. Automaton has 2529 states and 3103 transitions. Word has length 206 [2020-09-25 11:19:32,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:32,102 INFO L479 AbstractCegarLoop]: Abstraction has 2529 states and 3103 transitions. [2020-09-25 11:19:32,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:19:32,102 INFO L276 IsEmpty]: Start isEmpty. Operand 2529 states and 3103 transitions. [2020-09-25 11:19:32,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 11:19:32,107 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:32,107 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, 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 11:19:32,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:19:32,108 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:32,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:32,108 INFO L82 PathProgramCache]: Analyzing trace with hash -862349572, now seen corresponding path program 1 times [2020-09-25 11:19:32,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:32,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819380898] [2020-09-25 11:19:32,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:32,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:32,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:32,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:32,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:34,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:34,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:34,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:35,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:36,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:37,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:37,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 11:19:37,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:19:37,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 11:19:37,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:37,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:37,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:19:37,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:19:37,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 11:19:37,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:37,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:37,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:37,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:37,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:37,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:37,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:19:37,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:37,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:37,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:19:37,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:37,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:19:37,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:37,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:37,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:37,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:37,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:37,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:19:37,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:37,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 11:19:37,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:37,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 11:19:37,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:37,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 11:19:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:37,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:37,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:37,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:37,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 11:19:37,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:37,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-09-25 11:19:37,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:37,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:37,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:37,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:37,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 11:19:37,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:38,253 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:19:38,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819380898] [2020-09-25 11:19:38,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:38,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:19:38,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970253652] [2020-09-25 11:19:38,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:19:38,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:38,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:19:38,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:19:38,257 INFO L87 Difference]: Start difference. First operand 2529 states and 3103 transitions. Second operand 11 states. [2020-09-25 11:19:41,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:41,862 INFO L93 Difference]: Finished difference Result 6504 states and 8844 transitions. [2020-09-25 11:19:41,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 11:19:41,863 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 219 [2020-09-25 11:19:41,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:41,887 INFO L225 Difference]: With dead ends: 6504 [2020-09-25 11:19:41,888 INFO L226 Difference]: Without dead ends: 3833 [2020-09-25 11:19:41,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2020-09-25 11:19:41,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3833 states. [2020-09-25 11:19:42,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3833 to 3615. [2020-09-25 11:19:42,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3615 states. [2020-09-25 11:19:42,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3615 states to 3615 states and 4446 transitions. [2020-09-25 11:19:42,020 INFO L78 Accepts]: Start accepts. Automaton has 3615 states and 4446 transitions. Word has length 219 [2020-09-25 11:19:42,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:42,021 INFO L479 AbstractCegarLoop]: Abstraction has 3615 states and 4446 transitions. [2020-09-25 11:19:42,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:19:42,021 INFO L276 IsEmpty]: Start isEmpty. Operand 3615 states and 4446 transitions. [2020-09-25 11:19:42,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-25 11:19:42,027 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:42,027 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:42,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:19:42,028 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:42,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:42,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1169867801, now seen corresponding path program 1 times [2020-09-25 11:19:42,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:42,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870466954] [2020-09-25 11:19:42,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:42,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:42,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking...