/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:24:39,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:24:39,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:24:39,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:24:39,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:24:39,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:24:39,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:24:39,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:24:39,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:24:39,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:24:39,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:24:39,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:24:39,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:24:39,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:24:39,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:24:39,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:24:39,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:24:39,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:24:39,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:24:39,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:24:39,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:24:39,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:24:39,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:24:39,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:24:39,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:24:39,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:24:39,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:24:39,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:24:39,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:24:39,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:24:39,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:24:39,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:24:39,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:24:39,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:24:39,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:24:39,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:24:39,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:24:39,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:24:39,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:24:39,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:24:39,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:24:39,639 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:24:39,663 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:24:39,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:24:39,665 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:24:39,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:24:39,665 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:24:39,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:24:39,666 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:24:39,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:24:39,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:24:39,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:24:39,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:24:39,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:24:39,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:24:39,667 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:24:39,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:24:39,668 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:24:39,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:24:39,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:24:39,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:24:39,668 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:24:39,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:24:39,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:24:39,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:24:39,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:24:39,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:24:39,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:24:39,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:24:39,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:24:39,670 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:24:39,670 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:24:40,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:24:40,146 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:24:40,151 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:24:40,152 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:24:40,153 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:24:40,154 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label36.c [2020-09-25 12:24:40,242 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/99b17582d/f4aab9d7c1b04403b9501b737ff69e07/FLAG859a6a3e1 [2020-09-25 12:24:40,872 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:24:40,872 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label36.c [2020-09-25 12:24:40,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/99b17582d/f4aab9d7c1b04403b9501b737ff69e07/FLAG859a6a3e1 [2020-09-25 12:24:41,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/99b17582d/f4aab9d7c1b04403b9501b737ff69e07 [2020-09-25 12:24:41,136 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:24:41,142 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:24:41,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:24:41,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:24:41,151 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:24:41,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:24:41" (1/1) ... [2020-09-25 12:24:41,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@763ad0aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:41, skipping insertion in model container [2020-09-25 12:24:41,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:24:41" (1/1) ... [2020-09-25 12:24:41,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:24:41,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:24:41,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:24:41,669 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:24:41,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:24:41,921 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:24:41,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:41 WrapperNode [2020-09-25 12:24:41,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:24:41,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:24:41,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:24:41,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:24:41,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:41" (1/1) ... [2020-09-25 12:24:41,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:41" (1/1) ... [2020-09-25 12:24:41,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:41" (1/1) ... [2020-09-25 12:24:41,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:41" (1/1) ... [2020-09-25 12:24:41,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:41" (1/1) ... [2020-09-25 12:24:42,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:41" (1/1) ... [2020-09-25 12:24:42,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:41" (1/1) ... [2020-09-25 12:24:42,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:24:42,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:24:42,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:24:42,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:24:42,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:24:42,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:24:42,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:24:42,132 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:24:42,133 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:24:42,133 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:24:42,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:24:42,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:24:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:24:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:24:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:24:42,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:24:43,621 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:24:43,622 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:24:43,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:24:43 BoogieIcfgContainer [2020-09-25 12:24:43,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:24:43,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:24:43,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:24:43,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:24:43,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:24:41" (1/3) ... [2020-09-25 12:24:43,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b6fae65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:24:43, skipping insertion in model container [2020-09-25 12:24:43,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:41" (2/3) ... [2020-09-25 12:24:43,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b6fae65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:24:43, skipping insertion in model container [2020-09-25 12:24:43,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:24:43" (3/3) ... [2020-09-25 12:24:43,640 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label36.c [2020-09-25 12:24:43,651 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:24:43,663 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:24:43,685 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:24:43,718 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:24:43,719 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:24:43,719 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:24:43,719 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:24:43,719 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:24:43,719 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:24:43,719 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:24:43,720 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:24:43,752 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 12:24:43,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 12:24:43,776 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:24:43,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:24:43,778 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:24:43,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:24:43,786 INFO L82 PathProgramCache]: Analyzing trace with hash -404902623, now seen corresponding path program 1 times [2020-09-25 12:24:43,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:24:43,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143623590] [2020-09-25 12:24:43,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:24:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:44,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:44,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:45,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:45,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:46,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:46,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:47,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:49,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:49,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 12:24:49,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:24:49,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 12:24:49,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:49,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:49,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:24:49,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:24:49,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 12:24:49,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:24:49,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:24:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:49,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:49,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:49,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:24:49,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:49,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 12:24:49,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:49,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:49,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:24:49,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:49,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:24:49,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:49,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:24:49,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143623590] [2020-09-25 12:24:49,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:24:49,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:24:49,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744490729] [2020-09-25 12:24:49,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:24:49,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:24:49,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:24:49,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:24:49,451 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 12:24:51,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:24:51,640 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 12:24:51,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:24:51,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-09-25 12:24:51,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:24:51,665 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 12:24:51,665 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 12:24:51,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:24:51,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 12:24:51,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 12:24:51,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 12:24:51,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 12:24:51,782 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 158 [2020-09-25 12:24:51,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:24:51,783 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 12:24:51,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:24:51,783 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 12:24:51,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 12:24:51,798 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:24:51,799 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:24:51,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:24:51,799 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:24:51,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:24:51,800 INFO L82 PathProgramCache]: Analyzing trace with hash 856620700, now seen corresponding path program 1 times [2020-09-25 12:24:51,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:24:51,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230264487] [2020-09-25 12:24:51,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:24:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:51,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:51,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:52,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:52,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:56,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:56,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 12:24:56,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:24:56,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:24:56,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:56,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:56,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:24:56,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 12:24:56,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 12:24:56,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:57,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:24:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:57,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:57,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:57,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:24:57,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:57,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 12:24:57,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:57,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:57,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:24:57,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:57,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:24:57,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:57,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:24:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:57,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:57,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:57,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:57,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 12:24:57,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:24:57,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 12:24:57,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:57,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:57,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:24:57,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:57,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:24:57,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:57,457 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:24:57,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230264487] [2020-09-25 12:24:57,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:24:57,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:24:57,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362573034] [2020-09-25 12:24:57,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:24:57,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:24:57,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:24:57,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:24:57,463 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 11 states. [2020-09-25 12:25:00,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:00,942 INFO L93 Difference]: Finished difference Result 1927 states and 2548 transitions. [2020-09-25 12:25:00,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:25:00,945 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 192 [2020-09-25 12:25:00,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:00,954 INFO L225 Difference]: With dead ends: 1927 [2020-09-25 12:25:00,954 INFO L226 Difference]: Without dead ends: 887 [2020-09-25 12:25:00,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:25:00,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2020-09-25 12:25:01,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 722. [2020-09-25 12:25:01,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 722 states. [2020-09-25 12:25:01,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 845 transitions. [2020-09-25 12:25:01,030 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 845 transitions. Word has length 192 [2020-09-25 12:25:01,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:01,030 INFO L479 AbstractCegarLoop]: Abstraction has 722 states and 845 transitions. [2020-09-25 12:25:01,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:25:01,031 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 845 transitions. [2020-09-25 12:25:01,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 12:25:01,035 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:01,035 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:25:01,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:25:01,036 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:01,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:01,037 INFO L82 PathProgramCache]: Analyzing trace with hash 564185116, now seen corresponding path program 1 times [2020-09-25 12:25:01,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:01,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352099724] [2020-09-25 12:25:01,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:01,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:01,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:01,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:01,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:02,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:04,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:04,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:04,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:06,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:06,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 12:25:06,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:25:06,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 12:25:06,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:06,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:06,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:25:06,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 12:25:06,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 12:25:06,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:06,619 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 38 [2020-09-25 12:25:06,755 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-09-25 12:25:06,944 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 41 [2020-09-25 12:25:07,212 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 41 [2020-09-25 12:25:07,413 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 36 [2020-09-25 12:25:07,588 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 32 [2020-09-25 12:25:07,751 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 27 [2020-09-25 12:25:07,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:07,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:07,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:07,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:07,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:07,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:25:07,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:07,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:07,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:07,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:07,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:07,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:25:07,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:07,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:07,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:07,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:07,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 12:25:07,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:07,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 12:25:07,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:07,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:07,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:25:07,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:07,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 12:25:07,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:25:08,365 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:25:08,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352099724] [2020-09-25 12:25:08,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:08,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 12:25:08,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179247481] [2020-09-25 12:25:08,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 12:25:08,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:08,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 12:25:08,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:25:08,368 INFO L87 Difference]: Start difference. First operand 722 states and 845 transitions. Second operand 16 states. [2020-09-25 12:25:10,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:10,993 INFO L93 Difference]: Finished difference Result 1359 states and 1617 transitions. [2020-09-25 12:25:10,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:25:10,994 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 193 [2020-09-25 12:25:10,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:10,999 INFO L225 Difference]: With dead ends: 1359 [2020-09-25 12:25:11,000 INFO L226 Difference]: Without dead ends: 658 [2020-09-25 12:25:11,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:25:11,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-09-25 12:25:11,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 648. [2020-09-25 12:25:11,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2020-09-25 12:25:11,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 709 transitions. [2020-09-25 12:25:11,021 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 709 transitions. Word has length 193 [2020-09-25 12:25:11,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:11,022 INFO L479 AbstractCegarLoop]: Abstraction has 648 states and 709 transitions. [2020-09-25 12:25:11,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 12:25:11,022 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 709 transitions. [2020-09-25 12:25:11,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 12:25:11,026 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:11,026 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:25:11,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:25:11,027 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:11,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:11,027 INFO L82 PathProgramCache]: Analyzing trace with hash -784683625, now seen corresponding path program 1 times [2020-09-25 12:25:11,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:11,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572919836] [2020-09-25 12:25:11,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:11,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:11,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:11,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:11,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:16,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:16,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-25 12:25:16,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:25:16,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:25:16,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:16,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:16,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:25:16,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-25 12:25:16,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 12:25:16,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:25:16,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:16,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:16,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:16,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:16,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:16,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:25:16,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:16,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:16,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:16,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:16,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:16,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:16,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:16,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:16,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:16,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:25:16,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:16,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:25:16,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:16,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:16,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:16,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:16,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:16,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:16,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 12:25:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:16,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:16,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:16,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 12:25:16,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:16,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 12:25:16,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:16,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:16,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:25:16,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:16,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:25:16,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:16,743 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-25 12:25:16,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572919836] [2020-09-25 12:25:16,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:16,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:25:16,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435203152] [2020-09-25 12:25:16,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:25:16,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:16,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:25:16,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:25:16,745 INFO L87 Difference]: Start difference. First operand 648 states and 709 transitions. Second operand 8 states. [2020-09-25 12:25:19,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:19,121 INFO L93 Difference]: Finished difference Result 1533 states and 1687 transitions. [2020-09-25 12:25:19,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 12:25:19,122 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 236 [2020-09-25 12:25:19,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:19,129 INFO L225 Difference]: With dead ends: 1533 [2020-09-25 12:25:19,129 INFO L226 Difference]: Without dead ends: 809 [2020-09-25 12:25:19,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:25:19,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2020-09-25 12:25:19,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 794. [2020-09-25 12:25:19,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-09-25 12:25:19,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 864 transitions. [2020-09-25 12:25:19,162 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 864 transitions. Word has length 236 [2020-09-25 12:25:19,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:19,164 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 864 transitions. [2020-09-25 12:25:19,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:25:19,164 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 864 transitions. [2020-09-25 12:25:19,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-25 12:25:19,168 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:19,169 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, 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] [2020-09-25 12:25:19,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:25:19,169 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:19,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:19,170 INFO L82 PathProgramCache]: Analyzing trace with hash 902720122, now seen corresponding path program 1 times [2020-09-25 12:25:19,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:19,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236715657] [2020-09-25 12:25:19,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:19,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:19,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:19,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:19,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:22,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:22,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:23,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:24,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:24,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:24,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-09-25 12:25:24,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:25:24,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5086 [2020-09-25 12:25:24,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:24,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:24,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 12:25:24,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:25:24,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-09-25 12:25:24,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:24,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:24,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:24,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:24,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:24,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:24,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 12:25:24,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:24,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:24,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:25:24,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:24,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:25:24,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:24,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:24,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:24,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:24,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:25,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:25,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 12:25:25,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:25:25,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-09-25 12:25:25,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:25,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:25,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:25,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:25:25,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 12:25:25,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:25:25,255 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:25:25,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236715657] [2020-09-25 12:25:25,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:25,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 12:25:25,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558366900] [2020-09-25 12:25:25,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 12:25:25,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:25,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 12:25:25,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:25:25,258 INFO L87 Difference]: Start difference. First operand 794 states and 864 transitions. Second operand 13 states. [2020-09-25 12:25:25,812 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-09-25 12:25:29,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:29,808 INFO L93 Difference]: Finished difference Result 2966 states and 3352 transitions. [2020-09-25 12:25:29,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 12:25:29,809 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 242 [2020-09-25 12:25:29,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:29,819 INFO L225 Difference]: With dead ends: 2966 [2020-09-25 12:25:29,819 INFO L226 Difference]: Without dead ends: 2194 [2020-09-25 12:25:29,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2020-09-25 12:25:29,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2194 states.