/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/Problem06_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 12:08:25,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 12:08:25,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 12:08:25,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 12:08:25,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 12:08:25,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 12:08:25,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 12:08:25,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 12:08:25,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 12:08:25,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 12:08:25,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 12:08:25,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 12:08:25,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 12:08:25,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 12:08:25,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 12:08:25,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 12:08:25,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 12:08:25,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 12:08:25,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 12:08:25,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 12:08:25,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 12:08:25,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 12:08:25,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 12:08:25,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 12:08:25,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 12:08:25,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 12:08:25,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 12:08:25,406 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 12:08:25,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 12:08:25,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 12:08:25,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 12:08:25,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 12:08:25,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 12:08:25,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 12:08:25,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 12:08:25,417 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 12:08:25,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 12:08:25,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 12:08:25,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 12:08:25,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 12:08:25,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 12:08:25,423 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 12:08:25,468 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 12:08:25,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 12:08:25,471 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 12:08:25,471 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 12:08:25,471 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 12:08:25,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 12:08:25,472 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 12:08:25,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 12:08:25,472 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 12:08:25,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 12:08:25,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 12:08:25,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 12:08:25,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 12:08:25,473 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 12:08:25,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 12:08:25,474 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 12:08:25,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 12:08:25,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 12:08:25,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 12:08:25,475 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 12:08:25,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 12:08:25,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 12:08:25,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 12:08:25,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 12:08:25,476 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 12:08:25,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 12:08:25,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 12:08:25,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 12:08:25,477 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 12:08:25,477 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 12:08:25,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 12:08:25,783 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 12:08:25,787 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 12:08:25,790 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 12:08:25,790 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 12:08:25,791 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label27.c [2020-10-12 12:08:25,868 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5332794bb/16249592da7443008200d0e3f840c783/FLAG20c1fcafb [2020-10-12 12:08:26,742 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 12:08:26,742 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label27.c [2020-10-12 12:08:26,786 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5332794bb/16249592da7443008200d0e3f840c783/FLAG20c1fcafb [2020-10-12 12:08:27,204 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5332794bb/16249592da7443008200d0e3f840c783 [2020-10-12 12:08:27,214 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 12:08:27,216 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 12:08:27,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 12:08:27,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 12:08:27,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 12:08:27,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:08:27" (1/1) ... [2020-10-12 12:08:27,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78a0aa91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:27, skipping insertion in model container [2020-10-12 12:08:27,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:08:27" (1/1) ... [2020-10-12 12:08:27,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 12:08:27,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 12:08:29,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:08:29,874 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 12:08:30,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:08:31,027 INFO L208 MainTranslator]: Completed translation [2020-10-12 12:08:31,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:31 WrapperNode [2020-10-12 12:08:31,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 12:08:31,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 12:08:31,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 12:08:31,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 12:08:31,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:31" (1/1) ... [2020-10-12 12:08:31,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:31" (1/1) ... [2020-10-12 12:08:31,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:31" (1/1) ... [2020-10-12 12:08:31,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:31" (1/1) ... [2020-10-12 12:08:31,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:31" (1/1) ... [2020-10-12 12:08:31,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:31" (1/1) ... [2020-10-12 12:08:31,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:31" (1/1) ... [2020-10-12 12:08:31,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 12:08:31,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 12:08:31,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 12:08:31,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 12:08:31,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:31" (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 12:08:31,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 12:08:31,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 12:08:31,605 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 12:08:31,605 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 12:08:31,605 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 12:08:31,605 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 12:08:31,605 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 12:08:31,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 12:08:31,607 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 12:08:31,607 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 12:08:31,607 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 12:08:31,607 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 12:08:31,607 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 12:08:31,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 12:08:31,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 12:08:31,609 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 12:08:31,609 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 12:08:31,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 12:08:31,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 12:08:38,334 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 12:08:38,334 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 12:08:38,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:08:38 BoogieIcfgContainer [2020-10-12 12:08:38,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 12:08:38,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 12:08:38,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 12:08:38,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 12:08:38,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:08:27" (1/3) ... [2020-10-12 12:08:38,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@673aaf9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:08:38, skipping insertion in model container [2020-10-12 12:08:38,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:31" (2/3) ... [2020-10-12 12:08:38,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@673aaf9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:08:38, skipping insertion in model container [2020-10-12 12:08:38,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:08:38" (3/3) ... [2020-10-12 12:08:38,359 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label27.c [2020-10-12 12:08:38,370 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 12:08:38,385 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 12:08:38,399 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 12:08:38,435 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 12:08:38,435 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 12:08:38,435 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 12:08:38,435 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 12:08:38,435 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 12:08:38,436 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 12:08:38,436 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 12:08:38,436 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 12:08:38,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-12 12:08:38,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 962 [2020-10-12 12:08:38,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:08:38,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:08:38,549 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:08:38,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:08:38,555 INFO L82 PathProgramCache]: Analyzing trace with hash 946646064, now seen corresponding path program 1 times [2020-10-12 12:08:38,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:08:38,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348068600] [2020-10-12 12:08:38,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:08:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:08:40,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:08:42,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:08:44,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:08:44,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 977 [2020-10-12 12:08:44,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:08:44,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-12 12:08:44,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:08:44,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 12:08:44,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:08:44,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-12 12:08:44,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 12:08:53,048 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-12 12:08:53,318 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2020-10-12 12:08:53,718 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 93 [2020-10-12 12:08:54,075 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 93 [2020-10-12 12:08:54,466 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 93 [2020-10-12 12:08:54,844 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 88 [2020-10-12 12:08:55,144 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 80 [2020-10-12 12:08:55,610 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 81 [2020-10-12 12:08:55,996 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 80 [2020-10-12 12:08:56,334 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 67 [2020-10-12 12:08:56,590 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2020-10-12 12:08:56,847 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2020-10-12 12:08:57,065 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2020-10-12 12:08:57,303 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2020-10-12 12:08:57,544 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 63 [2020-10-12 12:08:57,885 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 61 [2020-10-12 12:08:58,053 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:08:58,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:08:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:08:58,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:08:58,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:08:58,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:08:58,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:08:58,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 12:08:58,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:08:58,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:08:58,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:08:58,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:08:58,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:09:12,923 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 12:09:12,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348068600] [2020-10-12 12:09:12,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 12:09:12,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-12 12:09:12,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045055123] [2020-10-12 12:09:12,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 12:09:12,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:09:12,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 12:09:12,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-12 12:09:12,953 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 19 states. [2020-10-12 12:09:13,432 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-12 12:09:14,334 WARN L193 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 190 [2020-10-12 12:09:15,192 WARN L193 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 190 [2020-10-12 12:09:16,285 WARN L193 SmtUtils]: Spent 966.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 208 [2020-10-12 12:09:21,247 WARN L193 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 207 [2020-10-12 12:09:25,447 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 227 DAG size of output: 204 [2020-10-12 12:09:28,722 WARN L193 SmtUtils]: Spent 824.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 186 [2020-10-12 12:09:29,748 WARN L193 SmtUtils]: Spent 929.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 198 [2020-10-12 12:09:31,529 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 216 DAG size of output: 193 [2020-10-12 12:09:43,219 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 177 [2020-10-12 12:09:44,102 WARN L193 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 184 [2020-10-12 12:09:47,804 WARN L193 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 183 [2020-10-12 12:09:56,798 WARN L193 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 175 [2020-10-12 12:09:57,776 WARN L193 SmtUtils]: Spent 840.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 182 [2020-10-12 12:10:01,094 WARN L193 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 179 [2020-10-12 12:10:17,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:10:17,232 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-12 12:10:17,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 12:10:17,234 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 961 [2020-10-12 12:10:17,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:10:17,275 INFO L225 Difference]: With dead ends: 3396 [2020-10-12 12:10:17,275 INFO L226 Difference]: Without dead ends: 2019 [2020-10-12 12:10:17,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=171, Invalid=951, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 12:10:17,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-12 12:10:17,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-12 12:10:17,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-12 12:10:17,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-12 12:10:17,461 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 961 [2020-10-12 12:10:17,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:10:17,464 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-12 12:10:17,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 12:10:17,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-12 12:10:17,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1032 [2020-10-12 12:10:17,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:10:17,500 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:10:17,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 12:10:17,500 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:10:17,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:10:17,501 INFO L82 PathProgramCache]: Analyzing trace with hash 693979837, now seen corresponding path program 1 times [2020-10-12 12:10:17,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:10:17,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581502201] [2020-10-12 12:10:17,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:10:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:10:18,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:10:19,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:10:22,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:10:22,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1049 [2020-10-12 12:10:22,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:10:22,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 12:10:22,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:10:22,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 12:10:22,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-12 12:10:22,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 968 [2020-10-12 12:10:22,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:10:24,203 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:10:24,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:10:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:10:24,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:10:24,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:10:24,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:10:24,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:10:24,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 12:10:24,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:10:24,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:10:24,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:10:24,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:10:24,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:10:24,355 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-12 12:10:24,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:10:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:10:24,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:10:24,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:10:24,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:10:24,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:10:24,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-12 12:10:24,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:10:24,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:10:24,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:10:24,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 12:10:24,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 12:10:25,749 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 66 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 12:10:25,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581502201] [2020-10-12 12:10:25,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:10:25,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 12:10:25,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072724053] [2020-10-12 12:10:25,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 12:10:25,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:10:25,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 12:10:25,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 12:10:25,755 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 5 states. [2020-10-12 12:10:26,255 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:10:42,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:10:42,983 INFO L93 Difference]: Finished difference Result 4397 states and 7435 transitions. [2020-10-12 12:10:42,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 12:10:42,984 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1031 [2020-10-12 12:10:42,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:10:43,004 INFO L225 Difference]: With dead ends: 4397 [2020-10-12 12:10:43,005 INFO L226 Difference]: Without dead ends: 3138 [2020-10-12 12:10:43,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 12:10:43,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2020-10-12 12:10:43,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 3087. [2020-10-12 12:10:43,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3087 states. [2020-10-12 12:10:43,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3087 states to 3087 states and 4566 transitions. [2020-10-12 12:10:43,099 INFO L78 Accepts]: Start accepts. Automaton has 3087 states and 4566 transitions. Word has length 1031 [2020-10-12 12:10:43,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:10:43,101 INFO L479 AbstractCegarLoop]: Abstraction has 3087 states and 4566 transitions. [2020-10-12 12:10:43,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 12:10:43,101 INFO L276 IsEmpty]: Start isEmpty. Operand 3087 states and 4566 transitions. [2020-10-12 12:10:43,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1041 [2020-10-12 12:10:43,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:10:43,119 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:10:43,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 12:10:43,119 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:10:43,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:10:43,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1419280278, now seen corresponding path program 1 times [2020-10-12 12:10:43,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:10:43,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725571823] [2020-10-12 12:10:43,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:10:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:10:43,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:10:43,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:10:46,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:10:48,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:10:48,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1060 [2020-10-12 12:10:48,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:10:48,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5174 [2020-10-12 12:10:48,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:10:48,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 12:10:48,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:10:48,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 12:10:48,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:10:49,104 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:10:49,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:10:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:10:49,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:10:49,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:10:49,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:10:49,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:10:49,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 12:10:49,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:10:49,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:10:49,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:10:49,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:10:49,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:10:49,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:10:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:10:49,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:10:49,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:10:49,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:10:49,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:10:49,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-12 12:10:49,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:10:49,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:10:49,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:10:49,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:10:49,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:10:49,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:10:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:10:49,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:10:49,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:10:49,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 12:10:49,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:10:49,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 12:10:49,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:10:49,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:10:49,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:10:49,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 12:10:49,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-12 12:10:50,356 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 74 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 12:10:50,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725571823] [2020-10-12 12:10:50,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:10:50,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 12:10:50,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803716090] [2020-10-12 12:10:50,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 12:10:50,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:10:50,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 12:10:50,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-12 12:10:50,360 INFO L87 Difference]: Start difference. First operand 3087 states and 4566 transitions. Second operand 9 states. [2020-10-12 12:10:50,540 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 12:10:51,199 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-12 12:10:52,153 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:11:18,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:11:18,497 INFO L93 Difference]: Finished difference Result 9962 states and 16068 transitions. [2020-10-12 12:11:18,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 12:11:18,499 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1040 [2020-10-12 12:11:18,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:11:18,548 INFO L225 Difference]: With dead ends: 9962 [2020-10-12 12:11:18,548 INFO L226 Difference]: Without dead ends: 7635 [2020-10-12 12:11:18,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-12 12:11:18,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7635 states. [2020-10-12 12:11:18,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7635 to 7448. [2020-10-12 12:11:18,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7448 states. [2020-10-12 12:11:18,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7448 states to 7448 states and 10903 transitions. [2020-10-12 12:11:18,813 INFO L78 Accepts]: Start accepts. Automaton has 7448 states and 10903 transitions. Word has length 1040 [2020-10-12 12:11:18,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:11:18,814 INFO L479 AbstractCegarLoop]: Abstraction has 7448 states and 10903 transitions. [2020-10-12 12:11:18,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 12:11:18,814 INFO L276 IsEmpty]: Start isEmpty. Operand 7448 states and 10903 transitions. [2020-10-12 12:11:18,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1053 [2020-10-12 12:11:18,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:11:18,856 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:11:18,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 12:11:18,857 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:11:18,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:11:18,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1368138663, now seen corresponding path program 1 times [2020-10-12 12:11:18,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:11:18,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482965191] [2020-10-12 12:11:18,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:11:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:11:19,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:11:19,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:11:19,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:11:24,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:11:24,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1074 [2020-10-12 12:11:24,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:11:24,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5207 [2020-10-12 12:11:24,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:11:24,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 12:11:24,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:11:24,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 12:11:24,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 12:11:24,623 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:11:24,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:11:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:11:24,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:11:24,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:11:24,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:11:24,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:11:24,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 12:11:24,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:11:24,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:11:24,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:11:24,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:11:24,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:11:24,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:11:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:11:24,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:11:24,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:11:24,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:11:24,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:11:24,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-12 12:11:24,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:11:24,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:11:24,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:11:24,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:11:24,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:11:25,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:11:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:11:25,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:11:25,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:11:25,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 12:11:25,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:11:25,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 12:11:25,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:11:25,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:11:25,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 12:11:25,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:11:25,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:11:25,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 12:11:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:11:25,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:11:25,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:11:25,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 12:11:25,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:11:25,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 12:11:25,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:11:25,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:11:25,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 12:11:25,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:11:25,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:11:26,626 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 82 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-12 12:11:26,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482965191] [2020-10-12 12:11:26,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:11:26,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 12:11:26,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384478762] [2020-10-12 12:11:26,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 12:11:26,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:11:26,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 12:11:26,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 12:11:26,629 INFO L87 Difference]: Start difference. First operand 7448 states and 10903 transitions. Second operand 8 states. [2020-10-12 12:11:26,821 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 12:11:28,094 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-12 12:11:28,775 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-12 12:12:08,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:12:08,501 INFO L93 Difference]: Finished difference Result 27867 states and 43854 transitions. [2020-10-12 12:12:08,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 12:12:08,502 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1052 [2020-10-12 12:12:08,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:12:08,600 INFO L225 Difference]: With dead ends: 27867 [2020-10-12 12:12:08,601 INFO L226 Difference]: Without dead ends: 21179 [2020-10-12 12:12:08,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-12 12:12:08,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21179 states. [2020-10-12 12:12:09,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21179 to 20934. [2020-10-12 12:12:09,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20934 states. [2020-10-12 12:12:09,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20934 states to 20934 states and 30207 transitions. [2020-10-12 12:12:09,223 INFO L78 Accepts]: Start accepts. Automaton has 20934 states and 30207 transitions. Word has length 1052 [2020-10-12 12:12:09,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:12:09,224 INFO L479 AbstractCegarLoop]: Abstraction has 20934 states and 30207 transitions. [2020-10-12 12:12:09,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 12:12:09,224 INFO L276 IsEmpty]: Start isEmpty. Operand 20934 states and 30207 transitions. [2020-10-12 12:12:09,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1092 [2020-10-12 12:12:09,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:12:09,303 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:09,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 12:12:09,304 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:12:09,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:12:09,304 INFO L82 PathProgramCache]: Analyzing trace with hash -625871601, now seen corresponding path program 1 times [2020-10-12 12:12:09,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:12:09,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550058035] [2020-10-12 12:12:09,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:12:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:12:09,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:12:09,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking...