/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_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 12:11:06,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 12:11:06,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 12:11:06,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 12:11:06,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 12:11:06,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 12:11:06,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 12:11:06,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 12:11:06,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 12:11:06,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 12:11:06,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 12:11:06,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 12:11:06,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 12:11:06,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 12:11:06,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 12:11:06,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 12:11:06,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 12:11:06,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 12:11:06,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 12:11:06,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 12:11:06,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 12:11:06,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 12:11:06,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 12:11:06,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 12:11:06,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 12:11:06,692 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 12:11:06,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 12:11:06,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 12:11:06,693 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 12:11:06,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 12:11:06,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 12:11:06,695 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 12:11:06,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 12:11:06,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 12:11:06,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 12:11:06,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 12:11:06,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 12:11:06,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 12:11:06,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 12:11:06,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 12:11:06,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 12:11:06,700 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 12:11:06,723 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 12:11:06,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 12:11:06,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 12:11:06,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 12:11:06,725 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 12:11:06,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 12:11:06,725 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 12:11:06,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 12:11:06,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 12:11:06,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 12:11:06,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 12:11:06,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 12:11:06,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 12:11:06,727 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 12:11:06,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 12:11:06,727 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 12:11:06,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 12:11:06,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 12:11:06,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 12:11:06,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 12:11:06,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 12:11:06,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 12:11:06,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 12:11:06,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 12:11:06,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 12:11:06,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 12:11:06,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 12:11:06,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 12:11:06,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 12:11:06,730 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 12:11:07,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 12:11:07,032 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 12:11:07,035 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 12:11:07,037 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 12:11:07,037 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 12:11:07,038 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label30.c [2020-10-12 12:11:07,105 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75242ff1f/33aa18190b504caca4875336c5eb10fd/FLAG49c4964e8 [2020-10-12 12:11:07,964 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 12:11:07,965 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label30.c [2020-10-12 12:11:08,009 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75242ff1f/33aa18190b504caca4875336c5eb10fd/FLAG49c4964e8 [2020-10-12 12:11:08,374 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75242ff1f/33aa18190b504caca4875336c5eb10fd [2020-10-12 12:11:08,384 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 12:11:08,386 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 12:11:08,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 12:11:08,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 12:11:08,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 12:11:08,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:11:08" (1/1) ... [2020-10-12 12:11:08,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ff1ef1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:08, skipping insertion in model container [2020-10-12 12:11:08,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:11:08" (1/1) ... [2020-10-12 12:11:08,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 12:11:08,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 12:11:11,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:11:11,052 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 12:11:12,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:11:12,441 INFO L208 MainTranslator]: Completed translation [2020-10-12 12:11:12,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:12 WrapperNode [2020-10-12 12:11:12,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 12:11:12,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 12:11:12,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 12:11:12,444 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 12:11:12,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:12" (1/1) ... [2020-10-12 12:11:12,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:12" (1/1) ... [2020-10-12 12:11:12,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:12" (1/1) ... [2020-10-12 12:11:12,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:12" (1/1) ... [2020-10-12 12:11:12,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:12" (1/1) ... [2020-10-12 12:11:12,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:12" (1/1) ... [2020-10-12 12:11:12,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:12" (1/1) ... [2020-10-12 12:11:12,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 12:11:12,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 12:11:12,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 12:11:12,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 12:11:12,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:12" (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 12:11:12,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 12:11:12,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 12:11:12,895 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 12:11:12,895 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 12:11:12,896 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 12:11:12,896 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 12:11:12,897 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 12:11:12,897 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 12:11:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 12:11:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 12:11:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 12:11:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 12:11:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 12:11:12,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 12:11:12,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 12:11:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 12:11:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 12:11:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 12:11:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 12:11:19,831 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 12:11:19,831 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 12:11:19,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:11:19 BoogieIcfgContainer [2020-10-12 12:11:19,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 12:11:19,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 12:11:19,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 12:11:19,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 12:11:19,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:11:08" (1/3) ... [2020-10-12 12:11:19,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361b16ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:11:19, skipping insertion in model container [2020-10-12 12:11:19,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:11:12" (2/3) ... [2020-10-12 12:11:19,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361b16ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:11:19, skipping insertion in model container [2020-10-12 12:11:19,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:11:19" (3/3) ... [2020-10-12 12:11:19,857 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label30.c [2020-10-12 12:11:19,868 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 12:11:19,877 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 12:11:19,891 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 12:11:19,920 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 12:11:19,921 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 12:11:19,921 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 12:11:19,921 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 12:11:19,921 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 12:11:19,921 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 12:11:19,921 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 12:11:19,922 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 12:11:19,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-12 12:11:20,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 975 [2020-10-12 12:11:20,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:11:20,010 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:11:20,011 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:11:20,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:11:20,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1020336657, now seen corresponding path program 1 times [2020-10-12 12:11:20,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:11:20,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672847009] [2020-10-12 12:11:20,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:11:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:11:21,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:11:23,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:11:26,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:11:26,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 990 [2020-10-12 12:11:26,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:11:26,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5432 [2020-10-12 12:11:26,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:11:26,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 12:11:26,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:11:26,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-12 12:11:26,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 12:11:31,844 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2020-10-12 12:11:32,249 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-10-12 12:11:32,546 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-10-12 12:11:32,825 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-10-12 12:11:33,121 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 83 [2020-10-12 12:11:33,468 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 79 [2020-10-12 12:11:33,908 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 82 [2020-10-12 12:11:34,331 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 87 [2020-10-12 12:11:34,606 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 64 [2020-10-12 12:11:34,795 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-12 12:11:34,966 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-12 12:11:35,462 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:11:35,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:11:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:11:35,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:11:35,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:11:35,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:11:35,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:11:35,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 12:11:35,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:11:35,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:11:35,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:11:35,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:11:35,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:11:47,636 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 12:11:47,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672847009] [2020-10-12 12:11:47,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 12:11:47,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-12 12:11:47,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499075807] [2020-10-12 12:11:47,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 12:11:47,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:11:47,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 12:11:47,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-12 12:11:47,661 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 19 states. [2020-10-12 12:11:48,099 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-12 12:11:48,894 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 180 [2020-10-12 12:11:49,660 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 180 [2020-10-12 12:11:50,529 WARN L193 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 188 [2020-10-12 12:11:54,776 WARN L193 SmtUtils]: Spent 725.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 186 [2020-10-12 12:11:58,485 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 206 DAG size of output: 185 [2020-10-12 12:12:01,122 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 176 [2020-10-12 12:12:02,022 WARN L193 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 181 [2020-10-12 12:12:03,567 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 226 DAG size of output: 175 [2020-10-12 12:12:13,360 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 170 [2020-10-12 12:12:14,217 WARN L193 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 175 [2020-10-12 12:12:17,390 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 174 [2020-10-12 12:12:25,246 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 168 [2020-10-12 12:12:26,109 WARN L193 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 172 [2020-10-12 12:12:28,902 WARN L193 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 170 [2020-10-12 12:12:42,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:12:42,282 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-12 12:12:42,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 12:12:42,286 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 974 [2020-10-12 12:12:42,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:12:42,341 INFO L225 Difference]: With dead ends: 3396 [2020-10-12 12:12:42,341 INFO L226 Difference]: Without dead ends: 2019 [2020-10-12 12:12:42,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=172, Invalid=950, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 12:12:42,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-12 12:12:42,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-12 12:12:42,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-12 12:12:42,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-12 12:12:42,513 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 974 [2020-10-12 12:12:42,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:12:42,522 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-12 12:12:42,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 12:12:42,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-12 12:12:42,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1045 [2020-10-12 12:12:42,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:12:42,563 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:12:42,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 12:12:42,565 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:12:42,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:12:42,566 INFO L82 PathProgramCache]: Analyzing trace with hash 567743618, now seen corresponding path program 1 times [2020-10-12 12:12:42,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:12:42,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643792539] [2020-10-12 12:12:42,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:12:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:12:43,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:12:46,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:12:48,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:12:48,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1062 [2020-10-12 12:12:48,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:12:48,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5208 [2020-10-12 12:12:48,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:12:48,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 12:12:48,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-12 12:12:48,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 981 [2020-10-12 12:12:48,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:12:49,128 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:12:49,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:12:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:12:49,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:12:49,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:12:49,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:12:49,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:12:49,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 12:12:49,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:12:49,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:12:49,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:12:49,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:12:49,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:12:49,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:12:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:12:49,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:12:49,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:12:49,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:12:49,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:12:49,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-12 12:12:49,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:12:49,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:12:49,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:12:49,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 12:12:49,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:12:50,379 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 12:12:50,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643792539] [2020-10-12 12:12:50,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:12:50,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 12:12:50,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917453547] [2020-10-12 12:12:50,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 12:12:50,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:12:50,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 12:12:50,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 12:12:50,384 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 5 states. [2020-10-12 12:12:50,823 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:13:06,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:13:06,650 INFO L93 Difference]: Finished difference Result 4397 states and 7435 transitions. [2020-10-12 12:13:06,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 12:13:06,652 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1044 [2020-10-12 12:13:06,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:13:06,670 INFO L225 Difference]: With dead ends: 4397 [2020-10-12 12:13:06,670 INFO L226 Difference]: Without dead ends: 3138 [2020-10-12 12:13:06,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 12:13:06,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2020-10-12 12:13:06,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 3087. [2020-10-12 12:13:06,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3087 states. [2020-10-12 12:13:06,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3087 states to 3087 states and 4566 transitions. [2020-10-12 12:13:06,764 INFO L78 Accepts]: Start accepts. Automaton has 3087 states and 4566 transitions. Word has length 1044 [2020-10-12 12:13:06,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:13:06,766 INFO L479 AbstractCegarLoop]: Abstraction has 3087 states and 4566 transitions. [2020-10-12 12:13:06,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 12:13:06,766 INFO L276 IsEmpty]: Start isEmpty. Operand 3087 states and 4566 transitions. [2020-10-12 12:13:06,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1054 [2020-10-12 12:13:06,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:13:06,814 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:13:06,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 12:13:06,815 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:13:06,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:13:06,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1303134197, now seen corresponding path program 1 times [2020-10-12 12:13:06,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:13:06,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299671923] [2020-10-12 12:13:06,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:13:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:07,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:07,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:12,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:12,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1073 [2020-10-12 12:13:12,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:13:12,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5198 [2020-10-12 12:13:12,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:12,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 12:13:12,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:13:12,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 12:13:12,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:12,475 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:13:12,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:13:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:12,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:12,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:12,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:13:12,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:12,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 12:13:12,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:12,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:13:12,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:13:12,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:13:12,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:12,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:13:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:12,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:12,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:12,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:13:12,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:12,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-12 12:13:12,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:12,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:13:12,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:13:12,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:13:12,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:13,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:13:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:13,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:13,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:13,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 12:13:13,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:13,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 12:13:13,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:13,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:13:13,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 12:13:13,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:13:13,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:14,058 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 73 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 12:13:14,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299671923] [2020-10-12 12:13:14,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:13:14,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 12:13:14,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881365276] [2020-10-12 12:13:14,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 12:13:14,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:13:14,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 12:13:14,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 12:13:14,072 INFO L87 Difference]: Start difference. First operand 3087 states and 4566 transitions. Second operand 7 states. [2020-10-12 12:13:14,228 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 12:13:15,376 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-12 12:13:36,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:13:36,218 INFO L93 Difference]: Finished difference Result 7685 states and 12123 transitions. [2020-10-12 12:13:36,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 12:13:36,219 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1053 [2020-10-12 12:13:36,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:13:36,246 INFO L225 Difference]: With dead ends: 7685 [2020-10-12 12:13:36,246 INFO L226 Difference]: Without dead ends: 5358 [2020-10-12 12:13:36,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 12:13:36,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5358 states. [2020-10-12 12:13:36,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5358 to 5274. [2020-10-12 12:13:36,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5274 states. [2020-10-12 12:13:36,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5274 states to 5274 states and 7501 transitions. [2020-10-12 12:13:36,516 INFO L78 Accepts]: Start accepts. Automaton has 5274 states and 7501 transitions. Word has length 1053 [2020-10-12 12:13:36,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:13:36,517 INFO L479 AbstractCegarLoop]: Abstraction has 5274 states and 7501 transitions. [2020-10-12 12:13:36,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 12:13:36,517 INFO L276 IsEmpty]: Start isEmpty. Operand 5274 states and 7501 transitions. [2020-10-12 12:13:36,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1097 [2020-10-12 12:13:36,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:13:36,549 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 12:13:36,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 12:13:36,549 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:13:36,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:13:36,550 INFO L82 PathProgramCache]: Analyzing trace with hash -958412923, now seen corresponding path program 1 times [2020-10-12 12:13:36,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:13:36,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105240952] [2020-10-12 12:13:36,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:13:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:37,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:38,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:42,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:42,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1114 [2020-10-12 12:13:42,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:13:42,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5117 [2020-10-12 12:13:42,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:42,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 12:13:42,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:13:42,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 552 [2020-10-12 12:13:42,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:43,391 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2020-10-12 12:13:43,575 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2020-10-12 12:13:43,743 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2020-10-12 12:13:43,908 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-10-12 12:13:44,051 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-12 12:13:44,193 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-10-12 12:13:44,485 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-10-12 12:13:44,969 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:13:44,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:13:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:44,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:44,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:44,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:13:44,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:44,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 12:13:44,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:44,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:13:44,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:13:44,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:13:44,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:45,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:13:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:13:45,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:13:45,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:13:45,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 12:13:45,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:13:45,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-12 12:13:45,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:13:45,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 12:13:45,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:13:45,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-12 12:13:45,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:13:53,141 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 12:13:53,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105240952] [2020-10-12 12:13:53,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:13:53,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 12:13:53,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875793370] [2020-10-12 12:13:53,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 12:13:53,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:13:53,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 12:13:53,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-10-12 12:13:53,144 INFO L87 Difference]: Start difference. First operand 5274 states and 7501 transitions. Second operand 19 states. [2020-10-12 12:13:53,471 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-12 12:13:55,844 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 81 [2020-10-12 12:13:56,170 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2020-10-12 12:13:56,561 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 85 [2020-10-12 12:13:57,300 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 173 [2020-10-12 12:13:58,110 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 181 [2020-10-12 12:13:59,869 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 202 DAG size of output: 180 [2020-10-12 12:14:03,427 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 204 DAG size of output: 179 [2020-10-12 12:14:13,179 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 169 [2020-10-12 12:14:13,988 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 175 [2020-10-12 12:14:15,467 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 174 [2020-10-12 12:14:26,370 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 192 DAG size of output: 173 [2020-10-12 12:14:27,612 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 171 [2020-10-12 12:14:55,673 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-10-12 12:14:55,983 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2020-10-12 12:14:56,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:14:56,022 INFO L93 Difference]: Finished difference Result 14814 states and 22171 transitions. [2020-10-12 12:14:56,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 12:14:56,024 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 1096 [2020-10-12 12:14:56,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:14:56,071 INFO L225 Difference]: With dead ends: 14814 [2020-10-12 12:14:56,072 INFO L226 Difference]: Without dead ends: 10300 [2020-10-12 12:14:56,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=259, Invalid=931, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 12:14:56,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10300 states. [2020-10-12 12:14:56,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10300 to 10227. [2020-10-12 12:14:56,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10227 states. [2020-10-12 12:14:56,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10227 states to 10227 states and 14717 transitions. [2020-10-12 12:14:56,364 INFO L78 Accepts]: Start accepts. Automaton has 10227 states and 14717 transitions. Word has length 1096 [2020-10-12 12:14:56,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:14:56,365 INFO L479 AbstractCegarLoop]: Abstraction has 10227 states and 14717 transitions. [2020-10-12 12:14:56,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 12:14:56,365 INFO L276 IsEmpty]: Start isEmpty. Operand 10227 states and 14717 transitions. [2020-10-12 12:14:56,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1122 [2020-10-12 12:14:56,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:14:56,416 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 12:14:56,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 12:14:56,416 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:14:56,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:14:56,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1479589646, now seen corresponding path program 1 times [2020-10-12 12:14:56,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:14:56,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808886912] [2020-10-12 12:14:56,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:14:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:14:56,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking...