/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/Problem17_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:07:51,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:07:51,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:07:51,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:07:51,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:07:51,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:07:51,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:07:51,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:07:51,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:07:51,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:07:51,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:07:51,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:07:51,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:07:51,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:07:51,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:07:51,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:07:51,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:07:51,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:07:51,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:07:51,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:07:51,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:07:51,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:07:51,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:07:51,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:07:51,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:07:51,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:07:51,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:07:51,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:07:51,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:07:51,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:07:51,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:07:51,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:07:51,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:07:51,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:07:51,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:07:51,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:07:51,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:07:51,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:07:51,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:07:51,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:07:51,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:07:51,997 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 [2020-10-14 04:07:52,037 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:07:52,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:07:52,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:07:52,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:07:52,040 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:07:52,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:07:52,041 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:07:52,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:07:52,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:07:52,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:07:52,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:07:52,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:07:52,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:07:52,043 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:07:52,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:07:52,044 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:07:52,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:07:52,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:07:52,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:07:52,045 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:07:52,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:07:52,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:07:52,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:07:52,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:07:52,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:07:52,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:07:52,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:07:52,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:07:52,047 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:07:52,047 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:07:52,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:07:52,421 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:07:52,426 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:07:52,428 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:07:52,428 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:07:52,429 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label53.c [2020-10-14 04:07:52,517 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f353f5afa/fb68f6e06d8a42b597986a855d41f3d0/FLAG403a9a947 [2020-10-14 04:07:53,208 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:07:53,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label53.c [2020-10-14 04:07:53,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f353f5afa/fb68f6e06d8a42b597986a855d41f3d0/FLAG403a9a947 [2020-10-14 04:07:53,348 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f353f5afa/fb68f6e06d8a42b597986a855d41f3d0 [2020-10-14 04:07:53,361 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:07:53,364 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:07:53,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:07:53,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:07:53,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:07:53,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:07:53" (1/1) ... [2020-10-14 04:07:53,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12925ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:53, skipping insertion in model container [2020-10-14 04:07:53,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:07:53" (1/1) ... [2020-10-14 04:07:53,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:07:53,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:07:54,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:07:54,811 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:07:55,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:07:55,403 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:07:55,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:55 WrapperNode [2020-10-14 04:07:55,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:07:55,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:07:55,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:07:55,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:07:55,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:55" (1/1) ... [2020-10-14 04:07:55,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:55" (1/1) ... [2020-10-14 04:07:55,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:55" (1/1) ... [2020-10-14 04:07:55,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:55" (1/1) ... [2020-10-14 04:07:55,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:55" (1/1) ... [2020-10-14 04:07:55,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:55" (1/1) ... [2020-10-14 04:07:55,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:55" (1/1) ... [2020-10-14 04:07:55,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:07:55,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:07:55,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:07:55,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:07:55,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:55" (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 [2020-10-14 04:07:55,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:07:55,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:07:55,779 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:07:55,779 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:07:55,779 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:07:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:07:55,780 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:07:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:07:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:07:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:07:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:07:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:07:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:08:04,776 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:08:04,777 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:08:04,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:08:04 BoogieIcfgContainer [2020-10-14 04:08:04,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:08:04,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:08:04,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:08:04,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:08:04,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:07:53" (1/3) ... [2020-10-14 04:08:04,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e118413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:08:04, skipping insertion in model container [2020-10-14 04:08:04,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:55" (2/3) ... [2020-10-14 04:08:04,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e118413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:08:04, skipping insertion in model container [2020-10-14 04:08:04,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:08:04" (3/3) ... [2020-10-14 04:08:04,799 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label53.c [2020-10-14 04:08:04,812 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:08:04,823 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:08:04,839 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:08:04,870 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:08:04,870 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:08:04,871 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:08:04,871 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:08:04,871 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:08:04,871 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:08:04,871 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:08:04,871 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:08:04,906 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 04:08:04,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 04:08:04,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:08:04,916 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] [2020-10-14 04:08:04,916 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:08:04,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:08:04,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1609559313, now seen corresponding path program 1 times [2020-10-14 04:08:04,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:08:04,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553033762] [2020-10-14 04:08:04,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:08:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:05,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:05,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:05,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 04:08:05,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:05,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-14 04:08:05,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:05,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:05,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:08:05,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:08:05,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 04:08:05,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:08:05,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:08:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:05,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:05,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:05,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:08:05,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:05,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 04:08:05,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:05,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:05,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:08:05,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:05,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:08:05,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 04:08:05,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:08:05,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553033762] [2020-10-14 04:08:05,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:08:05,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:08:05,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706737521] [2020-10-14 04:08:05,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:08:05,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:08:05,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:08:05,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:08:05,749 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 04:08:18,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:08:18,180 INFO L93 Difference]: Finished difference Result 1689 states and 3086 transitions. [2020-10-14 04:08:18,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:08:18,183 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-14 04:08:18,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:08:18,208 INFO L225 Difference]: With dead ends: 1689 [2020-10-14 04:08:18,208 INFO L226 Difference]: Without dead ends: 1009 [2020-10-14 04:08:18,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:08:18,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-14 04:08:18,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 991. [2020-10-14 04:08:18,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-10-14 04:08:18,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1526 transitions. [2020-10-14 04:08:18,353 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1526 transitions. Word has length 20 [2020-10-14 04:08:18,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:08:18,354 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1526 transitions. [2020-10-14 04:08:18,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:08:18,354 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1526 transitions. [2020-10-14 04:08:18,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 04:08:18,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:08:18,366 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:08:18,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:08:18,367 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:08:18,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:08:18,368 INFO L82 PathProgramCache]: Analyzing trace with hash 965575804, now seen corresponding path program 1 times [2020-10-14 04:08:18,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:08:18,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092636849] [2020-10-14 04:08:18,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:08:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:18,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:18,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:19,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:19,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 04:08:19,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:08:19,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1045 [2020-10-14 04:08:19,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:19,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:19,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:08:19,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:08:19,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 04:08:19,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:19,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:08:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:19,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:19,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:19,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:08:19,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:19,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:08:19,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:19,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:19,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:08:19,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:19,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:08:19,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:08:19,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:08:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:19,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:19,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:19,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:08:19,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:19,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 04:08:19,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:19,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:19,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:08:19,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:19,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:08:19,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 04:08:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:08:19,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092636849] [2020-10-14 04:08:19,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:08:19,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:08:19,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664052736] [2020-10-14 04:08:19,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:08:19,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:08:19,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:08:19,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:08:19,806 INFO L87 Difference]: Start difference. First operand 991 states and 1526 transitions. Second operand 5 states. [2020-10-14 04:08:33,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:08:33,841 INFO L93 Difference]: Finished difference Result 2864 states and 4440 transitions. [2020-10-14 04:08:33,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:08:33,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-14 04:08:33,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:08:33,851 INFO L225 Difference]: With dead ends: 2864 [2020-10-14 04:08:33,852 INFO L226 Difference]: Without dead ends: 1879 [2020-10-14 04:08:33,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:08:33,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2020-10-14 04:08:33,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1875. [2020-10-14 04:08:33,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1875 states. [2020-10-14 04:08:33,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 2566 transitions. [2020-10-14 04:08:33,943 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 2566 transitions. Word has length 91 [2020-10-14 04:08:33,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:08:33,944 INFO L479 AbstractCegarLoop]: Abstraction has 1875 states and 2566 transitions. [2020-10-14 04:08:33,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:08:33,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 2566 transitions. [2020-10-14 04:08:33,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 04:08:33,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:08:33,956 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:08:33,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:08:33,957 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:08:33,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:08:33,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1689652664, now seen corresponding path program 1 times [2020-10-14 04:08:33,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:08:33,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201023353] [2020-10-14 04:08:33,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:08:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:34,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:34,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:34,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 04:08:34,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:34,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-14 04:08:34,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:34,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:08:34,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:08:34,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 04:08:34,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:08:34,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:08:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:34,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:34,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:34,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:08:34,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:34,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:08:34,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:34,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:34,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:08:34,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:34,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:08:34,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:34,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:08:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:34,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:34,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:34,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:08:34,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:34,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 04:08:34,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:34,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:34,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:08:34,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:34,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:08:34,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:34,589 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:08:34,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201023353] [2020-10-14 04:08:34,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:08:34,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:08:34,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23993551] [2020-10-14 04:08:34,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:08:34,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:08:34,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:08:34,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:08:34,592 INFO L87 Difference]: Start difference. First operand 1875 states and 2566 transitions. Second operand 5 states. [2020-10-14 04:08:51,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:08:51,162 INFO L93 Difference]: Finished difference Result 3755 states and 5473 transitions. [2020-10-14 04:08:51,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:08:51,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-14 04:08:51,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:08:51,184 INFO L225 Difference]: With dead ends: 3755 [2020-10-14 04:08:51,184 INFO L226 Difference]: Without dead ends: 2772 [2020-10-14 04:08:51,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:08:51,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2020-10-14 04:08:51,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 2766. [2020-10-14 04:08:51,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2766 states. [2020-10-14 04:08:51,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 3640 transitions. [2020-10-14 04:08:51,259 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 3640 transitions. Word has length 94 [2020-10-14 04:08:51,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:08:51,260 INFO L479 AbstractCegarLoop]: Abstraction has 2766 states and 3640 transitions. [2020-10-14 04:08:51,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:08:51,260 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 3640 transitions. [2020-10-14 04:08:51,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 04:08:51,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:08:51,262 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:08:51,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:08:51,263 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:08:51,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:08:51,263 INFO L82 PathProgramCache]: Analyzing trace with hash 969420396, now seen corresponding path program 1 times [2020-10-14 04:08:51,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:08:51,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393586594] [2020-10-14 04:08:51,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:08:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:51,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:51,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:52,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:52,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 04:08:52,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:08:52,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 928 [2020-10-14 04:08:52,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:52,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:52,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:08:52,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 04:08:52,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 04:08:52,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:08:52,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:08:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:52,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:52,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:52,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:08:52,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:52,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:08:52,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:52,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:52,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:08:52,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:52,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:08:52,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:52,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:08:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:52,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:52,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:52,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 04:08:52,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:52,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 04:08:52,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:52,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:52,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:08:52,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:52,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:08:52,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:52,543 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:08:52,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393586594] [2020-10-14 04:08:52,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:08:52,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:08:52,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880952805] [2020-10-14 04:08:52,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:08:52,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:08:52,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:08:52,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:08:52,546 INFO L87 Difference]: Start difference. First operand 2766 states and 3640 transitions. Second operand 5 states. [2020-10-14 04:09:05,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:09:05,336 INFO L93 Difference]: Finished difference Result 5550 states and 7665 transitions. [2020-10-14 04:09:05,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:09:05,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-14 04:09:05,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:09:05,365 INFO L225 Difference]: With dead ends: 5550 [2020-10-14 04:09:05,366 INFO L226 Difference]: Without dead ends: 3676 [2020-10-14 04:09:05,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:09:05,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2020-10-14 04:09:05,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 3663. [2020-10-14 04:09:05,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3663 states. [2020-10-14 04:09:05,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3663 states to 3663 states and 4831 transitions. [2020-10-14 04:09:05,480 INFO L78 Accepts]: Start accepts. Automaton has 3663 states and 4831 transitions. Word has length 99 [2020-10-14 04:09:05,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:09:05,481 INFO L479 AbstractCegarLoop]: Abstraction has 3663 states and 4831 transitions. [2020-10-14 04:09:05,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:09:05,481 INFO L276 IsEmpty]: Start isEmpty. Operand 3663 states and 4831 transitions. [2020-10-14 04:09:05,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 04:09:05,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:09:05,484 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:09:05,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:09:05,484 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:09:05,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:09:05,485 INFO L82 PathProgramCache]: Analyzing trace with hash -224911582, now seen corresponding path program 1 times [2020-10-14 04:09:05,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:09:05,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652799210] [2020-10-14 04:09:05,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:09:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:05,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:05,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:06,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:06,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 04:09:06,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:09:06,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1371 [2020-10-14 04:09:06,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:06,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:06,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:09:06,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 04:09:06,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 04:09:06,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:07,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:09:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:07,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:07,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:07,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:09:07,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:07,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:09:07,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:07,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:07,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:09:07,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:07,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:09:07,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:07,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:09:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:07,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:07,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:07,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 04:09:07,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:07,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-14 04:09:07,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:07,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:07,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:09:07,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:07,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 04:09:07,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:09:07,320 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:09:07,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652799210] [2020-10-14 04:09:07,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:09:07,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:09:07,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611822122] [2020-10-14 04:09:07,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:09:07,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:09:07,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:09:07,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:09:07,331 INFO L87 Difference]: Start difference. First operand 3663 states and 4831 transitions. Second operand 5 states. [2020-10-14 04:09:21,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:09:21,930 INFO L93 Difference]: Finished difference Result 10394 states and 14005 transitions. [2020-10-14 04:09:21,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:09:21,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-14 04:09:21,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:09:21,980 INFO L225 Difference]: With dead ends: 10394 [2020-10-14 04:09:21,980 INFO L226 Difference]: Without dead ends: 6737 [2020-10-14 04:09:21,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:09:22,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6737 states. [2020-10-14 04:09:22,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6737 to 6733. [2020-10-14 04:09:22,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6733 states. [2020-10-14 04:09:22,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6733 states to 6733 states and 8635 transitions. [2020-10-14 04:09:22,218 INFO L78 Accepts]: Start accepts. Automaton has 6733 states and 8635 transitions. Word has length 122 [2020-10-14 04:09:22,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:09:22,219 INFO L479 AbstractCegarLoop]: Abstraction has 6733 states and 8635 transitions. [2020-10-14 04:09:22,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:09:22,219 INFO L276 IsEmpty]: Start isEmpty. Operand 6733 states and 8635 transitions. [2020-10-14 04:09:22,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-14 04:09:22,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:09:22,225 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:09:22,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:09:22,225 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:09:22,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:09:22,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1418695645, now seen corresponding path program 1 times [2020-10-14 04:09:22,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:09:22,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249328769] [2020-10-14 04:09:22,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:09:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:22,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:22,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:22,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:24,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:27,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:27,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:27,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 04:09:27,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:09:27,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-14 04:09:27,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:27,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:27,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:09:27,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:09:27,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 04:09:27,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:27,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:09:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:27,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:27,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:27,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:09:27,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:27,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:09:27,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:27,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:27,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:09:27,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:27,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:09:27,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:27,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:09:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:27,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:27,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:27,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:09:27,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:27,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 04:09:27,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:27,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:27,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:09:27,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:27,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:09:27,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:27,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 04:09:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:27,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:27,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:27,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:09:27,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:27,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 04:09:27,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:27,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:27,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:09:27,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:09:27,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:09:27,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:28,156 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:09:28,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249328769] [2020-10-14 04:09:28,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:09:28,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:09:28,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534329124] [2020-10-14 04:09:28,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:09:28,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:09:28,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:09:28,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:09:28,165 INFO L87 Difference]: Start difference. First operand 6733 states and 8635 transitions. Second operand 7 states. [2020-10-14 04:09:42,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:09:42,302 INFO L93 Difference]: Finished difference Result 15290 states and 20098 transitions. [2020-10-14 04:09:42,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:09:42,306 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2020-10-14 04:09:42,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:09:42,336 INFO L225 Difference]: With dead ends: 15290 [2020-10-14 04:09:42,337 INFO L226 Difference]: Without dead ends: 6796 [2020-10-14 04:09:42,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:09:42,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6796 states. [2020-10-14 04:09:42,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6796 to 6357. [2020-10-14 04:09:42,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6357 states. [2020-10-14 04:09:42,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6357 states to 6357 states and 7572 transitions. [2020-10-14 04:09:42,498 INFO L78 Accepts]: Start accepts. Automaton has 6357 states and 7572 transitions. Word has length 169 [2020-10-14 04:09:42,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:09:42,499 INFO L479 AbstractCegarLoop]: Abstraction has 6357 states and 7572 transitions. [2020-10-14 04:09:42,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:09:42,499 INFO L276 IsEmpty]: Start isEmpty. Operand 6357 states and 7572 transitions. [2020-10-14 04:09:42,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-14 04:09:42,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:09:42,502 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:09:42,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:09:42,502 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:09:42,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:09:42,503 INFO L82 PathProgramCache]: Analyzing trace with hash -566563639, now seen corresponding path program 1 times [2020-10-14 04:09:42,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:09:42,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150398122] [2020-10-14 04:09:42,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:09:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:42,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:43,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:44,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:44,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 04:09:44,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:09:44,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1632 [2020-10-14 04:09:44,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:44,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:44,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:09:44,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:09:44,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-14 04:09:44,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:44,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:09:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:44,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:44,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:44,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:09:44,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:44,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:09:44,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:44,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:44,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:09:44,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:44,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:09:44,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:44,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:09:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:44,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:44,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:44,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:09:44,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:44,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-14 04:09:44,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:44,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:44,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:09:44,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:09:44,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 04:09:44,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:44,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:09:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:44,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:44,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:44,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:44,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:09:44,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:09:44,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-14 04:09:44,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:44,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:44,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:09:44,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:09:44,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:09:44,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:45,111 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 68 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 04:09:45,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150398122] [2020-10-14 04:09:45,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:09:45,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:09:45,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925651603] [2020-10-14 04:09:45,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:09:45,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:09:45,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:09:45,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:09:45,116 INFO L87 Difference]: Start difference. First operand 6357 states and 7572 transitions. Second operand 9 states. [2020-10-14 04:10:01,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:10:01,968 INFO L93 Difference]: Finished difference Result 16938 states and 20621 transitions. [2020-10-14 04:10:01,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:10:01,970 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 182 [2020-10-14 04:10:01,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:10:02,038 INFO L225 Difference]: With dead ends: 16938 [2020-10-14 04:10:02,041 INFO L226 Difference]: Without dead ends: 10149 [2020-10-14 04:10:02,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:10:02,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10149 states. [2020-10-14 04:10:02,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10149 to 9563. [2020-10-14 04:10:02,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9563 states. [2020-10-14 04:10:02,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9563 states to 9563 states and 11189 transitions. [2020-10-14 04:10:02,409 INFO L78 Accepts]: Start accepts. Automaton has 9563 states and 11189 transitions. Word has length 182 [2020-10-14 04:10:02,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:10:02,410 INFO L479 AbstractCegarLoop]: Abstraction has 9563 states and 11189 transitions. [2020-10-14 04:10:02,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:10:02,411 INFO L276 IsEmpty]: Start isEmpty. Operand 9563 states and 11189 transitions. [2020-10-14 04:10:02,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-14 04:10:02,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:10:02,417 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:10:02,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:10:02,417 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:10:02,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:10:02,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1314523015, now seen corresponding path program 1 times [2020-10-14 04:10:02,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:10:02,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242848153] [2020-10-14 04:10:02,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:10:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:02,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:02,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:04,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:05,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:05,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-14 04:10:05,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:10:05,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3450 [2020-10-14 04:10:05,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:05,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:05,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:05,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 04:10:05,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 04:10:05,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:10:06,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:10:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:06,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:06,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:06,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:10:06,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:06,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:10:06,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:06,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:06,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:06,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:06,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:06,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:06,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:10:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:06,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:06,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:06,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:10:06,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:06,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-14 04:10:06,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:06,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:06,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:10:06,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:06,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 04:10:06,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:10:06,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:10:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:06,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:06,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:06,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 04:10:06,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:06,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-14 04:10:06,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:06,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:06,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:06,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:10:06,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 04:10:06,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:10:07,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 04:10:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:07,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:07,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:07,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:10:07,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:07,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 04:10:07,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:07,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:07,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:07,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 04:10:07,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:07,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:10:07,594 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 127 proven. 74 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 04:10:07,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242848153] [2020-10-14 04:10:07,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:10:07,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:10:07,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477273898] [2020-10-14 04:10:07,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:10:07,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:10:07,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:10:07,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:10:07,598 INFO L87 Difference]: Start difference. First operand 9563 states and 11189 transitions. Second operand 7 states. [2020-10-14 04:10:28,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:10:28,008 INFO L93 Difference]: Finished difference Result 20130 states and 23671 transitions. [2020-10-14 04:10:28,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:10:28,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 291 [2020-10-14 04:10:28,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:10:28,044 INFO L225 Difference]: With dead ends: 20130 [2020-10-14 04:10:28,044 INFO L226 Difference]: Without dead ends: 11008 [2020-10-14 04:10:28,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:10:28,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11008 states. [2020-10-14 04:10:28,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11008 to 10958. [2020-10-14 04:10:28,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10958 states. [2020-10-14 04:10:28,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10958 states to 10958 states and 12805 transitions. [2020-10-14 04:10:28,290 INFO L78 Accepts]: Start accepts. Automaton has 10958 states and 12805 transitions. Word has length 291 [2020-10-14 04:10:28,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:10:28,292 INFO L479 AbstractCegarLoop]: Abstraction has 10958 states and 12805 transitions. [2020-10-14 04:10:28,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:10:28,292 INFO L276 IsEmpty]: Start isEmpty. Operand 10958 states and 12805 transitions. [2020-10-14 04:10:28,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-14 04:10:28,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:10:28,298 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:10:28,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:10:28,298 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:10:28,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:10:28,299 INFO L82 PathProgramCache]: Analyzing trace with hash -690737745, now seen corresponding path program 1 times [2020-10-14 04:10:28,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:10:28,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402784734] [2020-10-14 04:10:28,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:10:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:28,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:29,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:29,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:33,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:33,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-14 04:10:33,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:10:33,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 04:10:33,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:33,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:33,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:33,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 228 [2020-10-14 04:10:33,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 04:10:33,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:33,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:10:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:33,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:33,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:33,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:10:33,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:33,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:10:33,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:33,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:33,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:33,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:33,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:33,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:33,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:10:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:33,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:33,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:33,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:10:33,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:33,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 04:10:33,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:33,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:33,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:33,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:33,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:10:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:33,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:33,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:33,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 04:10:33,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:33,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-14 04:10:33,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:33,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:33,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:10:33,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:33,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 04:10:33,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:33,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-14 04:10:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:33,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:34,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:34,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:10:34,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:34,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 04:10:34,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:34,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:34,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:34,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:10:34,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:10:34,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:10:34,386 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 04:10:34,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402784734] [2020-10-14 04:10:34,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:10:34,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:10:34,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127904479] [2020-10-14 04:10:34,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:10:34,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:10:34,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:10:34,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:10:34,390 INFO L87 Difference]: Start difference. First operand 10958 states and 12805 transitions. Second operand 7 states. [2020-10-14 04:10:53,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:10:53,714 INFO L93 Difference]: Finished difference Result 26089 states and 31354 transitions. [2020-10-14 04:10:53,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:10:53,717 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 311 [2020-10-14 04:10:53,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:10:53,777 INFO L225 Difference]: With dead ends: 26089 [2020-10-14 04:10:53,777 INFO L226 Difference]: Without dead ends: 14633 [2020-10-14 04:10:53,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:10:53,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14633 states. [2020-10-14 04:10:54,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14633 to 14122. [2020-10-14 04:10:54,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14122 states. [2020-10-14 04:10:54,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14122 states to 14122 states and 16865 transitions. [2020-10-14 04:10:54,097 INFO L78 Accepts]: Start accepts. Automaton has 14122 states and 16865 transitions. Word has length 311 [2020-10-14 04:10:54,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:10:54,097 INFO L479 AbstractCegarLoop]: Abstraction has 14122 states and 16865 transitions. [2020-10-14 04:10:54,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:10:54,098 INFO L276 IsEmpty]: Start isEmpty. Operand 14122 states and 16865 transitions. [2020-10-14 04:10:54,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-14 04:10:54,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:10:54,109 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:10:54,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:10:54,110 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:10:54,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:10:54,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1193955072, now seen corresponding path program 1 times [2020-10-14 04:10:54,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:10:54,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621311426] [2020-10-14 04:10:54,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:10:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:54,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:54,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:56,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:56,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-14 04:10:56,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:10:56,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2424 [2020-10-14 04:10:56,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:56,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:56,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:56,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 04:10:56,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 04:10:56,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:56,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:10:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:56,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:56,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:56,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:10:56,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:56,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:10:56,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:56,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:56,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:56,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:56,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:56,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:56,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:10:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:56,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:56,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:56,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:10:56,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:56,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 04:10:56,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:56,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:56,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:56,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:56,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:56,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:56,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:10:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:56,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:57,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:57,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 04:10:57,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:57,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 04:10:57,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:57,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:10:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 04:10:57,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:57,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 04:10:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:57,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:57,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:57,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 04:10:57,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:57,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-14 04:10:57,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:57,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:57,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:57,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:10:57,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 04:10:57,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:57,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-10-14 04:10:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:57,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:57,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:57,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:10:57,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:57,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 04:10:57,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:57,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:57,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:57,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 04:10:57,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:57,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:57,672 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 232 proven. 74 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2020-10-14 04:10:57,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621311426] [2020-10-14 04:10:57,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:10:57,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:10:57,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352028683] [2020-10-14 04:10:57,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:10:57,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:10:57,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:10:57,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:10:57,675 INFO L87 Difference]: Start difference. First operand 14122 states and 16865 transitions. Second operand 7 states. [2020-10-14 04:11:18,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:11:18,278 INFO L93 Difference]: Finished difference Result 35496 states and 43746 transitions. [2020-10-14 04:11:18,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:11:18,281 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 370 [2020-10-14 04:11:18,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:11:18,365 INFO L225 Difference]: With dead ends: 35496 [2020-10-14 04:11:18,365 INFO L226 Difference]: Without dead ends: 21352 [2020-10-14 04:11:18,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:11:18,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21352 states. [2020-10-14 04:11:18,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21352 to 21319. [2020-10-14 04:11:18,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21319 states. [2020-10-14 04:11:19,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21319 states to 21319 states and 25974 transitions. [2020-10-14 04:11:19,013 INFO L78 Accepts]: Start accepts. Automaton has 21319 states and 25974 transitions. Word has length 370 [2020-10-14 04:11:19,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:11:19,014 INFO L479 AbstractCegarLoop]: Abstraction has 21319 states and 25974 transitions. [2020-10-14 04:11:19,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:11:19,014 INFO L276 IsEmpty]: Start isEmpty. Operand 21319 states and 25974 transitions. [2020-10-14 04:11:19,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-10-14 04:11:19,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:11:19,027 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:11:19,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:11:19,027 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:11:19,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:11:19,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1343227973, now seen corresponding path program 1 times [2020-10-14 04:11:19,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:11:19,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491869138] [2020-10-14 04:11:19,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:11:19,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:19,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:20,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:20,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:20,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 391 [2020-10-14 04:11:20,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:11:20,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1788 [2020-10-14 04:11:20,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:20,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:20,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:11:20,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 294 [2020-10-14 04:11:20,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 04:11:20,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:11:21,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:11:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:21,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:21,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:21,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:11:21,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:21,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:11:21,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:21,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:21,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:11:21,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:21,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:11:21,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:11:21,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:11:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:21,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:21,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:21,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:11:21,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:21,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 04:11:21,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:21,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:21,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:11:21,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:21,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:11:21,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:21,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:11:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:21,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:21,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:21,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 04:11:21,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:21,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 04:11:21,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:21,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:21,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:11:21,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:21,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:11:21,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:21,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 04:11:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:21,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:21,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:21,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 04:11:21,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:21,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 04:11:21,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:21,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:21,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:11:21,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:21,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 04:11:21,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:11:21,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-14 04:11:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:21,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:21,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:21,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:11:21,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:21,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 04:11:21,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:21,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:21,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:11:21,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:11:21,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:11:21,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:11:21,868 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 278 proven. 2 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2020-10-14 04:11:21,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491869138] [2020-10-14 04:11:21,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:11:21,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:11:21,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560129865] [2020-10-14 04:11:21,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:11:21,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:11:21,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:11:21,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:11:21,872 INFO L87 Difference]: Start difference. First operand 21319 states and 25974 transitions. Second operand 7 states. [2020-10-14 04:11:43,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:11:43,180 INFO L93 Difference]: Finished difference Result 48556 states and 59819 transitions. [2020-10-14 04:11:43,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:11:43,183 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 375 [2020-10-14 04:11:43,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:11:43,261 INFO L225 Difference]: With dead ends: 48556 [2020-10-14 04:11:43,261 INFO L226 Difference]: Without dead ends: 26305 [2020-10-14 04:11:43,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:11:43,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26305 states. [2020-10-14 04:11:43,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26305 to 25796. [2020-10-14 04:11:43,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25796 states. [2020-10-14 04:11:43,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25796 states to 25796 states and 31896 transitions. [2020-10-14 04:11:43,821 INFO L78 Accepts]: Start accepts. Automaton has 25796 states and 31896 transitions. Word has length 375 [2020-10-14 04:11:43,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:11:43,822 INFO L479 AbstractCegarLoop]: Abstraction has 25796 states and 31896 transitions. [2020-10-14 04:11:43,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:11:43,822 INFO L276 IsEmpty]: Start isEmpty. Operand 25796 states and 31896 transitions. [2020-10-14 04:11:43,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-10-14 04:11:43,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:11:43,840 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-10-14 04:11:43,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:11:43,840 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:11:43,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:11:43,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1425315296, now seen corresponding path program 1 times [2020-10-14 04:11:43,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:11:43,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652240722] [2020-10-14 04:11:43,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:11:43,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:43,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking...