/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/Problem01_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:22:30,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:22:30,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:22:30,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:22:30,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:22:30,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:22:30,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:22:30,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:22:30,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:22:30,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:22:30,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:22:30,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:22:30,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:22:30,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:22:30,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:22:30,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:22:30,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:22:30,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:22:30,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:22:30,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:22:30,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:22:30,594 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:22:30,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:22:30,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:22:30,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:22:30,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:22:30,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:22:30,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:22:30,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:22:30,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:22:30,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:22:30,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:22:30,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:22:30,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:22:30,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:22:30,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:22:30,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:22:30,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:22:30,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:22:30,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:22:30,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:22:30,610 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 12:22:30,636 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:22:30,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:22:30,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:22:30,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:22:30,638 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:22:30,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:22:30,638 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:22:30,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:22:30,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:22:30,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:22:30,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:22:30,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:22:30,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:22:30,640 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:22:30,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:22:30,640 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:22:30,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:22:30,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:22:30,641 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:22:30,641 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:22:30,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:22:30,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:22:30,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:22:30,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:22:30,642 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:22:30,642 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:22:30,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:22:30,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:22:30,643 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:22:30,643 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 12:22:31,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:22:31,150 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:22:31,155 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:22:31,157 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:22:31,158 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:22:31,159 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label55.c [2020-09-25 12:22:31,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46b1d0b6d/4accd9a575184e48babf78464acb03ca/FLAGa5fe75a6b [2020-09-25 12:22:31,917 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:22:31,918 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label55.c [2020-09-25 12:22:31,949 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46b1d0b6d/4accd9a575184e48babf78464acb03ca/FLAGa5fe75a6b [2020-09-25 12:22:32,140 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46b1d0b6d/4accd9a575184e48babf78464acb03ca [2020-09-25 12:22:32,155 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:22:32,161 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:22:32,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:22:32,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:22:32,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:22:32,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:22:32" (1/1) ... [2020-09-25 12:22:32,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3666d953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:32, skipping insertion in model container [2020-09-25 12:22:32,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:22:32" (1/1) ... [2020-09-25 12:22:32,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:22:32,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:22:32,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:22:32,842 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:22:33,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:22:33,154 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:22:33,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:33 WrapperNode [2020-09-25 12:22:33,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:22:33,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:22:33,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:22:33,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:22:33,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:33" (1/1) ... [2020-09-25 12:22:33,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:33" (1/1) ... [2020-09-25 12:22:33,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:33" (1/1) ... [2020-09-25 12:22:33,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:33" (1/1) ... [2020-09-25 12:22:33,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:33" (1/1) ... [2020-09-25 12:22:33,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:33" (1/1) ... [2020-09-25 12:22:33,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:33" (1/1) ... [2020-09-25 12:22:33,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:22:33,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:22:33,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:22:33,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:22:33,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:33" (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 12:22:33,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:22:33,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:22:33,442 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:22:33,442 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:22:33,442 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:22:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:22:33,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:22:33,444 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:22:33,444 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:22:33,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:22:33,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:22:34,785 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:22:34,786 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:22:34,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:22:34 BoogieIcfgContainer [2020-09-25 12:22:34,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:22:34,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:22:34,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:22:34,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:22:34,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:22:32" (1/3) ... [2020-09-25 12:22:34,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ccd0667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:22:34, skipping insertion in model container [2020-09-25 12:22:34,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:33" (2/3) ... [2020-09-25 12:22:34,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ccd0667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:22:34, skipping insertion in model container [2020-09-25 12:22:34,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:22:34" (3/3) ... [2020-09-25 12:22:34,805 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label55.c [2020-09-25 12:22:34,817 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:22:34,828 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:22:34,851 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:22:34,887 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:22:34,887 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:22:34,887 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:22:34,887 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:22:34,888 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:22:34,888 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:22:34,888 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:22:34,888 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:22:34,921 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 12:22:34,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 12:22:34,943 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:34,945 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] [2020-09-25 12:22:34,945 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:34,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:34,953 INFO L82 PathProgramCache]: Analyzing trace with hash -2144769179, now seen corresponding path program 1 times [2020-09-25 12:22:34,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:34,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472671411] [2020-09-25 12:22:34,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:35,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:35,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:36,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:37,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:39,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:40,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:40,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 12:22:40,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:22:40,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 12:22:40,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:40,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:40,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:22:40,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 12:22:40,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 12:22:40,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:22:40,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:40,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:40,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:40,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:40,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:40,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 12:22:40,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:40,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:40,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:40,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:40,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 12:22:40,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:40,648 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 12:22:40,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472671411] [2020-09-25 12:22:40,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:22:40,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:22:40,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851615471] [2020-09-25 12:22:40,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:22:40,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:40,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:22:40,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:22:40,689 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 12:22:43,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:43,047 INFO L93 Difference]: Finished difference Result 1270 states and 1669 transitions. [2020-09-25 12:22:43,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:22:43,050 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 12:22:43,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:43,076 INFO L225 Difference]: With dead ends: 1270 [2020-09-25 12:22:43,077 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 12:22:43,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 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 12:22:43,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 12:22:43,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 603. [2020-09-25 12:22:43,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 12:22:43,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 731 transitions. [2020-09-25 12:22:43,187 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 731 transitions. Word has length 139 [2020-09-25 12:22:43,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:43,188 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 731 transitions. [2020-09-25 12:22:43,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:22:43,189 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 731 transitions. [2020-09-25 12:22:43,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 12:22:43,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:43,198 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:22:43,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:22:43,199 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:43,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:43,200 INFO L82 PathProgramCache]: Analyzing trace with hash 473875351, now seen corresponding path program 1 times [2020-09-25 12:22:43,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:43,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537567106] [2020-09-25 12:22:43,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:43,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:43,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:43,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:43,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:43,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:45,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:45,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:46,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:46,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:48,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:48,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 12:22:48,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:22:48,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-09-25 12:22:48,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:48,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:48,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:48,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:22:48,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 12:22:48,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:22:48,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:48,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:48,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:48,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:48,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:48,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:22:48,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:48,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:48,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:48,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:48,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:48,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:48,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:48,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:48,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:48,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:22:48,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:48,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 12:22:48,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:48,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:48,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:48,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:48,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:22:48,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:48,526 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:48,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537567106] [2020-09-25 12:22:48,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:48,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:22:48,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141912294] [2020-09-25 12:22:48,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:22:48,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:48,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:22:48,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:22:48,531 INFO L87 Difference]: Start difference. First operand 603 states and 731 transitions. Second operand 5 states. [2020-09-25 12:22:50,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:50,594 INFO L93 Difference]: Finished difference Result 1503 states and 1907 transitions. [2020-09-25 12:22:50,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:22:50,595 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 12:22:50,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:50,602 INFO L225 Difference]: With dead ends: 1503 [2020-09-25 12:22:50,602 INFO L226 Difference]: Without dead ends: 924 [2020-09-25 12:22:50,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 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 12:22:50,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-09-25 12:22:50,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 889. [2020-09-25 12:22:50,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-09-25 12:22:50,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1115 transitions. [2020-09-25 12:22:50,652 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1115 transitions. Word has length 161 [2020-09-25 12:22:50,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:50,653 INFO L479 AbstractCegarLoop]: Abstraction has 889 states and 1115 transitions. [2020-09-25 12:22:50,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:22:50,653 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1115 transitions. [2020-09-25 12:22:50,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 12:22:50,659 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:50,660 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:50,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:22:50,660 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:50,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:50,661 INFO L82 PathProgramCache]: Analyzing trace with hash 911880378, now seen corresponding path program 1 times [2020-09-25 12:22:50,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:50,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285019405] [2020-09-25 12:22:50,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:50,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:50,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:51,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:53,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:54,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:54,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:55,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:55,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 12:22:55,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:22:55,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:22:55,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:55,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:55,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:22:55,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 12:22:55,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 12:22:55,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:55,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:55,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:55,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:55,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:55,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:55,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 12:22:55,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:55,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:55,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:55,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:55,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 12:22:55,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:55,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:55,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:55,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:55,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:55,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:22:55,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:22:55,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 12:22:55,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:55,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:55,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:55,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:22:55,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:22:55,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:55,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 12:22:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:55,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:56,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:56,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:22:56,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:56,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 12:22:56,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:56,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:56,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:56,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:22:56,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:22:56,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:56,171 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 12:22:56,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285019405] [2020-09-25 12:22:56,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:56,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:22:56,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593717955] [2020-09-25 12:22:56,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:22:56,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:56,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:22:56,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:22:56,185 INFO L87 Difference]: Start difference. First operand 889 states and 1115 transitions. Second operand 7 states. [2020-09-25 12:22:58,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:58,576 INFO L93 Difference]: Finished difference Result 2081 states and 2694 transitions. [2020-09-25 12:22:58,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 12:22:58,577 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-09-25 12:22:58,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:58,585 INFO L225 Difference]: With dead ends: 2081 [2020-09-25 12:22:58,585 INFO L226 Difference]: Without dead ends: 1216 [2020-09-25 12:22:58,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:22:58,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2020-09-25 12:22:58,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1183. [2020-09-25 12:22:58,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1183 states. [2020-09-25 12:22:58,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1516 transitions. [2020-09-25 12:22:58,633 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1516 transitions. Word has length 193 [2020-09-25 12:22:58,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:58,633 INFO L479 AbstractCegarLoop]: Abstraction has 1183 states and 1516 transitions. [2020-09-25 12:22:58,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:22:58,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1516 transitions. [2020-09-25 12:22:58,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 12:22:58,641 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:58,641 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:58,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:22:58,642 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:58,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:58,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1927329477, now seen corresponding path program 1 times [2020-09-25 12:22:58,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:58,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419425828] [2020-09-25 12:22:58,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:58,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:58,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:58,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:59,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:02,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:03,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:03,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:03,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-25 12:23:03,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:23:03,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5135 [2020-09-25 12:23:03,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:03,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:03,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 12:23:03,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 12:23:03,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 12:23:03,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:04,476 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-09-25 12:23:04,687 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 47 [2020-09-25 12:23:04,943 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 48 [2020-09-25 12:23:05,180 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 45 [2020-09-25 12:23:05,402 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 41 [2020-09-25 12:23:05,584 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 37 [2020-09-25 12:23:05,748 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 33 [2020-09-25 12:23:05,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:05,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:05,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:05,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:23:05,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:05,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:23:05,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:05,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:05,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:05,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:05,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:05,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:05,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:23:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:05,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:05,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:05,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 12:23:05,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:05,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 12:23:05,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:05,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:05,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:23:05,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:05,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:23:05,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:05,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 12:23:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:05,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:06,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:06,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:23:06,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:06,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-25 12:23:06,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:06,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:06,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:23:06,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:23:06,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:23:06,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:06,505 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 40 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:23:06,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419425828] [2020-09-25 12:23:06,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:06,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 12:23:06,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478721775] [2020-09-25 12:23:06,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 12:23:06,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:06,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 12:23:06,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-09-25 12:23:06,508 INFO L87 Difference]: Start difference. First operand 1183 states and 1516 transitions. Second operand 21 states. [2020-09-25 12:23:07,756 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-09-25 12:23:08,796 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-09-25 12:23:10,987 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2020-09-25 12:23:11,454 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-09-25 12:23:12,702 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 113 [2020-09-25 12:23:13,444 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 110 [2020-09-25 12:23:14,370 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 107 [2020-09-25 12:23:14,826 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 104 [2020-09-25 12:23:16,069 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 99 [2020-09-25 12:23:18,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:18,315 INFO L93 Difference]: Finished difference Result 3106 states and 4059 transitions. [2020-09-25 12:23:18,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 12:23:18,316 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 200 [2020-09-25 12:23:18,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:18,332 INFO L225 Difference]: With dead ends: 3106 [2020-09-25 12:23:18,333 INFO L226 Difference]: Without dead ends: 1947 [2020-09-25 12:23:18,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=507, Invalid=1299, Unknown=0, NotChecked=0, Total=1806 [2020-09-25 12:23:18,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1947 states. [2020-09-25 12:23:18,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1947 to 1714. [2020-09-25 12:23:18,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1714 states. [2020-09-25 12:23:18,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2036 transitions. [2020-09-25 12:23:18,414 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2036 transitions. Word has length 200 [2020-09-25 12:23:18,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:18,415 INFO L479 AbstractCegarLoop]: Abstraction has 1714 states and 2036 transitions. [2020-09-25 12:23:18,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 12:23:18,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2036 transitions. [2020-09-25 12:23:18,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-09-25 12:23:18,427 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:18,427 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:23:18,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:23:18,428 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:18,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:18,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1235326992, now seen corresponding path program 1 times [2020-09-25 12:23:18,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:18,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268345482] [2020-09-25 12:23:18,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:18,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:18,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:18,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:18,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:19,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:19,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:19,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:19,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking...