/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=BIGGEST --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/Problem03_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:26:41,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:26:41,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:26:41,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:26:41,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:26:41,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:26:41,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:26:41,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:26:41,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:26:41,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:26:41,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:26:41,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:26:41,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:26:41,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:26:41,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:26:41,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:26:41,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:26:41,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:26:41,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:26:41,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:26:41,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:26:41,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:26:41,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:26:41,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:26:41,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:26:41,412 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:26:41,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:26:41,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:26:41,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:26:41,424 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:26:41,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:26:41,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:26:41,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:26:41,427 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:26:41,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:26:41,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:26:41,429 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:26:41,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:26:41,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:26:41,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:26:41,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:26:41,432 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 [2020-10-12 11:26:41,471 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:26:41,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:26:41,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:26:41,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:26:41,474 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:26:41,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:26:41,474 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:26:41,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:26:41,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:26:41,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:26:41,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:26:41,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:26:41,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:26:41,477 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:26:41,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:26:41,477 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:26:41,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:26:41,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:26:41,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:26:41,478 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:26:41,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:26:41,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:26:41,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:26:41,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:26:41,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:26:41,479 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:26:41,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:26:41,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:26:41,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:26:41,480 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:26:41,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:26:41,812 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:26:41,815 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:26:41,817 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:26:41,817 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:26:41,818 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label45.c [2020-10-12 11:26:41,887 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/118c3a00d/df1a98cd71864e149a69bff7541639f8/FLAG508e2b9bc [2020-10-12 11:26:42,516 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:26:42,517 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label45.c [2020-10-12 11:26:42,537 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/118c3a00d/df1a98cd71864e149a69bff7541639f8/FLAG508e2b9bc [2020-10-12 11:26:42,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/118c3a00d/df1a98cd71864e149a69bff7541639f8 [2020-10-12 11:26:42,674 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:26:42,676 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:26:42,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:26:42,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:26:42,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:26:42,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:26:42" (1/1) ... [2020-10-12 11:26:42,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cafb76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:42, skipping insertion in model container [2020-10-12 11:26:42,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:26:42" (1/1) ... [2020-10-12 11:26:42,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:26:42,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:26:43,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:26:43,716 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:26:43,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:26:44,007 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:26:44,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:44 WrapperNode [2020-10-12 11:26:44,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:26:44,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:26:44,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:26:44,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:26:44,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:44" (1/1) ... [2020-10-12 11:26:44,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:44" (1/1) ... [2020-10-12 11:26:44,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:44" (1/1) ... [2020-10-12 11:26:44,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:44" (1/1) ... [2020-10-12 11:26:44,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:44" (1/1) ... [2020-10-12 11:26:44,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:44" (1/1) ... [2020-10-12 11:26:44,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:44" (1/1) ... [2020-10-12 11:26:44,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:26:44,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:26:44,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:26:44,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:26:44,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:44" (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 [2020-10-12 11:26:44,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:26:44,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:26:44,277 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:26:44,277 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:26:44,277 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:26:44,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:26:44,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:26:44,279 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:26:44,279 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:26:44,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:26:44,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:26:46,575 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:26:46,575 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:26:46,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:26:46 BoogieIcfgContainer [2020-10-12 11:26:46,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:26:46,591 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:26:46,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:26:46,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:26:46,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:26:42" (1/3) ... [2020-10-12 11:26:46,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25bc0a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:26:46, skipping insertion in model container [2020-10-12 11:26:46,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:44" (2/3) ... [2020-10-12 11:26:46,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25bc0a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:26:46, skipping insertion in model container [2020-10-12 11:26:46,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:26:46" (3/3) ... [2020-10-12 11:26:46,600 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label45.c [2020-10-12 11:26:46,613 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:26:46,625 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:26:46,639 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:26:46,670 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:26:46,671 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:26:46,671 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:26:46,671 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:26:46,671 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:26:46,672 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:26:46,672 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:26:46,672 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:26:46,711 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-12 11:26:46,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-12 11:26:46,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:26:46,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:26:46,734 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:26:46,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:26:46,742 INFO L82 PathProgramCache]: Analyzing trace with hash -148239995, now seen corresponding path program 1 times [2020-10-12 11:26:46,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:26:46,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992718426] [2020-10-12 11:26:46,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:26:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:26:47,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:47,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:51,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:26:51,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-12 11:26:51,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:26:51,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4358 [2020-10-12 11:26:51,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:26:51,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 11:26:51,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:26:51,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 11:26:51,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:26:52,804 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2020-10-12 11:26:52,952 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-12 11:26:53,205 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 78 [2020-10-12 11:26:53,449 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 78 [2020-10-12 11:26:53,834 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 89 [2020-10-12 11:26:54,205 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 84 [2020-10-12 11:26:54,584 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 78 [2020-10-12 11:26:54,958 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 72 [2020-10-12 11:26:55,239 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 58 [2020-10-12 11:26:55,398 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:26:55,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:26:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:26:55,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:55,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:26:55,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:26:55,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:26:55,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 11:26:55,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:26:55,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:26:55,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:26:55,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:26:55,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:26:56,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:26:56,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992718426] [2020-10-12 11:26:56,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:26:56,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 11:26:56,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051257208] [2020-10-12 11:26:56,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 11:26:56,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:26:56,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 11:26:56,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:26:56,246 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 13 states. [2020-10-12 11:26:56,647 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 11:26:57,359 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 173 [2020-10-12 11:26:58,094 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 173 [2020-10-12 11:26:58,853 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 181 [2020-10-12 11:26:59,715 WARN L193 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 178 [2020-10-12 11:27:01,095 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 215 DAG size of output: 177 [2020-10-12 11:27:02,703 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 218 DAG size of output: 176 [2020-10-12 11:27:06,130 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 220 DAG size of output: 174 [2020-10-12 11:27:07,133 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 172 [2020-10-12 11:27:10,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:27:10,088 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-12 11:27:10,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:27:10,091 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 150 [2020-10-12 11:27:10,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:27:10,107 INFO L225 Difference]: With dead ends: 737 [2020-10-12 11:27:10,108 INFO L226 Difference]: Without dead ends: 364 [2020-10-12 11:27:10,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2020-10-12 11:27:10,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-12 11:27:10,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-12 11:27:10,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-12 11:27:10,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-12 11:27:10,199 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 150 [2020-10-12 11:27:10,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:27:10,201 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-12 11:27:10,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 11:27:10,201 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-12 11:27:10,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-12 11:27:10,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:27:10,209 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:27:10,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:27:10,210 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:27:10,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:27:10,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1098345218, now seen corresponding path program 1 times [2020-10-12 11:27:10,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:27:10,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579716720] [2020-10-12 11:27:10,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:27:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:10,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:10,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:11,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:14,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:14,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-12 11:27:14,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:27:14,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4046 [2020-10-12 11:27:14,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 11:27:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:27:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-12 11:27:14,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:27:15,520 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 72 [2020-10-12 11:27:15,856 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 87 [2020-10-12 11:27:16,184 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 85 [2020-10-12 11:27:16,459 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 72 [2020-10-12 11:27:16,699 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 62 [2020-10-12 11:27:16,898 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 49 [2020-10-12 11:27:17,043 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:27:17,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:27:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:17,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:17,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:17,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:27:17,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:17,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:27:17,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:17,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:27:17,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:27:17,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:27:17,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:17,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:27:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:17,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:17,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:17,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:27:17,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:17,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 11:27:17,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:17,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:27:17,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:27:17,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:27:17,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:18,020 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:27:18,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579716720] [2020-10-12 11:27:18,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:27:18,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 11:27:18,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828709293] [2020-10-12 11:27:18,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 11:27:18,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:27:18,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 11:27:18,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-12 11:27:18,024 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 16 states. [2020-10-12 11:27:18,280 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 11:27:18,873 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 96 [2020-10-12 11:27:19,426 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 102 [2020-10-12 11:27:20,005 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 176 [2020-10-12 11:27:20,667 WARN L193 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 196 [2020-10-12 11:27:21,835 WARN L193 SmtUtils]: Spent 971.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 193 [2020-10-12 11:27:23,759 WARN L193 SmtUtils]: Spent 982.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 190 [2020-10-12 11:27:26,102 WARN L193 SmtUtils]: Spent 906.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 187 [2020-10-12 11:27:28,893 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 184 [2020-10-12 11:27:29,909 WARN L193 SmtUtils]: Spent 862.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 180 [2020-10-12 11:27:31,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:27:31,796 INFO L93 Difference]: Finished difference Result 756 states and 1212 transitions. [2020-10-12 11:27:31,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 11:27:31,799 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 161 [2020-10-12 11:27:31,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:27:31,805 INFO L225 Difference]: With dead ends: 756 [2020-10-12 11:27:31,805 INFO L226 Difference]: Without dead ends: 513 [2020-10-12 11:27:31,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=187, Invalid=515, Unknown=0, NotChecked=0, Total=702 [2020-10-12 11:27:31,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2020-10-12 11:27:31,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 509. [2020-10-12 11:27:31,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-10-12 11:27:31,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 677 transitions. [2020-10-12 11:27:31,840 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 677 transitions. Word has length 161 [2020-10-12 11:27:31,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:27:31,841 INFO L479 AbstractCegarLoop]: Abstraction has 509 states and 677 transitions. [2020-10-12 11:27:31,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 11:27:31,841 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 677 transitions. [2020-10-12 11:27:31,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-12 11:27:31,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:27:31,847 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:27:31,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:27:31,847 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:27:31,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:27:31,848 INFO L82 PathProgramCache]: Analyzing trace with hash -253551542, now seen corresponding path program 1 times [2020-10-12 11:27:31,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:27:31,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579978751] [2020-10-12 11:27:31,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:27:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:31,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:32,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:33,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:33,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-12 11:27:33,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:27:33,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1477 [2020-10-12 11:27:33,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:33,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:27:33,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:27:33,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-12 11:27:33,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:33,658 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:27:33,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:27:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:33,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:33,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:33,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:27:33,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:33,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 11:27:33,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:33,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:27:33,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:27:33,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:27:33,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:33,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:27:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:33,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:33,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:33,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:33,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:27:33,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:27:33,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-12 11:27:33,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:33,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:27:33,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:27:33,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:27:33,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:33,923 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 11:27:33,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579978751] [2020-10-12 11:27:33,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:27:33,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:27:33,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589174618] [2020-10-12 11:27:33,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:27:33,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:27:33,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:27:33,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:27:33,934 INFO L87 Difference]: Start difference. First operand 509 states and 677 transitions. Second operand 6 states. [2020-10-12 11:27:34,099 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:27:36,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:27:36,700 INFO L93 Difference]: Finished difference Result 1006 states and 1494 transitions. [2020-10-12 11:27:36,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:27:36,701 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2020-10-12 11:27:36,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:27:36,706 INFO L225 Difference]: With dead ends: 1006 [2020-10-12 11:27:36,706 INFO L226 Difference]: Without dead ends: 763 [2020-10-12 11:27:36,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:27:36,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2020-10-12 11:27:36,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 757. [2020-10-12 11:27:36,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 757 states. [2020-10-12 11:27:36,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1065 transitions. [2020-10-12 11:27:36,750 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1065 transitions. Word has length 171 [2020-10-12 11:27:36,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:27:36,751 INFO L479 AbstractCegarLoop]: Abstraction has 757 states and 1065 transitions. [2020-10-12 11:27:36,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:27:36,751 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1065 transitions. [2020-10-12 11:27:36,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-12 11:27:36,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:27:36,756 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:27:36,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:27:36,757 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:27:36,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:27:36,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1507487741, now seen corresponding path program 1 times [2020-10-12 11:27:36,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:27:36,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250668345] [2020-10-12 11:27:36,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:27:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:36,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:37,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:37,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:40,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:40,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:40,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-12 11:27:40,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:27:40,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3512 [2020-10-12 11:27:40,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:40,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:27:40,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:27:40,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 11:27:40,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:40,497 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:27:40,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:27:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:40,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:40,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:40,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:27:40,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:40,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 11:27:40,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:40,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:27:40,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:27:40,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:27:40,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:27:40,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:27:40,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:40,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:40,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:40,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:27:40,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:40,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-12 11:27:40,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:40,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:27:40,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:27:40,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:27:40,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:27:40,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:27:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:40,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:40,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:40,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 11:27:40,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:40,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 11:27:40,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:40,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:27:40,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:27:40,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 11:27:40,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:40,899 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:27:40,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250668345] [2020-10-12 11:27:40,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:27:40,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:27:40,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260408876] [2020-10-12 11:27:40,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:27:40,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:27:40,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:27:40,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:27:40,902 INFO L87 Difference]: Start difference. First operand 757 states and 1065 transitions. Second operand 8 states. [2020-10-12 11:27:41,038 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:27:44,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:27:44,076 INFO L93 Difference]: Finished difference Result 1766 states and 2686 transitions. [2020-10-12 11:27:44,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 11:27:44,077 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 180 [2020-10-12 11:27:44,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:27:44,086 INFO L225 Difference]: With dead ends: 1766 [2020-10-12 11:27:44,086 INFO L226 Difference]: Without dead ends: 1275 [2020-10-12 11:27:44,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 11:27:44,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2020-10-12 11:27:44,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1257. [2020-10-12 11:27:44,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1257 states. [2020-10-12 11:27:44,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1861 transitions. [2020-10-12 11:27:44,139 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1861 transitions. Word has length 180 [2020-10-12 11:27:44,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:27:44,140 INFO L479 AbstractCegarLoop]: Abstraction has 1257 states and 1861 transitions. [2020-10-12 11:27:44,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:27:44,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1861 transitions. [2020-10-12 11:27:44,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-12 11:27:44,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:27:44,145 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:27:44,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:27:44,146 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:27:44,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:27:44,146 INFO L82 PathProgramCache]: Analyzing trace with hash 277120281, now seen corresponding path program 1 times [2020-10-12 11:27:44,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:27:44,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835840104] [2020-10-12 11:27:44,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:27:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:44,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:44,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:45,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:45,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:45,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 11:27:45,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:27:45,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1304 [2020-10-12 11:27:45,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:45,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:27:45,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:27:45,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-12 11:27:45,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:45,708 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:27:45,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:27:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:45,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:45,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:45,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:27:45,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:45,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:27:45,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:45,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:27:45,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:27:45,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:27:45,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:45,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:27:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:45,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:45,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:45,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:27:45,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:45,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 11:27:45,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:45,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:27:45,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:27:45,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:27:45,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:45,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:27:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:45,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:45,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:45,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:45,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:27:45,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:27:45,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-12 11:27:45,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:45,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:27:45,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:27:45,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:27:45,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:27:46,101 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:27:46,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835840104] [2020-10-12 11:27:46,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:27:46,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:27:46,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858723376] [2020-10-12 11:27:46,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:27:46,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:27:46,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:27:46,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:27:46,105 INFO L87 Difference]: Start difference. First operand 1257 states and 1861 transitions. Second operand 6 states. [2020-10-12 11:27:46,286 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:27:48,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:27:48,589 INFO L93 Difference]: Finished difference Result 2223 states and 3523 transitions. [2020-10-12 11:27:48,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:27:48,590 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2020-10-12 11:27:48,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:27:48,604 INFO L225 Difference]: With dead ends: 2223 [2020-10-12 11:27:48,604 INFO L226 Difference]: Without dead ends: 2221 [2020-10-12 11:27:48,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:27:48,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2221 states. [2020-10-12 11:27:48,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2221 to 2183. [2020-10-12 11:27:48,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2183 states. [2020-10-12 11:27:48,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 3390 transitions. [2020-10-12 11:27:48,686 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 3390 transitions. Word has length 182 [2020-10-12 11:27:48,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:27:48,687 INFO L479 AbstractCegarLoop]: Abstraction has 2183 states and 3390 transitions. [2020-10-12 11:27:48,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:27:48,687 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 3390 transitions. [2020-10-12 11:27:48,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-12 11:27:48,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:27:48,724 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:27:48,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:27:48,725 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:27:48,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:27:48,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1613261728, now seen corresponding path program 1 times [2020-10-12 11:27:48,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:27:48,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663212553] [2020-10-12 11:27:48,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:27:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:48,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:48,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:49,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:49,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:50,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:52,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:52,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-12 11:27:52,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:27:52,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3871 [2020-10-12 11:27:52,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:52,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:27:52,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:27:52,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 11:27:52,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:52,805 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:27:52,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:27:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:52,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:52,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:52,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:27:52,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:52,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:27:52,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:52,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:27:52,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:27:52,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:27:52,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:27:52,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:27:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:52,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:52,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:53,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:53,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:27:53,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:27:53,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-12 11:27:53,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:53,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:27:53,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:27:53,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:27:53,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:53,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:27:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:53,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:53,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:53,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 11:27:53,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:53,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 11:27:53,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:53,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:27:53,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:27:53,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 11:27:53,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:53,223 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-12 11:27:53,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663212553] [2020-10-12 11:27:53,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:27:53,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:27:53,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870792540] [2020-10-12 11:27:53,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:27:53,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:27:53,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:27:53,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:27:53,228 INFO L87 Difference]: Start difference. First operand 2183 states and 3390 transitions. Second operand 7 states. [2020-10-12 11:27:53,359 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:27:54,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:27:54,965 INFO L93 Difference]: Finished difference Result 4016 states and 6426 transitions. [2020-10-12 11:27:54,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:27:54,974 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2020-10-12 11:27:54,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:27:54,985 INFO L225 Difference]: With dead ends: 4016 [2020-10-12 11:27:54,985 INFO L226 Difference]: Without dead ends: 2099 [2020-10-12 11:27:54,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:27:54,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2099 states. [2020-10-12 11:27:55,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2099 to 2099. [2020-10-12 11:27:55,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2099 states. [2020-10-12 11:27:55,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 3152 transitions. [2020-10-12 11:27:55,057 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 3152 transitions. Word has length 195 [2020-10-12 11:27:55,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:27:55,057 INFO L479 AbstractCegarLoop]: Abstraction has 2099 states and 3152 transitions. [2020-10-12 11:27:55,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:27:55,057 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 3152 transitions. [2020-10-12 11:27:55,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-12 11:27:55,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:27:55,065 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:27:55,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:27:55,065 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:27:55,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:27:55,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1094332249, now seen corresponding path program 1 times [2020-10-12 11:27:55,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:27:55,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834841004] [2020-10-12 11:27:55,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:27:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:55,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:55,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:56,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:56,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:56,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-12 11:27:56,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:27:56,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1279 [2020-10-12 11:27:56,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:56,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:27:56,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:27:56,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-12 11:27:56,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:27:56,590 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:27:56,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:27:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:56,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:56,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:56,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:27:56,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:56,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:27:56,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:56,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:27:56,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:27:56,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:27:56,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:56,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:27:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:56,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:56,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:56,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:27:56,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:56,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 11:27:56,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:56,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:27:56,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:27:56,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:27:56,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:56,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:27:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:56,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:56,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:56,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:56,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 11:27:56,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:27:56,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-12 11:27:56,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:56,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:27:56,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:27:56,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 11:27:56,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:27:57,043 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 34 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:27:57,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834841004] [2020-10-12 11:27:57,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:27:57,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:27:57,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662323064] [2020-10-12 11:27:57,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:27:57,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:27:57,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:27:57,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:27:57,047 INFO L87 Difference]: Start difference. First operand 2099 states and 3152 transitions. Second operand 7 states. [2020-10-12 11:27:57,346 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:27:58,432 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:28:01,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:28:01,576 INFO L93 Difference]: Finished difference Result 7675 states and 13111 transitions. [2020-10-12 11:28:01,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:28:01,577 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 198 [2020-10-12 11:28:01,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:28:01,621 INFO L225 Difference]: With dead ends: 7675 [2020-10-12 11:28:01,621 INFO L226 Difference]: Without dead ends: 5842 [2020-10-12 11:28:01,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:28:01,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5842 states. [2020-10-12 11:28:01,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5842 to 5722. [2020-10-12 11:28:01,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5722 states. [2020-10-12 11:28:01,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5722 states to 5722 states and 8591 transitions. [2020-10-12 11:28:01,826 INFO L78 Accepts]: Start accepts. Automaton has 5722 states and 8591 transitions. Word has length 198 [2020-10-12 11:28:01,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:28:01,827 INFO L479 AbstractCegarLoop]: Abstraction has 5722 states and 8591 transitions. [2020-10-12 11:28:01,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:28:01,827 INFO L276 IsEmpty]: Start isEmpty. Operand 5722 states and 8591 transitions. [2020-10-12 11:28:01,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-12 11:28:01,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:28:01,848 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:28:01,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 11:28:01,848 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:28:01,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:28:01,849 INFO L82 PathProgramCache]: Analyzing trace with hash -665802014, now seen corresponding path program 1 times [2020-10-12 11:28:01,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:28:01,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64995172] [2020-10-12 11:28:01,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:28:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:01,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:01,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:02,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:03,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:03,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:06,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:06,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:06,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-12 11:28:06,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 11:28:06,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-12 11:28:06,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:06,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:28:06,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-12 11:28:06,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-12 11:28:06,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:07,129 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:28:07,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:28:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:07,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:07,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:07,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:28:07,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:07,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:28:07,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:28:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:07,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:28:07,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:07,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:28:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:07,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:07,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:07,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:28:07,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:07,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:28:07,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:07,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:28:07,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:07,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:28:07,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:07,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:28:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:07,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:07,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:07,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:28:07,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:07,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 11:28:07,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:07,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:28:07,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:07,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 11:28:07,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:07,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 11:28:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:07,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:07,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:07,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:07,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 11:28:07,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:28:07,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-12 11:28:07,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:07,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:07,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:07,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 11:28:07,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:07,569 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 48 proven. 25 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 11:28:07,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64995172] [2020-10-12 11:28:07,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:28:07,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:28:07,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229697709] [2020-10-12 11:28:07,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:28:07,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:28:07,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:28:07,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:28:07,572 INFO L87 Difference]: Start difference. First operand 5722 states and 8591 transitions. Second operand 7 states. [2020-10-12 11:28:07,703 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:28:07,972 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:28:10,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:28:10,407 INFO L93 Difference]: Finished difference Result 16876 states and 27509 transitions. [2020-10-12 11:28:10,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:28:10,407 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 208 [2020-10-12 11:28:10,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:28:10,473 INFO L225 Difference]: With dead ends: 16876 [2020-10-12 11:28:10,474 INFO L226 Difference]: Without dead ends: 11420 [2020-10-12 11:28:10,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:28:10,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11420 states. [2020-10-12 11:28:10,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11420 to 11276. [2020-10-12 11:28:10,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11276 states. [2020-10-12 11:28:10,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11276 states to 11276 states and 16799 transitions. [2020-10-12 11:28:10,933 INFO L78 Accepts]: Start accepts. Automaton has 11276 states and 16799 transitions. Word has length 208 [2020-10-12 11:28:10,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:28:10,933 INFO L479 AbstractCegarLoop]: Abstraction has 11276 states and 16799 transitions. [2020-10-12 11:28:10,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:28:10,934 INFO L276 IsEmpty]: Start isEmpty. Operand 11276 states and 16799 transitions. [2020-10-12 11:28:10,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-12 11:28:10,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:28:10,970 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:28:10,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 11:28:10,971 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:28:10,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:28:10,971 INFO L82 PathProgramCache]: Analyzing trace with hash -60027232, now seen corresponding path program 1 times [2020-10-12 11:28:10,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:28:10,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236089621] [2020-10-12 11:28:10,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:28:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:11,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:11,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:11,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:11,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:11,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:12,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:12,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:12,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:14,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:14,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-12 11:28:14,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 11:28:14,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3661 [2020-10-12 11:28:14,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:28:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:28:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 11:28:14,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:14,832 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:28:14,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:28:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:14,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:14,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:14,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:28:14,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:14,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:28:14,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:14,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:28:14,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:14,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:28:14,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:14,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:28:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:14,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:14,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:14,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:28:14,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:14,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 11:28:14,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:14,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:28:14,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:14,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:28:14,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:14,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:28:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:14,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:14,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:14,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:14,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:14,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:28:14,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:28:14,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 11:28:14,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:14,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:14,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:14,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 11:28:14,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:14,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 11:28:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:15,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:15,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:15,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 11:28:15,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:15,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 11:28:15,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:15,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:15,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:15,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 11:28:15,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:15,101 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 70 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 11:28:15,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236089621] [2020-10-12 11:28:15,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:28:15,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:28:15,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645445866] [2020-10-12 11:28:15,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:28:15,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:28:15,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:28:15,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:28:15,104 INFO L87 Difference]: Start difference. First operand 11276 states and 16799 transitions. Second operand 7 states. [2020-10-12 11:28:15,403 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:28:16,019 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:28:19,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:28:19,911 INFO L93 Difference]: Finished difference Result 41005 states and 69509 transitions. [2020-10-12 11:28:19,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:28:19,911 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 208 [2020-10-12 11:28:19,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:28:20,059 INFO L225 Difference]: With dead ends: 41005 [2020-10-12 11:28:20,059 INFO L226 Difference]: Without dead ends: 29995 [2020-10-12 11:28:20,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:28:20,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29995 states. [2020-10-12 11:28:20,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29995 to 27323. [2020-10-12 11:28:20,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27323 states. [2020-10-12 11:28:21,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27323 states to 27323 states and 43077 transitions. [2020-10-12 11:28:21,084 INFO L78 Accepts]: Start accepts. Automaton has 27323 states and 43077 transitions. Word has length 208 [2020-10-12 11:28:21,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:28:21,084 INFO L479 AbstractCegarLoop]: Abstraction has 27323 states and 43077 transitions. [2020-10-12 11:28:21,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:28:21,084 INFO L276 IsEmpty]: Start isEmpty. Operand 27323 states and 43077 transitions. [2020-10-12 11:28:21,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-12 11:28:21,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:28:21,168 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 11:28:21,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 11:28:21,168 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:28:21,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:28:21,169 INFO L82 PathProgramCache]: Analyzing trace with hash 2032143772, now seen corresponding path program 1 times [2020-10-12 11:28:21,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:28:21,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367846568] [2020-10-12 11:28:21,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:28:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:21,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:22,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:22,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:22,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:22,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:22,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:22,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:24,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:25,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:26,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:26,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-12 11:28:26,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 11:28:26,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 11:28:26,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:26,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:28:26,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:28:26,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 11:28:26,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:26,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:28:26,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:26,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:26,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:26,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:28:26,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:26,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:28:26,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:26,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:28:26,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:26,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:28:26,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:26,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:28:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:26,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:26,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:26,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:26,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:28:26,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:28:26,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 11:28:26,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:26,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:26,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:26,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:28:26,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:26,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:28:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:26,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:26,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:26,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 11:28:26,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:26,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 11:28:26,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:26,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:26,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:26,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 11:28:26,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:26,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 11:28:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:26,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:26,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:26,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:26,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:28:26,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:28:26,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 11:28:26,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:26,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:28:26,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 11:28:26,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:28:26,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:26,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-12 11:28:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:26,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:26,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:26,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 11:28:26,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:26,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 11:28:26,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:28:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 11:28:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:28:26,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:26,877 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 116 proven. 44 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-12 11:28:26,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367846568] [2020-10-12 11:28:26,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:28:26,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 11:28:26,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829893952] [2020-10-12 11:28:26,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 11:28:26,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:28:26,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 11:28:26,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:28:26,880 INFO L87 Difference]: Start difference. First operand 27323 states and 43077 transitions. Second operand 9 states. [2020-10-12 11:28:27,048 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:28:27,242 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:28:28,477 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 11:28:30,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:28:30,539 INFO L93 Difference]: Finished difference Result 58929 states and 93920 transitions. [2020-10-12 11:28:30,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 11:28:30,539 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 253 [2020-10-12 11:28:30,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:28:30,723 INFO L225 Difference]: With dead ends: 58929 [2020-10-12 11:28:30,723 INFO L226 Difference]: Without dead ends: 40772 [2020-10-12 11:28:30,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2020-10-12 11:28:30,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40772 states. [2020-10-12 11:28:31,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40772 to 40534. [2020-10-12 11:28:31,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40534 states. [2020-10-12 11:28:31,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40534 states to 40534 states and 62950 transitions. [2020-10-12 11:28:31,848 INFO L78 Accepts]: Start accepts. Automaton has 40534 states and 62950 transitions. Word has length 253 [2020-10-12 11:28:31,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:28:31,848 INFO L479 AbstractCegarLoop]: Abstraction has 40534 states and 62950 transitions. [2020-10-12 11:28:31,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 11:28:31,848 INFO L276 IsEmpty]: Start isEmpty. Operand 40534 states and 62950 transitions. [2020-10-12 11:28:31,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-12 11:28:31,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:28:31,955 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:28:31,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 11:28:31,956 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:28:31,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:28:31,956 INFO L82 PathProgramCache]: Analyzing trace with hash 579218069, now seen corresponding path program 1 times [2020-10-12 11:28:31,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:28:31,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148829890] [2020-10-12 11:28:31,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:28:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:32,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:32,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:32,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:35,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:37,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:37,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-12 11:28:37,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:28:37,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-12 11:28:37,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:37,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:28:37,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:28:37,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 11:28:37,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:37,227 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:28:37,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:28:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:37,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:37,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:37,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:28:37,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:37,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:28:37,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:37,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:28:37,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:37,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:28:37,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:37,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:28:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:37,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:37,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:37,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:28:37,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:37,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 11:28:37,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:37,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:37,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:37,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:28:37,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:37,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:28:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:37,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:37,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:37,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:28:37,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:37,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 11:28:37,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:37,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:37,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:37,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:28:37,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:37,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 11:28:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:37,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:37,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:37,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 11:28:37,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:37,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 11:28:37,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:37,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:28:37,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-12 11:28:37,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:28:37,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:37,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-12 11:28:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:37,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:37,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:37,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 11:28:37,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:37,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 11:28:37,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:37,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:28:37,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 11:28:37,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:28:37,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:37,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-12 11:28:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:37,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:37,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:37,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 11:28:37,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:37,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 11:28:37,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:37,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:28:37,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 11:28:37,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:28:37,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:37,881 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 136 proven. 91 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-12 11:28:37,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148829890] [2020-10-12 11:28:37,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:28:37,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:28:37,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281122121] [2020-10-12 11:28:37,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:28:37,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:28:37,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:28:37,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:28:37,883 INFO L87 Difference]: Start difference. First operand 40534 states and 62950 transitions. Second operand 8 states. [2020-10-12 11:28:38,010 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:28:39,794 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 11:28:41,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:28:41,054 INFO L93 Difference]: Finished difference Result 99564 states and 156618 transitions. [2020-10-12 11:28:41,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:28:41,055 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 288 [2020-10-12 11:28:41,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:28:41,328 INFO L225 Difference]: With dead ends: 99564 [2020-10-12 11:28:41,328 INFO L226 Difference]: Without dead ends: 59926 [2020-10-12 11:28:41,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-12 11:28:41,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59926 states. [2020-10-12 11:28:44,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59926 to 59689. [2020-10-12 11:28:44,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59689 states. [2020-10-12 11:28:44,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59689 states to 59689 states and 94250 transitions. [2020-10-12 11:28:44,791 INFO L78 Accepts]: Start accepts. Automaton has 59689 states and 94250 transitions. Word has length 288 [2020-10-12 11:28:44,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:28:44,791 INFO L479 AbstractCegarLoop]: Abstraction has 59689 states and 94250 transitions. [2020-10-12 11:28:44,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:28:44,792 INFO L276 IsEmpty]: Start isEmpty. Operand 59689 states and 94250 transitions. [2020-10-12 11:28:44,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-12 11:28:44,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:28:44,955 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:28:44,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 11:28:44,955 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:28:44,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:28:44,956 INFO L82 PathProgramCache]: Analyzing trace with hash 742638059, now seen corresponding path program 1 times [2020-10-12 11:28:44,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:28:44,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035431562] [2020-10-12 11:28:44,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:28:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:45,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:45,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:46,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:46,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:49,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:50,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:50,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-12 11:28:50,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:28:50,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-12 11:28:50,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:50,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:28:50,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:28:50,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-12 11:28:50,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:50,315 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:28:50,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:28:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:50,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:50,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:50,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:28:50,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:50,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:28:50,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:50,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:28:50,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:50,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:28:50,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:50,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:28:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:50,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:50,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:50,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:28:50,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:50,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-12 11:28:50,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:50,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:50,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:50,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 11:28:50,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:50,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 11:28:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:50,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:50,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:50,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 11:28:50,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:50,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 11:28:50,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:50,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:50,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:50,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 11:28:50,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:50,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-12 11:28:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:50,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:50,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:50,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 11:28:50,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:50,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 11:28:50,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:50,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:28:50,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 11:28:50,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:28:50,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:51,143 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 146 proven. 58 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 11:28:51,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035431562] [2020-10-12 11:28:51,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:28:51,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:28:51,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519734097] [2020-10-12 11:28:51,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:28:51,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:28:51,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:28:51,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:28:51,145 INFO L87 Difference]: Start difference. First operand 59689 states and 94250 transitions. Second operand 8 states. [2020-10-12 11:28:51,285 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:28:52,306 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 11:28:54,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:28:54,561 INFO L93 Difference]: Finished difference Result 93733 states and 141532 transitions. [2020-10-12 11:28:54,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:28:54,562 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 300 [2020-10-12 11:28:54,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:28:54,782 INFO L225 Difference]: With dead ends: 93733 [2020-10-12 11:28:54,783 INFO L226 Difference]: Without dead ends: 65069 [2020-10-12 11:28:54,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:28:54,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65069 states. [2020-10-12 11:28:58,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65069 to 64445. [2020-10-12 11:28:58,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64445 states. [2020-10-12 11:28:58,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64445 states to 64445 states and 100316 transitions. [2020-10-12 11:28:58,721 INFO L78 Accepts]: Start accepts. Automaton has 64445 states and 100316 transitions. Word has length 300 [2020-10-12 11:28:58,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:28:58,721 INFO L479 AbstractCegarLoop]: Abstraction has 64445 states and 100316 transitions. [2020-10-12 11:28:58,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:28:58,722 INFO L276 IsEmpty]: Start isEmpty. Operand 64445 states and 100316 transitions. [2020-10-12 11:28:58,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-12 11:28:58,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:28:58,822 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:28:58,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 11:28:58,822 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:28:58,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:28:58,822 INFO L82 PathProgramCache]: Analyzing trace with hash 891855432, now seen corresponding path program 1 times [2020-10-12 11:28:58,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:28:58,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591036161] [2020-10-12 11:28:58,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:28:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:58,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:58,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:59,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:00,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:03,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:03,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-12 11:29:03,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:29:03,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 11:29:03,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:03,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:29:03,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-12 11:29:03,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 11:29:03,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:04,075 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:29:04,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:29:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:04,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:04,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:04,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:29:04,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:04,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:29:04,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:04,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:29:04,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:04,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:29:04,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:04,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:29:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:04,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:04,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:04,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:29:04,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:04,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 11:29:04,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:04,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:29:04,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:04,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:29:04,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:04,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 11:29:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:04,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:04,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:04,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:29:04,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:04,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:29:04,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:04,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:29:04,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:04,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 11:29:04,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:04,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-12 11:29:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:04,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:04,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:04,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:04,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 11:29:04,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:29:04,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 11:29:04,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:04,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:04,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:04,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 11:29:04,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:04,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-12 11:29:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:04,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:04,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:04,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 11:29:04,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:04,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 11:29:04,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:04,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:04,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:04,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 11:29:04,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:04,549 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 216 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-12 11:29:04,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591036161] [2020-10-12 11:29:04,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:29:04,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:29:04,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242387440] [2020-10-12 11:29:04,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:29:04,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:29:04,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:29:04,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:29:04,552 INFO L87 Difference]: Start difference. First operand 64445 states and 100316 transitions. Second operand 7 states. [2020-10-12 11:29:04,757 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:29:06,197 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:29:08,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:29:08,795 INFO L93 Difference]: Finished difference Result 150920 states and 242524 transitions. [2020-10-12 11:29:08,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:29:08,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 311 [2020-10-12 11:29:08,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:29:09,097 INFO L225 Difference]: With dead ends: 150920 [2020-10-12 11:29:09,097 INFO L226 Difference]: Without dead ends: 88246 [2020-10-12 11:29:09,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:29:09,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88246 states. [2020-10-12 11:29:13,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88246 to 87027. [2020-10-12 11:29:13,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87027 states. [2020-10-12 11:29:13,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87027 states to 87027 states and 132423 transitions. [2020-10-12 11:29:13,907 INFO L78 Accepts]: Start accepts. Automaton has 87027 states and 132423 transitions. Word has length 311 [2020-10-12 11:29:13,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:29:13,907 INFO L479 AbstractCegarLoop]: Abstraction has 87027 states and 132423 transitions. [2020-10-12 11:29:13,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:29:13,907 INFO L276 IsEmpty]: Start isEmpty. Operand 87027 states and 132423 transitions. [2020-10-12 11:29:14,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-12 11:29:14,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:29:14,033 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:29:14,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 11:29:14,034 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:29:14,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:29:14,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1084610068, now seen corresponding path program 1 times [2020-10-12 11:29:14,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:29:14,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376677080] [2020-10-12 11:29:14,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:29:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:14,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:14,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:14,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:14,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:16,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:17,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:19,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:19,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-12 11:29:19,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 11:29:19,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-12 11:29:19,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:19,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:29:19,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:29:19,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-12 11:29:19,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:19,334 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:29:19,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:29:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:19,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:19,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:19,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:29:19,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:19,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:29:19,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:19,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:29:19,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:19,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:29:19,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:19,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:29:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:19,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:19,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:19,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 11:29:19,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:19,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-12 11:29:19,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:19,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:19,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:19,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 11:29:19,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:19,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-12 11:29:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:19,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:19,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:19,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 11:29:19,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:19,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 11:29:19,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:19,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:19,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:19,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 11:29:19,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:19,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-12 11:29:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:19,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:19,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:19,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:29:19,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:19,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 11:29:19,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:19,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:19,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:19,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:29:19,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:19,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-12 11:29:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:19,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:19,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:19,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 11:29:19,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:19,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 11:29:19,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:19,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:29:19,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 11:29:19,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:29:19,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:19,961 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 173 proven. 82 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-12 11:29:19,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376677080] [2020-10-12 11:29:19,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:29:19,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:29:19,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735645167] [2020-10-12 11:29:19,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:29:19,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:29:19,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:29:19,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:29:19,963 INFO L87 Difference]: Start difference. First operand 87027 states and 132423 transitions. Second operand 8 states. [2020-10-12 11:29:20,097 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:29:21,597 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:29:24,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:29:24,364 INFO L93 Difference]: Finished difference Result 212418 states and 335870 transitions. [2020-10-12 11:29:24,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:29:24,365 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 325 [2020-10-12 11:29:24,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:29:24,823 INFO L225 Difference]: With dead ends: 212418 [2020-10-12 11:29:24,823 INFO L226 Difference]: Without dead ends: 126093 [2020-10-12 11:29:25,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:29:25,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126093 states. [2020-10-12 11:29:27,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126093 to 125009. [2020-10-12 11:29:27,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125009 states. [2020-10-12 11:29:28,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125009 states to 125009 states and 183084 transitions. [2020-10-12 11:29:28,012 INFO L78 Accepts]: Start accepts. Automaton has 125009 states and 183084 transitions. Word has length 325 [2020-10-12 11:29:28,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:29:28,012 INFO L479 AbstractCegarLoop]: Abstraction has 125009 states and 183084 transitions. [2020-10-12 11:29:28,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:29:28,012 INFO L276 IsEmpty]: Start isEmpty. Operand 125009 states and 183084 transitions. [2020-10-12 11:29:28,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-12 11:29:28,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:29:28,156 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, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:29:28,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 11:29:28,159 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:29:28,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:29:28,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1273966182, now seen corresponding path program 1 times [2020-10-12 11:29:28,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:29:28,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821615960] [2020-10-12 11:29:28,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:29:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:28,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:28,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:28,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:32,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:32,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:33,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:33,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-12 11:29:33,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:29:33,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-12 11:29:33,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:33,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:29:33,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:29:33,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-12 11:29:33,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:33,470 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:29:33,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:29:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:33,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:33,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:33,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:29:33,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:33,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:29:33,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:29:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:29:33,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:33,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:29:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:33,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:33,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:33,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:29:33,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:33,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-12 11:29:33,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:33,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:33,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:33,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 11:29:33,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:33,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 11:29:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:33,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:33,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:33,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 11:29:33,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:33,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 11:29:33,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:33,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:33,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:33,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 11:29:33,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:34,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 11:29:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:34,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:34,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:34,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 11:29:34,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:34,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:29:34,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:34,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:29:34,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 11:29:34,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:29:34,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:34,171 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 214 proven. 46 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 11:29:34,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821615960] [2020-10-12 11:29:34,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:29:34,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:29:34,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116752526] [2020-10-12 11:29:34,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:29:34,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:29:34,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:29:34,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:29:34,173 INFO L87 Difference]: Start difference. First operand 125009 states and 183084 transitions. Second operand 8 states. [2020-10-12 11:29:34,320 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:29:39,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:29:39,202 INFO L93 Difference]: Finished difference Result 300632 states and 440873 transitions. [2020-10-12 11:29:39,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:29:39,202 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 326 [2020-10-12 11:29:39,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:29:39,904 INFO L225 Difference]: With dead ends: 300632 [2020-10-12 11:29:39,905 INFO L226 Difference]: Without dead ends: 208663 [2020-10-12 11:29:40,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-12 11:29:40,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208663 states. [2020-10-12 11:29:47,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208663 to 208153. [2020-10-12 11:29:47,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208153 states. [2020-10-12 11:29:48,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208153 states to 208153 states and 304694 transitions. [2020-10-12 11:29:48,124 INFO L78 Accepts]: Start accepts. Automaton has 208153 states and 304694 transitions. Word has length 326 [2020-10-12 11:29:48,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:29:48,125 INFO L479 AbstractCegarLoop]: Abstraction has 208153 states and 304694 transitions. [2020-10-12 11:29:48,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:29:48,125 INFO L276 IsEmpty]: Start isEmpty. Operand 208153 states and 304694 transitions. [2020-10-12 11:29:48,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-12 11:29:48,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:29:48,309 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:29:48,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 11:29:48,309 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:29:48,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:29:48,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1568490347, now seen corresponding path program 1 times [2020-10-12 11:29:48,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:29:48,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187785796] [2020-10-12 11:29:48,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:29:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:48,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:48,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:48,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:48,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:49,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:51,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:53,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:53,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-12 11:29:53,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 11:29:53,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-12 11:29:53,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:53,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:29:53,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 11:29:53,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 11:29:53,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:54,163 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:29:54,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:29:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:54,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:54,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:54,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:29:54,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:54,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:29:54,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:54,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:29:54,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:54,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:29:54,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:54,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:29:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:54,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:54,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:54,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:29:54,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:54,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-12 11:29:54,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:54,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:29:54,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:54,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 11:29:54,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:54,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 11:29:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:54,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:54,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:54,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:54,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:29:54,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:29:54,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 11:29:54,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:54,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:54,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:54,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:29:54,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:54,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-12 11:29:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:54,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:54,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:54,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:54,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 11:29:54,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:29:54,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-12 11:29:54,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:54,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:54,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:54,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 11:29:54,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:54,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-12 11:29:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:54,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:54,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:54,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:29:54,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:54,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 11:29:54,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:54,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:54,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:54,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:29:54,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:54,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-12 11:29:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:54,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:54,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:54,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 11:29:54,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:54,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 11:29:54,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:54,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:29:54,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 11:29:54,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:29:54,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:54,785 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 221 proven. 50 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-12 11:29:54,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187785796] [2020-10-12 11:29:54,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:29:54,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:29:54,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170137438] [2020-10-12 11:29:54,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:29:54,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:29:54,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:29:54,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:29:54,788 INFO L87 Difference]: Start difference. First operand 208153 states and 304694 transitions. Second operand 7 states. [2020-10-12 11:29:55,031 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 11:29:55,298 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:30:04,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:30:04,566 INFO L93 Difference]: Finished difference Result 378605 states and 554782 transitions. [2020-10-12 11:30:04,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:30:04,567 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 330 [2020-10-12 11:30:04,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:30:05,084 INFO L225 Difference]: With dead ends: 378605 [2020-10-12 11:30:05,084 INFO L226 Difference]: Without dead ends: 172012 [2020-10-12 11:30:05,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:30:05,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172012 states.