/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 SequenceOfStatements --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:10:14,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:10:14,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:10:14,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:10:14,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:10:14,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:10:14,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:10:14,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:10:14,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:10:14,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:10:14,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:10:14,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:10:14,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:10:14,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:10:14,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:10:14,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:10:14,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:10:14,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:10:14,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:10:14,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:10:14,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:10:14,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:10:14,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:10:14,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:10:14,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:10:14,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:10:14,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:10:14,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:10:14,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:10:14,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:10:14,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:10:14,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:10:14,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:10:14,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:10:14,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:10:14,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:10:14,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:10:14,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:10:14,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:10:14,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:10:14,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:10:14,572 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 [2020-10-13 09:10:14,630 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:10:14,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:10:14,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:10:14,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:10:14,636 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:10:14,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:10:14,637 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:10:14,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:10:14,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:10:14,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:10:14,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:10:14,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:10:14,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:10:14,640 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:10:14,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:10:14,640 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:10:14,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:10:14,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:10:14,641 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:10:14,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:10:14,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:10:14,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:10:14,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:10:14,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:10:14,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:10:14,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:10:14,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:10:14,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:10:14,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:10:14,645 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 -> SequenceOfStatements 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:10:14,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:10:14,979 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:10:14,983 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:10:14,985 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:10:14,985 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:10:14,986 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label52.c [2020-10-13 09:10:15,063 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e290f9cf/b415e2aef20a42e9939b270aaa5f2eec/FLAG6ec29ccb1 [2020-10-13 09:10:15,786 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:10:15,787 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label52.c [2020-10-13 09:10:15,810 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e290f9cf/b415e2aef20a42e9939b270aaa5f2eec/FLAG6ec29ccb1 [2020-10-13 09:10:15,948 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e290f9cf/b415e2aef20a42e9939b270aaa5f2eec [2020-10-13 09:10:15,962 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:10:15,964 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:10:15,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:10:15,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:10:15,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:10:15,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:10:15" (1/1) ... [2020-10-13 09:10:15,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5253b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:15, skipping insertion in model container [2020-10-13 09:10:15,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:10:15" (1/1) ... [2020-10-13 09:10:15,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:10:16,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:10:17,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:10:17,129 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:10:17,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:10:17,563 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:10:17,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:17 WrapperNode [2020-10-13 09:10:17,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:10:17,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:10:17,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:10:17,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:10:17,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:17" (1/1) ... [2020-10-13 09:10:17,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:17" (1/1) ... [2020-10-13 09:10:17,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:17" (1/1) ... [2020-10-13 09:10:17,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:17" (1/1) ... [2020-10-13 09:10:17,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:17" (1/1) ... [2020-10-13 09:10:17,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:17" (1/1) ... [2020-10-13 09:10:17,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:17" (1/1) ... [2020-10-13 09:10:17,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:10:17,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:10:17,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:10:17,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:10:17,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:17" (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 [2020-10-13 09:10:17,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:10:17,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:10:17,882 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:10:17,882 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:10:17,882 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:10:17,882 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:10:17,883 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:10:17,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:10:17,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:10:17,883 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:10:17,883 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:10:17,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:10:17,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:10:24,214 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:10:24,215 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:10:24,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:10:24 BoogieIcfgContainer [2020-10-13 09:10:24,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:10:24,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:10:24,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:10:24,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:10:24,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:10:15" (1/3) ... [2020-10-13 09:10:24,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a73c154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:10:24, skipping insertion in model container [2020-10-13 09:10:24,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:17" (2/3) ... [2020-10-13 09:10:24,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a73c154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:10:24, skipping insertion in model container [2020-10-13 09:10:24,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:10:24" (3/3) ... [2020-10-13 09:10:24,233 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label52.c [2020-10-13 09:10:24,248 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:10:24,260 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:10:24,282 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:10:24,316 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:10:24,316 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:10:24,316 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:10:24,316 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:10:24,317 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:10:24,317 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:10:24,317 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:10:24,317 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:10:24,347 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-13 09:10:24,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-13 09:10:24,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:10:24,357 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] [2020-10-13 09:10:24,358 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:10:24,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:10:24,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1937912579, now seen corresponding path program 1 times [2020-10-13 09:10:24,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:10:24,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165782292] [2020-10-13 09:10:24,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:10:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:24,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:25,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:25,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 09:10:25,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:25,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-10-13 09:10:25,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:25,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:10:25,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:10:25,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 09:10:25,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-13 09:10:25,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:10:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:25,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:25,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:25,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:10:25,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:25,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:10:25,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:25,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:10:25,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:25,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:10:25,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:25,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:10:25,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165782292] [2020-10-13 09:10:25,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:10:25,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:10:25,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003394441] [2020-10-13 09:10:25,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:10:25,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:10:25,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:10:25,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:10:25,325 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-13 09:10:32,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:10:32,160 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-13 09:10:32,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:10:32,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-13 09:10:32,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:10:32,191 INFO L225 Difference]: With dead ends: 1199 [2020-10-13 09:10:32,192 INFO L226 Difference]: Without dead ends: 697 [2020-10-13 09:10:32,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:10:32,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-13 09:10:32,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-13 09:10:32,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-13 09:10:32,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-13 09:10:32,337 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 45 [2020-10-13 09:10:32,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:10:32,338 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-13 09:10:32,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:10:32,338 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-13 09:10:32,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 09:10:32,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:10:32,345 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:10:32,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:10:32,346 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:10:32,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:10:32,346 INFO L82 PathProgramCache]: Analyzing trace with hash -954169670, now seen corresponding path program 1 times [2020-10-13 09:10:32,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:10:32,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095203102] [2020-10-13 09:10:32,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:10:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:32,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:32,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:34,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:34,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:10:34,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:10:34,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1645 [2020-10-13 09:10:34,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:34,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:10:34,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 09:10:34,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 09:10:34,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:10:34,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:10:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:34,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:34,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:34,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:10:34,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:34,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:10:34,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:34,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:34,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:34,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:34,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 09:10:34,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:10:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:34,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:34,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:34,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:10:34,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:34,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 09:10:34,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:34,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:10:34,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:34,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:10:34,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:10:34,449 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:10:34,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095203102] [2020-10-13 09:10:34,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:10:34,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:10:34,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341065380] [2020-10-13 09:10:34,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:10:34,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:10:34,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:10:34,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:10:34,454 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 6 states. [2020-10-13 09:10:44,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:10:44,922 INFO L93 Difference]: Finished difference Result 2635 states and 3904 transitions. [2020-10-13 09:10:44,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:10:44,927 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2020-10-13 09:10:44,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:10:44,941 INFO L225 Difference]: With dead ends: 2635 [2020-10-13 09:10:44,941 INFO L226 Difference]: Without dead ends: 1950 [2020-10-13 09:10:44,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:10:44,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2020-10-13 09:10:45,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1944. [2020-10-13 09:10:45,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1944 states. [2020-10-13 09:10:45,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 2601 transitions. [2020-10-13 09:10:45,046 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 2601 transitions. Word has length 114 [2020-10-13 09:10:45,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:10:45,048 INFO L479 AbstractCegarLoop]: Abstraction has 1944 states and 2601 transitions. [2020-10-13 09:10:45,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:10:45,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 2601 transitions. [2020-10-13 09:10:45,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-13 09:10:45,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:10:45,067 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:10:45,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:10:45,067 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:10:45,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:10:45,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1815324654, now seen corresponding path program 1 times [2020-10-13 09:10:45,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:10:45,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008193989] [2020-10-13 09:10:45,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:10:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:45,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:45,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:45,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:46,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:46,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:47,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:49,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:50,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:50,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-13 09:10:50,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 09:10:50,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5168 [2020-10-13 09:10:50,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:50,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:10:50,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 262 [2020-10-13 09:10:50,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:10:50,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:50,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:10:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:50,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:50,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:50,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:10:50,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:50,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:10:50,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:50,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:50,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:50,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:50,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:10:50,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:10:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:50,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:50,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:50,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:10:50,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:50,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:10:50,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:50,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:50,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:50,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:50,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:50,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 09:10:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:50,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:50,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:50,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 09:10:50,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:50,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-13 09:10:50,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:50,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:10:50,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-13 09:10:50,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:10:50,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:10:51,081 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-13 09:10:51,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008193989] [2020-10-13 09:10:51,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:10:51,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 09:10:51,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000848453] [2020-10-13 09:10:51,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:10:51,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:10:51,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:10:51,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:10:51,089 INFO L87 Difference]: Start difference. First operand 1944 states and 2601 transitions. Second operand 5 states. [2020-10-13 09:10:59,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:10:59,952 INFO L93 Difference]: Finished difference Result 4812 states and 6463 transitions. [2020-10-13 09:10:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:10:59,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 297 [2020-10-13 09:10:59,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:10:59,974 INFO L225 Difference]: With dead ends: 4812 [2020-10-13 09:10:59,974 INFO L226 Difference]: Without dead ends: 2874 [2020-10-13 09:10:59,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:10:59,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2020-10-13 09:11:00,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 2563. [2020-10-13 09:11:00,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2563 states. [2020-10-13 09:11:00,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 3484 transitions. [2020-10-13 09:11:00,079 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 3484 transitions. Word has length 297 [2020-10-13 09:11:00,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:11:00,080 INFO L479 AbstractCegarLoop]: Abstraction has 2563 states and 3484 transitions. [2020-10-13 09:11:00,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:11:00,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 3484 transitions. [2020-10-13 09:11:00,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-13 09:11:00,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:11:00,088 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:11:00,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:11:00,088 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:11:00,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:11:00,089 INFO L82 PathProgramCache]: Analyzing trace with hash -320030006, now seen corresponding path program 1 times [2020-10-13 09:11:00,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:11:00,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000981543] [2020-10-13 09:11:00,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:11:00,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:00,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:00,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:00,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:01,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:01,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:05,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:05,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:05,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-13 09:11:05,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:11:05,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-13 09:11:05,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:05,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:05,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:11:05,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:11:05,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:05,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:11:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:05,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:05,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:05,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:11:05,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:05,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:11:05,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:05,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:05,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:05,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:05,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:05,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:11:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:05,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:05,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:05,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:11:05,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:05,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 09:11:05,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:05,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:11:05,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:05,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:11:05,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:05,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 09:11:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:05,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:05,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:05,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:05,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:11:05,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:11:05,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-13 09:11:05,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:05,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:05,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:11:05,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:11:05,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:11:05,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-13 09:11:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:05,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:06,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:06,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:11:06,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:06,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 09:11:06,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:06,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:06,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 09:11:06,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:06,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:11:06,225 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 194 proven. 78 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-13 09:11:06,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000981543] [2020-10-13 09:11:06,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:11:06,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:11:06,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767759473] [2020-10-13 09:11:06,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:11:06,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:11:06,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:11:06,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:11:06,236 INFO L87 Difference]: Start difference. First operand 2563 states and 3484 transitions. Second operand 7 states. [2020-10-13 09:11:13,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:11:13,133 INFO L93 Difference]: Finished difference Result 5286 states and 7461 transitions. [2020-10-13 09:11:13,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:11:13,135 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 299 [2020-10-13 09:11:13,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:11:13,160 INFO L225 Difference]: With dead ends: 5286 [2020-10-13 09:11:13,160 INFO L226 Difference]: Without dead ends: 2679 [2020-10-13 09:11:13,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:11:13,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2679 states. [2020-10-13 09:11:13,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2679 to 2586. [2020-10-13 09:11:13,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2586 states. [2020-10-13 09:11:13,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2586 states to 2586 states and 3495 transitions. [2020-10-13 09:11:13,297 INFO L78 Accepts]: Start accepts. Automaton has 2586 states and 3495 transitions. Word has length 299 [2020-10-13 09:11:13,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:11:13,298 INFO L479 AbstractCegarLoop]: Abstraction has 2586 states and 3495 transitions. [2020-10-13 09:11:13,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:11:13,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2586 states and 3495 transitions. [2020-10-13 09:11:13,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-13 09:11:13,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:11:13,307 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:11:13,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:11:13,308 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:11:13,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:11:13,308 INFO L82 PathProgramCache]: Analyzing trace with hash -816487084, now seen corresponding path program 1 times [2020-10-13 09:11:13,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:11:13,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413347616] [2020-10-13 09:11:13,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:11:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:13,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:13,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:15,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:18,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:18,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-13 09:11:18,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:11:18,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-13 09:11:18,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:18,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:18,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 292 [2020-10-13 09:11:18,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 09:11:18,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:18,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:11:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:18,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:18,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:18,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:11:18,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:18,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:11:18,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:18,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:18,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:18,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:18,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:11:18,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:11:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:18,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:18,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:18,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:11:18,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:18,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 09:11:18,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:18,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:18,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:18,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:18,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:11:18,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:11:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:19,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:19,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:19,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:11:19,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:19,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 09:11:19,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:19,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:11:19,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:19,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:11:19,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:19,224 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-13 09:11:19,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413347616] [2020-10-13 09:11:19,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:11:19,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:11:19,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443023997] [2020-10-13 09:11:19,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:11:19,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:11:19,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:11:19,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:11:19,229 INFO L87 Difference]: Start difference. First operand 2586 states and 3495 transitions. Second operand 5 states. [2020-10-13 09:11:28,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:11:28,466 INFO L93 Difference]: Finished difference Result 6111 states and 8505 transitions. [2020-10-13 09:11:28,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:11:28,468 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 325 [2020-10-13 09:11:28,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:11:28,491 INFO L225 Difference]: With dead ends: 6111 [2020-10-13 09:11:28,492 INFO L226 Difference]: Without dead ends: 3531 [2020-10-13 09:11:28,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:11:28,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3531 states. [2020-10-13 09:11:28,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3531 to 3527. [2020-10-13 09:11:28,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3527 states. [2020-10-13 09:11:28,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3527 states to 3527 states and 4601 transitions. [2020-10-13 09:11:28,624 INFO L78 Accepts]: Start accepts. Automaton has 3527 states and 4601 transitions. Word has length 325 [2020-10-13 09:11:28,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:11:28,625 INFO L479 AbstractCegarLoop]: Abstraction has 3527 states and 4601 transitions. [2020-10-13 09:11:28,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:11:28,626 INFO L276 IsEmpty]: Start isEmpty. Operand 3527 states and 4601 transitions. [2020-10-13 09:11:28,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2020-10-13 09:11:28,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:11:28,639 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:11:28,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:11:28,640 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:11:28,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:11:28,640 INFO L82 PathProgramCache]: Analyzing trace with hash 449326123, now seen corresponding path program 1 times [2020-10-13 09:11:28,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:11:28,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447682528] [2020-10-13 09:11:28,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:11:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:28,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:29,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:29,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:29,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:31,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:31,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:33,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:33,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 435 [2020-10-13 09:11:33,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:11:33,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 09:11:33,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-13 09:11:33,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 09:11:33,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:11:33,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:11:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:33,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:33,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:33,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:11:33,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:33,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 09:11:33,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:33,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:33,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:33,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:33,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:11:33,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:11:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:33,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:34,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:34,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:11:34,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:34,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 09:11:34,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:34,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:34,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:34,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:34,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:34,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-13 09:11:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:34,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:34,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:34,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:11:34,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:34,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 09:11:34,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:34,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:11:34,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:34,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 09:11:34,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:11:34,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-10-13 09:11:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:34,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:34,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:34,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:34,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 09:11:34,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:11:34,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-10-13 09:11:34,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:34,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:34,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:11:34,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-13 09:11:34,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:11:36,034 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 327 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-13 09:11:36,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447682528] [2020-10-13 09:11:36,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:11:36,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:11:36,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781065401] [2020-10-13 09:11:36,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:11:36,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:11:36,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:11:36,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:11:36,038 INFO L87 Difference]: Start difference. First operand 3527 states and 4601 transitions. Second operand 6 states. [2020-10-13 09:11:44,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:11:44,028 INFO L93 Difference]: Finished difference Result 7091 states and 9260 transitions. [2020-10-13 09:11:44,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:11:44,030 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 421 [2020-10-13 09:11:44,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:11:44,058 INFO L225 Difference]: With dead ends: 7091 [2020-10-13 09:11:44,058 INFO L226 Difference]: Without dead ends: 3549 [2020-10-13 09:11:44,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 09:11:44,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3549 states. [2020-10-13 09:11:44,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3549 to 3527. [2020-10-13 09:11:44,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3527 states. [2020-10-13 09:11:44,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3527 states to 3527 states and 4594 transitions. [2020-10-13 09:11:44,210 INFO L78 Accepts]: Start accepts. Automaton has 3527 states and 4594 transitions. Word has length 421 [2020-10-13 09:11:44,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:11:44,211 INFO L479 AbstractCegarLoop]: Abstraction has 3527 states and 4594 transitions. [2020-10-13 09:11:44,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:11:44,212 INFO L276 IsEmpty]: Start isEmpty. Operand 3527 states and 4594 transitions. [2020-10-13 09:11:44,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-10-13 09:11:44,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:11:44,227 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:11:44,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:11:44,227 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:11:44,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:11:44,228 INFO L82 PathProgramCache]: Analyzing trace with hash 395098477, now seen corresponding path program 1 times [2020-10-13 09:11:44,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:11:44,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468391386] [2020-10-13 09:11:44,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:11:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:44,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:44,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:44,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:47,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:49,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:49,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 443 [2020-10-13 09:11:49,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:11:49,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 09:11:49,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:49,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:49,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-13 09:11:49,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 09:11:49,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:11:49,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:11:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:49,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:49,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:49,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:11:49,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:49,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:11:49,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:49,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:49,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:49,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:49,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:11:49,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:11:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:49,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:49,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:49,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:11:49,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:49,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 09:11:49,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:49,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:49,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:49,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:49,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:11:49,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-13 09:11:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:49,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:50,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:50,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:11:50,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:50,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-13 09:11:50,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:50,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:11:50,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:50,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 09:11:50,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:11:50,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-13 09:11:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:50,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:50,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:50,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 09:11:50,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:50,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-13 09:11:50,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:50,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:50,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:11:50,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 09:11:50,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:11:50,591 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 307 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-13 09:11:50,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468391386] [2020-10-13 09:11:50,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:11:50,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:11:50,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332977464] [2020-10-13 09:11:50,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:11:50,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:11:50,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:11:50,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:11:50,596 INFO L87 Difference]: Start difference. First operand 3527 states and 4594 transitions. Second operand 7 states. [2020-10-13 09:12:04,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:12:04,350 INFO L93 Difference]: Finished difference Result 8083 states and 10772 transitions. [2020-10-13 09:12:04,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:12:04,352 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 429 [2020-10-13 09:12:04,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:12:04,381 INFO L225 Difference]: With dead ends: 8083 [2020-10-13 09:12:04,381 INFO L226 Difference]: Without dead ends: 4562 [2020-10-13 09:12:04,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:12:04,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4562 states. [2020-10-13 09:12:04,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4562 to 4213. [2020-10-13 09:12:04,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4213 states. [2020-10-13 09:12:04,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4213 states to 4213 states and 5372 transitions. [2020-10-13 09:12:04,548 INFO L78 Accepts]: Start accepts. Automaton has 4213 states and 5372 transitions. Word has length 429 [2020-10-13 09:12:04,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:12:04,550 INFO L479 AbstractCegarLoop]: Abstraction has 4213 states and 5372 transitions. [2020-10-13 09:12:04,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:12:04,550 INFO L276 IsEmpty]: Start isEmpty. Operand 4213 states and 5372 transitions. [2020-10-13 09:12:04,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2020-10-13 09:12:04,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:12:04,568 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:12:04,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:12:04,569 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:12:04,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:12:04,570 INFO L82 PathProgramCache]: Analyzing trace with hash -24341420, now seen corresponding path program 1 times [2020-10-13 09:12:04,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:12:04,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016125583] [2020-10-13 09:12:04,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:12:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:04,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:04,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:06,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:07,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:09,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:09,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 454 [2020-10-13 09:12:09,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:12:09,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 09:12:09,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:09,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:12:09,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-13 09:12:09,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 09:12:09,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:09,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:12:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:09,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:09,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:09,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:12:09,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:09,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:12:09,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:09,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:09,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:09,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:09,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:12:09,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:12:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:09,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:10,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:10,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:12:10,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:10,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 09:12:10,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:10,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:10,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:10,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:10,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:10,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:12:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:10,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:10,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:10,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:12:10,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:10,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 09:12:10,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:10,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:10,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:10,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:10,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:12:10,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-13 09:12:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:10,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:10,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:10,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:12:10,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:10,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-13 09:12:10,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:10,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:12:10,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:10,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 09:12:10,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:12:10,836 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 117 proven. 3 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-13 09:12:10,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016125583] [2020-10-13 09:12:10,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:12:10,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:12:10,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261906156] [2020-10-13 09:12:10,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:12:10,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:12:10,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:12:10,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:12:10,839 INFO L87 Difference]: Start difference. First operand 4213 states and 5372 transitions. Second operand 5 states. [2020-10-13 09:12:19,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:12:19,601 INFO L93 Difference]: Finished difference Result 8448 states and 10820 transitions. [2020-10-13 09:12:19,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:12:19,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 440 [2020-10-13 09:12:19,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:12:19,624 INFO L225 Difference]: With dead ends: 8448 [2020-10-13 09:12:19,625 INFO L226 Difference]: Without dead ends: 4217 [2020-10-13 09:12:19,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:12:19,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4217 states. [2020-10-13 09:12:19,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4217 to 4211. [2020-10-13 09:12:19,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4211 states. [2020-10-13 09:12:19,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4211 states to 4211 states and 5367 transitions. [2020-10-13 09:12:19,765 INFO L78 Accepts]: Start accepts. Automaton has 4211 states and 5367 transitions. Word has length 440 [2020-10-13 09:12:19,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:12:19,766 INFO L479 AbstractCegarLoop]: Abstraction has 4211 states and 5367 transitions. [2020-10-13 09:12:19,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:12:19,766 INFO L276 IsEmpty]: Start isEmpty. Operand 4211 states and 5367 transitions. [2020-10-13 09:12:19,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2020-10-13 09:12:19,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:12:19,783 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:12:19,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:12:19,784 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:12:19,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:12:19,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1707082620, now seen corresponding path program 1 times [2020-10-13 09:12:19,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:12:19,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491433822] [2020-10-13 09:12:19,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:12:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:19,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:20,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:20,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:20,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:24,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:24,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:24,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 454 [2020-10-13 09:12:24,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:12:24,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 09:12:24,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:24,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:12:24,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 308 [2020-10-13 09:12:24,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 09:12:24,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:25,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:12:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:25,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:25,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:25,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:12:25,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:25,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:12:25,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:25,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:25,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:25,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:25,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:25,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:12:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:25,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:25,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:25,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:12:25,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:25,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 09:12:25,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:25,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:25,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:25,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:25,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:25,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:12:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:25,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:25,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:25,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 09:12:25,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:25,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 09:12:25,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:25,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:12:25,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:25,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 09:12:25,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:25,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-10-13 09:12:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:25,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:25,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:25,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:25,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 09:12:25,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:12:25,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-13 09:12:25,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:25,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:12:25,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:12:25,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 09:12:25,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:26,287 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 306 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-13 09:12:26,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491433822] [2020-10-13 09:12:26,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:12:26,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:12:26,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641121910] [2020-10-13 09:12:26,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:12:26,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:12:26,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:12:26,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:12:26,290 INFO L87 Difference]: Start difference. First operand 4211 states and 5367 transitions. Second operand 7 states. [2020-10-13 09:12:35,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:12:35,491 INFO L93 Difference]: Finished difference Result 8477 states and 10846 transitions. [2020-10-13 09:12:35,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:12:35,493 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 440 [2020-10-13 09:12:35,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:12:35,510 INFO L225 Difference]: With dead ends: 8477 [2020-10-13 09:12:35,511 INFO L226 Difference]: Without dead ends: 4243 [2020-10-13 09:12:35,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:12:35,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4243 states. [2020-10-13 09:12:35,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4243 to 4209. [2020-10-13 09:12:35,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4209 states. [2020-10-13 09:12:35,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4209 states to 4209 states and 5358 transitions. [2020-10-13 09:12:35,618 INFO L78 Accepts]: Start accepts. Automaton has 4209 states and 5358 transitions. Word has length 440 [2020-10-13 09:12:35,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:12:35,619 INFO L479 AbstractCegarLoop]: Abstraction has 4209 states and 5358 transitions. [2020-10-13 09:12:35,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:12:35,619 INFO L276 IsEmpty]: Start isEmpty. Operand 4209 states and 5358 transitions. [2020-10-13 09:12:35,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-10-13 09:12:35,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:12:35,629 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:12:35,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:12:35,630 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:12:35,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:12:35,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1697237058, now seen corresponding path program 1 times [2020-10-13 09:12:35,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:12:35,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172680691] [2020-10-13 09:12:35,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:12:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:35,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:35,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:35,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:36,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:37,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:37,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:40,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:40,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 463 [2020-10-13 09:12:40,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:12:40,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 09:12:40,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:40,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:12:40,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-13 09:12:40,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:12:40,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:40,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:12:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:40,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:40,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:40,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:12:40,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:40,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:12:40,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:40,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:40,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:40,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:40,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:40,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:12:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:40,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:40,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:40,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:12:40,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:40,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 09:12:40,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:40,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:40,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:40,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:40,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:40,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-13 09:12:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:41,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:41,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:41,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 09:12:41,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:41,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 09:12:41,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:41,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:12:41,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:41,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 09:12:41,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:41,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-10-13 09:12:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:41,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:41,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:41,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:41,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 09:12:41,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:12:41,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-13 09:12:41,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:41,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:12:41,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:12:41,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 09:12:41,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:41,556 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 307 proven. 2 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-10-13 09:12:41,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172680691] [2020-10-13 09:12:41,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:12:41,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:12:41,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514066746] [2020-10-13 09:12:41,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:12:41,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:12:41,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:12:41,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:12:41,559 INFO L87 Difference]: Start difference. First operand 4209 states and 5358 transitions. Second operand 7 states. [2020-10-13 09:12:56,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:12:56,599 INFO L93 Difference]: Finished difference Result 11029 states and 15063 transitions. [2020-10-13 09:12:56,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:12:56,602 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 449 [2020-10-13 09:12:56,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:12:56,634 INFO L225 Difference]: With dead ends: 11029 [2020-10-13 09:12:56,634 INFO L226 Difference]: Without dead ends: 6799 [2020-10-13 09:12:56,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:12:56,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6799 states. [2020-10-13 09:12:56,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6799 to 6745. [2020-10-13 09:12:56,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6745 states. [2020-10-13 09:12:56,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6745 states to 6745 states and 8979 transitions. [2020-10-13 09:12:56,857 INFO L78 Accepts]: Start accepts. Automaton has 6745 states and 8979 transitions. Word has length 449 [2020-10-13 09:12:56,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:12:56,858 INFO L479 AbstractCegarLoop]: Abstraction has 6745 states and 8979 transitions. [2020-10-13 09:12:56,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:12:56,858 INFO L276 IsEmpty]: Start isEmpty. Operand 6745 states and 8979 transitions. [2020-10-13 09:12:56,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2020-10-13 09:12:56,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:12:56,873 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:12:56,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:12:56,874 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:12:56,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:12:56,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1279831989, now seen corresponding path program 1 times [2020-10-13 09:12:56,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:12:56,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663248470] [2020-10-13 09:12:56,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:12:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:57,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:57,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:58,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:59,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:59,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:01,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:01,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 467 [2020-10-13 09:13:01,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:13:01,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 09:13:01,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:01,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:13:01,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 422 [2020-10-13 09:13:01,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 09:13:01,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:02,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:13:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:02,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:02,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:02,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:13:02,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:02,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:13:02,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:02,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:02,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:02,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:02,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:02,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:13:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:02,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:02,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:02,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:13:02,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:02,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 09:13:02,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:02,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:02,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:02,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:02,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:02,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:13:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:02,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:02,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:02,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:13:02,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:02,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:13:02,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:02,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:02,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:02,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:02,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:02,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-13 09:13:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:02,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:02,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:02,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 09:13:02,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:02,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 09:13:02,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:02,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:13:02,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:02,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 09:13:02,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:02,625 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 117 proven. 3 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2020-10-13 09:13:02,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663248470] [2020-10-13 09:13:02,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:13:02,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:13:02,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905913728] [2020-10-13 09:13:02,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:13:02,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:13:02,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:13:02,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:13:02,627 INFO L87 Difference]: Start difference. First operand 6745 states and 8979 transitions. Second operand 5 states. [2020-10-13 09:13:11,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:13:11,856 INFO L93 Difference]: Finished difference Result 11015 states and 14537 transitions. [2020-10-13 09:13:11,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:13:11,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 453 [2020-10-13 09:13:11,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:13:11,891 INFO L225 Difference]: With dead ends: 11015 [2020-10-13 09:13:11,891 INFO L226 Difference]: Without dead ends: 6747 [2020-10-13 09:13:11,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:13:11,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6747 states. [2020-10-13 09:13:12,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6747 to 6745. [2020-10-13 09:13:12,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6745 states. [2020-10-13 09:13:12,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6745 states to 6745 states and 8971 transitions. [2020-10-13 09:13:12,108 INFO L78 Accepts]: Start accepts. Automaton has 6745 states and 8971 transitions. Word has length 453 [2020-10-13 09:13:12,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:13:12,109 INFO L479 AbstractCegarLoop]: Abstraction has 6745 states and 8971 transitions. [2020-10-13 09:13:12,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:13:12,109 INFO L276 IsEmpty]: Start isEmpty. Operand 6745 states and 8971 transitions. [2020-10-13 09:13:12,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2020-10-13 09:13:12,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:13:12,129 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:13:12,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:13:12,129 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:13:12,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:13:12,130 INFO L82 PathProgramCache]: Analyzing trace with hash 2062570698, now seen corresponding path program 1 times [2020-10-13 09:13:12,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:13:12,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693610493] [2020-10-13 09:13:12,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:13:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:12,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:12,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:12,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:14,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:14,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:16,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:17,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:17,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 468 [2020-10-13 09:13:17,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:13:17,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 09:13:17,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:17,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:13:17,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-13 09:13:17,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:13:17,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:17,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:13:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:17,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:17,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:17,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:13:17,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:17,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:13:17,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:17,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:17,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:17,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:17,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:17,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:13:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:17,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:17,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:17,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:13:17,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:17,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-13 09:13:17,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:17,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:13:17,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:17,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-13 09:13:17,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:17,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-13 09:13:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:17,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:17,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:17,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:17,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:13:17,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:13:17,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-13 09:13:17,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:17,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:13:17,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:13:17,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 09:13:17,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:18,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-13 09:13:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:18,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:18,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:18,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 09:13:18,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:18,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 09:13:18,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:18,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:18,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-13 09:13:18,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:18,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:18,354 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 236 proven. 120 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-13 09:13:18,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693610493] [2020-10-13 09:13:18,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:13:18,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:13:18,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172910072] [2020-10-13 09:13:18,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:13:18,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:13:18,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:13:18,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:13:18,356 INFO L87 Difference]: Start difference. First operand 6745 states and 8971 transitions. Second operand 7 states. [2020-10-13 09:13:26,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:13:26,637 INFO L93 Difference]: Finished difference Result 13610 states and 18631 transitions. [2020-10-13 09:13:26,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:13:26,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 454 [2020-10-13 09:13:26,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:13:26,673 INFO L225 Difference]: With dead ends: 13610 [2020-10-13 09:13:26,673 INFO L226 Difference]: Without dead ends: 6852 [2020-10-13 09:13:26,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:13:26,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6852 states. [2020-10-13 09:13:26,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6852 to 6746. [2020-10-13 09:13:26,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6746 states. [2020-10-13 09:13:26,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6746 states to 6746 states and 8685 transitions. [2020-10-13 09:13:26,886 INFO L78 Accepts]: Start accepts. Automaton has 6746 states and 8685 transitions. Word has length 454 [2020-10-13 09:13:26,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:13:26,887 INFO L479 AbstractCegarLoop]: Abstraction has 6746 states and 8685 transitions. [2020-10-13 09:13:26,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:13:26,887 INFO L276 IsEmpty]: Start isEmpty. Operand 6746 states and 8685 transitions. [2020-10-13 09:13:26,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2020-10-13 09:13:26,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:13:26,902 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:13:26,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:13:26,903 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:13:26,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:13:26,903 INFO L82 PathProgramCache]: Analyzing trace with hash 935574326, now seen corresponding path program 1 times [2020-10-13 09:13:26,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:13:26,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892331339] [2020-10-13 09:13:26,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:13:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:27,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:27,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:27,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:29,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:30,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:32,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:32,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 468 [2020-10-13 09:13:32,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:13:32,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 09:13:32,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:32,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:13:32,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 421 [2020-10-13 09:13:32,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 09:13:32,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:32,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:13:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:32,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:32,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:32,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:13:32,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:32,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:13:32,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:32,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:32,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:32,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:32,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:32,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:13:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:32,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:32,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:32,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:13:32,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:32,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 09:13:32,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:32,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:32,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:32,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:32,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:32,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:13:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:32,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:32,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:32,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 09:13:32,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:32,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:13:32,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:32,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:13:32,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:32,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:13:32,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:32,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-13 09:13:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:32,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:32,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:13:32,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 09:13:32,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:13:32,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 09:13:32,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:13:32,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 09:13:32,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:13:32,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 09:13:32,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:13:32,784 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 117 proven. 3 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2020-10-13 09:13:32,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892331339] [2020-10-13 09:13:32,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:13:32,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:13:32,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895112073] [2020-10-13 09:13:32,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:13:32,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:13:32,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:13:32,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:13:32,787 INFO L87 Difference]: Start difference. First operand 6746 states and 8685 transitions. Second operand 6 states. [2020-10-13 09:13:49,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:13:49,702 INFO L93 Difference]: Finished difference Result 17525 states and 23760 transitions. [2020-10-13 09:13:49,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:13:49,704 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 454 [2020-10-13 09:13:49,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:13:49,749 INFO L225 Difference]: With dead ends: 17525 [2020-10-13 09:13:49,749 INFO L226 Difference]: Without dead ends: 10801 [2020-10-13 09:13:49,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:13:49,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10801 states. [2020-10-13 09:13:49,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10801 to 10181. [2020-10-13 09:13:49,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10181 states. [2020-10-13 09:13:50,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10181 states to 10181 states and 13472 transitions. [2020-10-13 09:13:50,019 INFO L78 Accepts]: Start accepts. Automaton has 10181 states and 13472 transitions. Word has length 454 [2020-10-13 09:13:50,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:13:50,021 INFO L479 AbstractCegarLoop]: Abstraction has 10181 states and 13472 transitions. [2020-10-13 09:13:50,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:13:50,021 INFO L276 IsEmpty]: Start isEmpty. Operand 10181 states and 13472 transitions. [2020-10-13 09:13:50,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2020-10-13 09:13:50,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:13:50,034 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:13:50,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:13:50,035 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:13:50,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:13:50,035 INFO L82 PathProgramCache]: Analyzing trace with hash 2024943007, now seen corresponding path program 1 times [2020-10-13 09:13:50,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:13:50,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319686856] [2020-10-13 09:13:50,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:13:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:13:50,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:50,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:13:50,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking...