/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=0.1 --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_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:09:54,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:09:54,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:09:54,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:09:54,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:09:54,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:09:54,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:09:54,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:09:54,194 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:09:54,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:09:54,199 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:09:54,200 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:09:54,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:09:54,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:09:54,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:09:54,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:09:54,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:09:54,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:09:54,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:09:54,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:09:54,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:09:54,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:09:54,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:09:54,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:09:54,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:09:54,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:09:54,237 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:09:54,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:09:54,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:09:54,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:09:54,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:09:54,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:09:54,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:09:54,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:09:54,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:09:54,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:09:54,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:09:54,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:09:54,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:09:54,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:09:54,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:09:54,253 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 10:09:54,305 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:09:54,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:09:54,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:09:54,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:09:54,308 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:09:54,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:09:54,309 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:09:54,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:09:54,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:09:54,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:09:54,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:09:54,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:09:54,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:09:54,312 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:09:54,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:09:54,312 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:09:54,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:09:54,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:09:54,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:09:54,313 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:09:54,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:09:54,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:09:54,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:09:54,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:09:54,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:09:54,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:09:54,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:09:54,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:09:54,315 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:09:54,315 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:09:54,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:09:54,787 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:09:54,793 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:09:54,795 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:09:54,795 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:09:54,797 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label40.c [2020-09-25 10:09:54,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ae9790ad/a9071ac6c6d14e5b9ef436c92b88f7b5/FLAG5e8ea0c0e [2020-09-25 10:09:55,549 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:09:55,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label40.c [2020-09-25 10:09:55,569 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ae9790ad/a9071ac6c6d14e5b9ef436c92b88f7b5/FLAG5e8ea0c0e [2020-09-25 10:09:55,789 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ae9790ad/a9071ac6c6d14e5b9ef436c92b88f7b5 [2020-09-25 10:09:55,803 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:09:55,812 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:09:55,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:09:55,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:09:55,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:09:55,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:09:55" (1/1) ... [2020-09-25 10:09:55,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112bbb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:55, skipping insertion in model container [2020-09-25 10:09:55,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:09:55" (1/1) ... [2020-09-25 10:09:55,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:09:55,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:09:56,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:09:56,343 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:09:56,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:09:56,612 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:09:56,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56 WrapperNode [2020-09-25 10:09:56,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:09:56,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:09:56,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:09:56,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:09:56,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56" (1/1) ... [2020-09-25 10:09:56,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56" (1/1) ... [2020-09-25 10:09:56,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56" (1/1) ... [2020-09-25 10:09:56,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56" (1/1) ... [2020-09-25 10:09:56,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56" (1/1) ... [2020-09-25 10:09:56,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56" (1/1) ... [2020-09-25 10:09:56,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56" (1/1) ... [2020-09-25 10:09:56,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:09:56,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:09:56,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:09:56,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:09:56,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56" (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 10:09:56,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:09:56,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:09:56,842 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:09:56,842 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:09:56,843 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:09:56,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:09:56,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:09:56,844 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:09:56,845 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:09:56,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:09:56,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:09:58,283 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:09:58,284 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:09:58,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:09:58 BoogieIcfgContainer [2020-09-25 10:09:58,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:09:58,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:09:58,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:09:58,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:09:58,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:09:55" (1/3) ... [2020-09-25 10:09:58,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2566a626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:09:58, skipping insertion in model container [2020-09-25 10:09:58,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56" (2/3) ... [2020-09-25 10:09:58,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2566a626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:09:58, skipping insertion in model container [2020-09-25 10:09:58,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:09:58" (3/3) ... [2020-09-25 10:09:58,314 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label40.c [2020-09-25 10:09:58,326 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:09:58,342 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:09:58,366 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:09:58,409 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:09:58,410 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:09:58,410 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:09:58,410 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:09:58,411 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:09:58,411 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:09:58,411 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:09:58,411 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:09:58,459 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:09:58,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-09-25 10:09:58,479 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:58,480 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] [2020-09-25 10:09:58,481 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:58,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:58,489 INFO L82 PathProgramCache]: Analyzing trace with hash 632775426, now seen corresponding path program 1 times [2020-09-25 10:09:58,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:58,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142353674] [2020-09-25 10:09:58,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:58,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:59,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:59,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:02,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:02,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:03,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:03,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-25 10:10:03,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:10:03,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 10:10:03,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:03,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:03,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:10:03,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:10:03,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 10:10:03,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 10:10:03,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:04,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:04,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:04,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:04,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:04,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 10:10:04,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:04,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:04,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:04,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:04,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:10:04,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:10:04,113 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 10:10:04,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142353674] [2020-09-25 10:10:04,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:10:04,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:10:04,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955217360] [2020-09-25 10:10:04,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:10:04,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:04,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:10:04,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:10:04,149 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 10:10:06,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:06,634 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 10:10:06,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:10:06,636 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-09-25 10:10:06,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:06,664 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 10:10:06,664 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 10:10:06,676 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 10:10:06,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 10:10:06,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 10:10:06,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 10:10:06,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 10:10:06,807 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 115 [2020-09-25 10:10:06,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:06,808 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 10:10:06,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:10:06,808 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 10:10:06,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 10:10:06,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:06,821 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:10:06,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:10:06,822 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:06,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:06,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1507069906, now seen corresponding path program 1 times [2020-09-25 10:10:06,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:06,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803295756] [2020-09-25 10:10:06,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:06,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:06,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:07,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:08,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:08,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:09,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:09,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:11,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:11,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 10:10:11,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:10:11,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 10:10:11,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:11,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:11,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:11,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 10:10:11,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 10:10:11,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:12,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:12,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:12,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:12,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:12,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:12,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:10:12,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:12,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:12,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:12,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:12,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:12,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:12,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:12,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:12,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:12,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:10:12,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:12,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 10:10:12,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:12,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:12,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:12,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:12,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 10:10:12,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:12,115 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:10:12,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803295756] [2020-09-25 10:10:12,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:12,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:10:12,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779256227] [2020-09-25 10:10:12,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:10:12,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:12,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:10:12,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:10:12,119 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 6 states. [2020-09-25 10:10:15,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:15,239 INFO L93 Difference]: Finished difference Result 2164 states and 2805 transitions. [2020-09-25 10:10:15,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:10:15,240 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2020-09-25 10:10:15,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:15,251 INFO L225 Difference]: With dead ends: 2164 [2020-09-25 10:10:15,252 INFO L226 Difference]: Without dead ends: 1453 [2020-09-25 10:10:15,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:10:15,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2020-09-25 10:10:15,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1344. [2020-09-25 10:10:15,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1344 states. [2020-09-25 10:10:15,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 1744 transitions. [2020-09-25 10:10:15,333 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 1744 transitions. Word has length 133 [2020-09-25 10:10:15,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:15,334 INFO L479 AbstractCegarLoop]: Abstraction has 1344 states and 1744 transitions. [2020-09-25 10:10:15,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:10:15,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 1744 transitions. [2020-09-25 10:10:15,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 10:10:15,351 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:15,352 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:15,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:10:15,352 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:15,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:15,353 INFO L82 PathProgramCache]: Analyzing trace with hash -2051843805, now seen corresponding path program 1 times [2020-09-25 10:10:15,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:15,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19943821] [2020-09-25 10:10:15,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:15,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:15,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:16,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:16,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:19,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:19,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 10:10:19,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:10:19,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4447 [2020-09-25 10:10:19,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:19,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:19,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:19,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 10:10:19,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 10:10:19,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:20,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:20,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:20,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:20,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:20,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:20,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 10:10:20,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:20,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:20,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:20,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:20,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:20,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:20,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:20,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:20,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:20,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:10:20,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:20,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:10:20,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:20,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:20,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:20,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:20,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:10:20,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:20,165 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:10:20,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19943821] [2020-09-25 10:10:20,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:20,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:10:20,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214887140] [2020-09-25 10:10:20,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:10:20,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:20,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:10:20,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:10:20,171 INFO L87 Difference]: Start difference. First operand 1344 states and 1744 transitions. Second operand 5 states. [2020-09-25 10:10:22,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:22,294 INFO L93 Difference]: Finished difference Result 3619 states and 4959 transitions. [2020-09-25 10:10:22,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:10:22,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 10:10:22,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:22,309 INFO L225 Difference]: With dead ends: 3619 [2020-09-25 10:10:22,310 INFO L226 Difference]: Without dead ends: 2297 [2020-09-25 10:10:22,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:10:22,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2020-09-25 10:10:22,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 1957. [2020-09-25 10:10:22,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2020-09-25 10:10:22,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 2508 transitions. [2020-09-25 10:10:22,393 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 2508 transitions. Word has length 139 [2020-09-25 10:10:22,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:22,393 INFO L479 AbstractCegarLoop]: Abstraction has 1957 states and 2508 transitions. [2020-09-25 10:10:22,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:10:22,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 2508 transitions. [2020-09-25 10:10:22,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 10:10:22,403 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:22,403 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:10:22,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:10:22,404 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:22,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:22,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1993339391, now seen corresponding path program 1 times [2020-09-25 10:10:22,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:22,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644125042] [2020-09-25 10:10:22,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:22,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:22,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:22,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:22,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:27,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:27,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 10:10:27,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:10:27,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 10:10:27,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:27,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:27,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 10:10:27,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-25 10:10:27,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 10:10:27,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:27,962 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-09-25 10:10:28,163 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40 [2020-09-25 10:10:28,320 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2020-09-25 10:10:28,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:28,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:28,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:28,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:28,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:28,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 10:10:28,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:28,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:28,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:28,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:28,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:28,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:28,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:28,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:28,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:28,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:10:28,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:28,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:10:28,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:28,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:28,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:28,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:28,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:28,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:28,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 10:10:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:28,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:28,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:28,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 10:10:28,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:28,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 10:10:28,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:28,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:28,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:10:28,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:28,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:10:28,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:28,976 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 10:10:28,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644125042] [2020-09-25 10:10:28,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:28,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:10:28,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699785802] [2020-09-25 10:10:28,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:10:28,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:28,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:10:28,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:10:28,979 INFO L87 Difference]: Start difference. First operand 1957 states and 2508 transitions. Second operand 13 states. [2020-09-25 10:10:30,074 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 104 [2020-09-25 10:10:30,513 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-25 10:10:31,020 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2020-09-25 10:10:31,650 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-25 10:10:32,324 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-09-25 10:10:32,500 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-09-25 10:10:32,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:32,913 INFO L93 Difference]: Finished difference Result 4001 states and 5236 transitions. [2020-09-25 10:10:32,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:10:32,915 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-09-25 10:10:32,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:32,928 INFO L225 Difference]: With dead ends: 4001 [2020-09-25 10:10:32,928 INFO L226 Difference]: Without dead ends: 2066 [2020-09-25 10:10:32,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:10:32,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2020-09-25 10:10:32,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 2017. [2020-09-25 10:10:32,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2017 states. [2020-09-25 10:10:33,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2017 states to 2017 states and 2574 transitions. [2020-09-25 10:10:33,005 INFO L78 Accepts]: Start accepts. Automaton has 2017 states and 2574 transitions. Word has length 152 [2020-09-25 10:10:33,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:33,007 INFO L479 AbstractCegarLoop]: Abstraction has 2017 states and 2574 transitions. [2020-09-25 10:10:33,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:10:33,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2017 states and 2574 transitions. [2020-09-25 10:10:33,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 10:10:33,016 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:33,016 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:10:33,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:10:33,017 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:33,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:33,017 INFO L82 PathProgramCache]: Analyzing trace with hash 261324474, now seen corresponding path program 1 times [2020-09-25 10:10:33,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:33,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797793731] [2020-09-25 10:10:33,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:33,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:33,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:33,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:34,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:34,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:37,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:37,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 10:10:37,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:10:37,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4743 [2020-09-25 10:10:37,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:37,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:37,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:10:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:10:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 10:10:37,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:10:37,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:37,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:38,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:38,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:38,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:38,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:10:38,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:38,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:38,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:38,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:38,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:10:38,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:38,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:38,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:38,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:38,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:38,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:10:38,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:38,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 10:10:38,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:38,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:38,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:10:38,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:38,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:10:38,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:38,378 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:10:38,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797793731] [2020-09-25 10:10:38,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:38,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:10:38,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571064776] [2020-09-25 10:10:38,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:10:38,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:38,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:10:38,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:10:38,381 INFO L87 Difference]: Start difference. First operand 2017 states and 2574 transitions. Second operand 11 states. [2020-09-25 10:10:42,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:42,231 INFO L93 Difference]: Finished difference Result 5512 states and 7369 transitions. [2020-09-25 10:10:42,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:10:42,232 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 153 [2020-09-25 10:10:42,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:42,243 INFO L225 Difference]: With dead ends: 5512 [2020-09-25 10:10:42,244 INFO L226 Difference]: Without dead ends: 1984 [2020-09-25 10:10:42,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:10:42,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2020-09-25 10:10:42,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1944. [2020-09-25 10:10:42,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1944 states. [2020-09-25 10:10:42,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 2411 transitions. [2020-09-25 10:10:42,307 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 2411 transitions. Word has length 153 [2020-09-25 10:10:42,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:42,307 INFO L479 AbstractCegarLoop]: Abstraction has 1944 states and 2411 transitions. [2020-09-25 10:10:42,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:10:42,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 2411 transitions. [2020-09-25 10:10:42,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 10:10:42,315 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:42,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:10:42,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:10:42,316 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:42,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:42,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1166216736, now seen corresponding path program 1 times [2020-09-25 10:10:42,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:42,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217046237] [2020-09-25 10:10:42,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:42,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:42,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:42,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:43,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking...