/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem16_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:08:29,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:08:29,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:08:29,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:08:29,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:08:29,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:08:29,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:08:29,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:08:29,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:08:29,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:08:29,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:08:29,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:08:29,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:08:29,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:08:29,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:08:29,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:08:29,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:08:29,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:08:29,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:08:29,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:08:29,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:08:29,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:08:29,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:08:29,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:08:29,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:08:29,924 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:08:29,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:08:29,925 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:08:29,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:08:29,927 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:08:29,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:08:29,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:08:29,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:08:29,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:08:29,930 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:08:29,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:08:29,931 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:08:29,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:08:29,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:08:29,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:08:29,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:08:29,934 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 22:08:29,958 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:08:29,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:08:29,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:08:29,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:08:29,960 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:08:29,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:08:29,961 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:08:29,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:08:29,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:08:29,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:08:29,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:08:29,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:08:29,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:08:29,962 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:08:29,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:08:29,962 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:08:29,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:08:29,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:08:29,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:08:29,963 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:08:29,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:08:29,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:08:29,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:08:29,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:08:29,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:08:29,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:08:29,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:08:29,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:08:29,965 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:08:29,965 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:08:30,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:08:30,349 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:08:30,355 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:08:30,358 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:08:30,359 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:08:30,360 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label02.c [2020-10-14 22:08:30,421 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/006f5d53e/b9987e3a334744fc808f8192b2e4a862/FLAG0387ad193 [2020-10-14 22:08:31,121 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:08:31,122 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label02.c [2020-10-14 22:08:31,144 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/006f5d53e/b9987e3a334744fc808f8192b2e4a862/FLAG0387ad193 [2020-10-14 22:08:31,266 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/006f5d53e/b9987e3a334744fc808f8192b2e4a862 [2020-10-14 22:08:31,279 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:08:31,282 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:08:31,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:08:31,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:08:31,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:08:31,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:08:31" (1/1) ... [2020-10-14 22:08:31,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c78ef90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:31, skipping insertion in model container [2020-10-14 22:08:31,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:08:31" (1/1) ... [2020-10-14 22:08:31,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:08:31,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:08:32,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:08:32,386 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:08:32,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:08:32,862 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:08:32,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:32 WrapperNode [2020-10-14 22:08:32,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:08:32,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:08:32,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:08:32,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:08:32,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:32" (1/1) ... [2020-10-14 22:08:32,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:32" (1/1) ... [2020-10-14 22:08:32,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:32" (1/1) ... [2020-10-14 22:08:32,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:32" (1/1) ... [2020-10-14 22:08:33,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:32" (1/1) ... [2020-10-14 22:08:33,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:32" (1/1) ... [2020-10-14 22:08:33,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:32" (1/1) ... [2020-10-14 22:08:33,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:08:33,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:08:33,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:08:33,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:08:33,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:32" (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 22:08:33,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:08:33,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:08:33,142 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:08:33,142 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:08:33,142 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:08:33,143 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:08:33,143 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:08:33,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:08:33,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:08:33,143 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:08:33,144 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:08:33,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:08:33,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:08:35,636 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:08:35,637 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:08:35,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:08:35 BoogieIcfgContainer [2020-10-14 22:08:35,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:08:35,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:08:35,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:08:35,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:08:35,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:08:31" (1/3) ... [2020-10-14 22:08:35,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1f2e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:08:35, skipping insertion in model container [2020-10-14 22:08:35,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:32" (2/3) ... [2020-10-14 22:08:35,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1f2e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:08:35, skipping insertion in model container [2020-10-14 22:08:35,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:08:35" (3/3) ... [2020-10-14 22:08:35,654 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label02.c [2020-10-14 22:08:35,666 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:08:35,675 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:08:35,690 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:08:35,720 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:08:35,720 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:08:35,720 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:08:35,720 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:08:35,721 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:08:35,721 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:08:35,721 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:08:35,721 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:08:35,752 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2020-10-14 22:08:35,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 22:08:35,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:08:35,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:08:35,765 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:08:35,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:08:35,772 INFO L82 PathProgramCache]: Analyzing trace with hash -64019710, now seen corresponding path program 1 times [2020-10-14 22:08:35,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:08:35,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866485306] [2020-10-14 22:08:35,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:08:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:36,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:36,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:36,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:08:36,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:36,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-10-14 22:08:36,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:36,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:36,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:08:36,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:08:36,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 22:08:36,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:08:36,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:08:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:36,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:36,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:36,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:08:36,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:36,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 22:08:36,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:36,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:36,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:08:36,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:36,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:08:36,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:08:36,701 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 22:08:36,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866485306] [2020-10-14 22:08:36,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:08:36,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:08:36,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034825652] [2020-10-14 22:08:36,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:08:36,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:08:36,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:08:36,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:08:36,741 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 4 states. [2020-10-14 22:08:40,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:08:40,785 INFO L93 Difference]: Finished difference Result 1169 states and 2165 transitions. [2020-10-14 22:08:40,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:08:40,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-14 22:08:40,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:08:40,810 INFO L225 Difference]: With dead ends: 1169 [2020-10-14 22:08:40,810 INFO L226 Difference]: Without dead ends: 696 [2020-10-14 22:08:40,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:08:40,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-14 22:08:40,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 689. [2020-10-14 22:08:40,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-10-14 22:08:40,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1077 transitions. [2020-10-14 22:08:40,952 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1077 transitions. Word has length 67 [2020-10-14 22:08:40,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:08:40,953 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 1077 transitions. [2020-10-14 22:08:40,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:08:40,954 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1077 transitions. [2020-10-14 22:08:40,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 22:08:40,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:08:40,961 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:08:40,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:08:40,962 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:08:40,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:08:40,962 INFO L82 PathProgramCache]: Analyzing trace with hash -28478053, now seen corresponding path program 1 times [2020-10-14 22:08:40,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:08:40,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601311464] [2020-10-14 22:08:40,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:08:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:41,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:41,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:41,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:41,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:41,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 22:08:41,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:08:41,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 951 [2020-10-14 22:08:41,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:41,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:41,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:08:41,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 22:08:41,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 22:08:41,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:08:42,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:08:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:42,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:42,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:42,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:08:42,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:42,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:08:42,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:42,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:42,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:08:42,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:42,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:08:42,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:08:42,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:08:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:42,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:42,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:42,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:08:42,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:42,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 22:08:42,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:42,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:42,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:08:42,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:42,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 22:08:42,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:08:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:08:42,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601311464] [2020-10-14 22:08:42,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:08:42,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:08:42,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980908429] [2020-10-14 22:08:42,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:08:42,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:08:42,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:08:42,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:08:42,209 INFO L87 Difference]: Start difference. First operand 689 states and 1077 transitions. Second operand 5 states. [2020-10-14 22:08:46,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:08:46,796 INFO L93 Difference]: Finished difference Result 2060 states and 3249 transitions. [2020-10-14 22:08:46,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:08:46,801 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-14 22:08:46,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:08:46,810 INFO L225 Difference]: With dead ends: 2060 [2020-10-14 22:08:46,810 INFO L226 Difference]: Without dead ends: 1377 [2020-10-14 22:08:46,813 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 22:08:46,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2020-10-14 22:08:46,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1373. [2020-10-14 22:08:46,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1373 states. [2020-10-14 22:08:46,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1958 transitions. [2020-10-14 22:08:46,865 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1958 transitions. Word has length 142 [2020-10-14 22:08:46,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:08:46,866 INFO L479 AbstractCegarLoop]: Abstraction has 1373 states and 1958 transitions. [2020-10-14 22:08:46,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:08:46,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1958 transitions. [2020-10-14 22:08:46,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 22:08:46,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:08:46,871 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:08:46,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:08:46,872 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:08:46,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:08:46,872 INFO L82 PathProgramCache]: Analyzing trace with hash 495699343, now seen corresponding path program 1 times [2020-10-14 22:08:46,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:08:46,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981643112] [2020-10-14 22:08:46,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:08:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:46,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:47,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:47,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:48,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:48,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 22:08:48,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:08:48,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1363 [2020-10-14 22:08:48,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:48,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:48,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:08:48,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:08:48,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 22:08:48,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:08:48,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:08:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:48,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:48,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:48,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:08:48,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:48,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:08:48,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:48,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:48,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:08:48,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:48,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:08:48,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:08:48,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:08:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:48,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:48,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:48,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 22:08:48,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:48,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-14 22:08:48,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:48,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:48,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:08:48,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:08:48,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 22:08:48,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:08:48,656 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:08:48,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981643112] [2020-10-14 22:08:48,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:08:48,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:08:48,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666344770] [2020-10-14 22:08:48,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:08:48,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:08:48,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:08:48,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:08:48,659 INFO L87 Difference]: Start difference. First operand 1373 states and 1958 transitions. Second operand 7 states. [2020-10-14 22:08:52,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:08:52,991 INFO L93 Difference]: Finished difference Result 3457 states and 4888 transitions. [2020-10-14 22:08:52,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:08:52,992 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-10-14 22:08:52,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:08:53,009 INFO L225 Difference]: With dead ends: 3457 [2020-10-14 22:08:53,009 INFO L226 Difference]: Without dead ends: 2090 [2020-10-14 22:08:53,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:08:53,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2020-10-14 22:08:53,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 2078. [2020-10-14 22:08:53,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2078 states. [2020-10-14 22:08:53,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 2790 transitions. [2020-10-14 22:08:53,101 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 2790 transitions. Word has length 152 [2020-10-14 22:08:53,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:08:53,102 INFO L479 AbstractCegarLoop]: Abstraction has 2078 states and 2790 transitions. [2020-10-14 22:08:53,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:08:53,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 2790 transitions. [2020-10-14 22:08:53,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-14 22:08:53,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:08:53,113 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:08:53,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:08:53,113 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:08:53,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:08:53,114 INFO L82 PathProgramCache]: Analyzing trace with hash 439755282, now seen corresponding path program 1 times [2020-10-14 22:08:53,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:08:53,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154801833] [2020-10-14 22:08:53,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:08:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:53,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:53,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:53,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:53,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:54,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:54,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-14 22:08:54,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:08:54,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1052 [2020-10-14 22:08:54,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:54,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:54,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:08:54,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:08:54,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-14 22:08:54,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:08:54,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:08:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:54,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:54,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:54,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:08:54,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:54,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:08:54,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:54,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:54,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:08:54,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:54,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:08:54,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:08:54,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:08:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:54,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:54,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:54,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:54,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 22:08:54,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:08:54,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 22:08:54,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:54,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:54,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:08:54,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:08:54,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 22:08:54,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:08:54,629 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:08:54,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154801833] [2020-10-14 22:08:54,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:08:54,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:08:54,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213455052] [2020-10-14 22:08:54,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:08:54,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:08:54,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:08:54,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:08:54,632 INFO L87 Difference]: Start difference. First operand 2078 states and 2790 transitions. Second operand 7 states. [2020-10-14 22:08:58,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:08:58,950 INFO L93 Difference]: Finished difference Result 4579 states and 6295 transitions. [2020-10-14 22:08:58,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:08:58,951 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 161 [2020-10-14 22:08:58,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:08:58,974 INFO L225 Difference]: With dead ends: 4579 [2020-10-14 22:08:58,974 INFO L226 Difference]: Without dead ends: 2507 [2020-10-14 22:08:58,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:08:58,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2020-10-14 22:08:59,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2433. [2020-10-14 22:08:59,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2433 states. [2020-10-14 22:08:59,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2433 states to 2433 states and 3201 transitions. [2020-10-14 22:08:59,091 INFO L78 Accepts]: Start accepts. Automaton has 2433 states and 3201 transitions. Word has length 161 [2020-10-14 22:08:59,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:08:59,092 INFO L479 AbstractCegarLoop]: Abstraction has 2433 states and 3201 transitions. [2020-10-14 22:08:59,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:08:59,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2433 states and 3201 transitions. [2020-10-14 22:08:59,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-14 22:08:59,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:08:59,096 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:08:59,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:08:59,096 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:08:59,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:08:59,097 INFO L82 PathProgramCache]: Analyzing trace with hash -895389957, now seen corresponding path program 1 times [2020-10-14 22:08:59,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:08:59,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824408362] [2020-10-14 22:08:59,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:08:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:59,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:59,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:59,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:00,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:00,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 22:09:00,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:09:00,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 944 [2020-10-14 22:09:00,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:00,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:00,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:09:00,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:09:00,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 22:09:00,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:09:00,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:09:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:00,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:00,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:00,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:09:00,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:00,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:09:00,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:00,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:00,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:09:00,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:00,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:09:00,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:00,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:09:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:00,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:00,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:00,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 22:09:00,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:00,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-14 22:09:00,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:00,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:00,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:09:00,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:09:00,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 22:09:00,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 22:09:00,838 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:09:00,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824408362] [2020-10-14 22:09:00,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:09:00,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:09:00,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822707012] [2020-10-14 22:09:00,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:09:00,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:09:00,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:09:00,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:09:00,841 INFO L87 Difference]: Start difference. First operand 2433 states and 3201 transitions. Second operand 7 states. [2020-10-14 22:09:05,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:09:05,515 INFO L93 Difference]: Finished difference Result 4929 states and 6507 transitions. [2020-10-14 22:09:05,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 22:09:05,515 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-10-14 22:09:05,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:09:05,533 INFO L225 Difference]: With dead ends: 4929 [2020-10-14 22:09:05,533 INFO L226 Difference]: Without dead ends: 2839 [2020-10-14 22:09:05,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:09:05,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2839 states. [2020-10-14 22:09:05,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2839 to 2799. [2020-10-14 22:09:05,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2799 states. [2020-10-14 22:09:05,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 3602 transitions. [2020-10-14 22:09:05,626 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 3602 transitions. Word has length 190 [2020-10-14 22:09:05,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:09:05,626 INFO L479 AbstractCegarLoop]: Abstraction has 2799 states and 3602 transitions. [2020-10-14 22:09:05,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:09:05,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 3602 transitions. [2020-10-14 22:09:05,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-14 22:09:05,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:09:05,631 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 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 22:09:05,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:09:05,631 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:09:05,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:09:05,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1512292602, now seen corresponding path program 1 times [2020-10-14 22:09:05,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:09:05,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659020157] [2020-10-14 22:09:05,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:09:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:05,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:05,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:06,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:06,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:07,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:08,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:08,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-14 22:09:08,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:09:08,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2418 [2020-10-14 22:09:08,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:08,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:08,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 22:09:08,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:09:08,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-14 22:09:08,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:08,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:09:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:08,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:08,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:08,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:09:08,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:08,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:09:08,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:08,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:08,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:09:08,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:08,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:09:08,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:08,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:09:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:08,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:08,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:08,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:08,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 22:09:08,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:09:08,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 22:09:08,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:08,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:08,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:09:08,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:08,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 22:09:08,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:08,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 22:09:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:08,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:08,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:08,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:08,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:08,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:09:08,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:09:08,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-14 22:09:08,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:08,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:08,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:09:08,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:08,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 22:09:08,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:09:08,834 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 112 proven. 11 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-14 22:09:08,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659020157] [2020-10-14 22:09:08,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:09:08,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:09:08,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621434945] [2020-10-14 22:09:08,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:09:08,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:09:08,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:09:08,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:09:08,840 INFO L87 Difference]: Start difference. First operand 2799 states and 3602 transitions. Second operand 7 states. [2020-10-14 22:09:18,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:09:18,400 INFO L93 Difference]: Finished difference Result 9050 states and 13409 transitions. [2020-10-14 22:09:18,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:09:18,404 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2020-10-14 22:09:18,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:09:18,439 INFO L225 Difference]: With dead ends: 9050 [2020-10-14 22:09:18,439 INFO L226 Difference]: Without dead ends: 6938 [2020-10-14 22:09:18,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-14 22:09:18,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6938 states. [2020-10-14 22:09:18,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6938 to 6593. [2020-10-14 22:09:18,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6593 states. [2020-10-14 22:09:18,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6593 states to 6593 states and 8680 transitions. [2020-10-14 22:09:18,699 INFO L78 Accepts]: Start accepts. Automaton has 6593 states and 8680 transitions. Word has length 229 [2020-10-14 22:09:18,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:09:18,700 INFO L479 AbstractCegarLoop]: Abstraction has 6593 states and 8680 transitions. [2020-10-14 22:09:18,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:09:18,701 INFO L276 IsEmpty]: Start isEmpty. Operand 6593 states and 8680 transitions. [2020-10-14 22:09:18,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-10-14 22:09:18,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:09:18,716 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:09:18,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:09:18,717 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:09:18,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:09:18,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1069718371, now seen corresponding path program 1 times [2020-10-14 22:09:18,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:09:18,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526264288] [2020-10-14 22:09:18,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:09:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:18,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:18,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:19,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:22,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:22,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:23,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:23,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 402 [2020-10-14 22:09:23,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:09:23,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-14 22:09:23,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:23,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:23,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:09:23,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:09:23,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-14 22:09:23,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:23,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:09:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:23,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:23,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:23,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:09:23,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:23,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:09:23,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:23,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:23,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:09:23,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:23,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:09:23,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:23,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:09:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:23,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:24,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:24,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:24,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 22:09:24,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:09:24,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 22:09:24,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:24,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:24,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:09:24,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:24,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 22:09:24,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:24,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 22:09:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:24,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:24,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:24,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 22:09:24,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:24,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 22:09:24,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:24,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:24,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:09:24,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:09:24,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-14 22:09:24,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:24,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-14 22:09:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:24,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:24,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:24,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 22:09:24,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:24,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 22:09:24,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:24,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:24,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:09:24,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-14 22:09:24,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:09:24,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:24,739 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 269 proven. 84 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 22:09:24,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526264288] [2020-10-14 22:09:24,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:09:24,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:09:24,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187787719] [2020-10-14 22:09:24,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:09:24,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:09:24,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:09:24,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:09:24,742 INFO L87 Difference]: Start difference. First operand 6593 states and 8680 transitions. Second operand 7 states. [2020-10-14 22:09:29,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:09:29,764 INFO L93 Difference]: Finished difference Result 13918 states and 18915 transitions. [2020-10-14 22:09:29,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:09:29,765 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 388 [2020-10-14 22:09:29,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:09:29,801 INFO L225 Difference]: With dead ends: 13918 [2020-10-14 22:09:29,801 INFO L226 Difference]: Without dead ends: 8012 [2020-10-14 22:09:29,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:09:29,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8012 states. [2020-10-14 22:09:29,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8012 to 6628. [2020-10-14 22:09:29,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6628 states. [2020-10-14 22:09:29,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6628 states to 6628 states and 8458 transitions. [2020-10-14 22:09:29,996 INFO L78 Accepts]: Start accepts. Automaton has 6628 states and 8458 transitions. Word has length 388 [2020-10-14 22:09:29,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:09:29,996 INFO L479 AbstractCegarLoop]: Abstraction has 6628 states and 8458 transitions. [2020-10-14 22:09:29,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:09:29,997 INFO L276 IsEmpty]: Start isEmpty. Operand 6628 states and 8458 transitions. [2020-10-14 22:09:30,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-10-14 22:09:30,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:09:30,006 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:09:30,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:09:30,006 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:09:30,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:09:30,007 INFO L82 PathProgramCache]: Analyzing trace with hash -521697350, now seen corresponding path program 1 times [2020-10-14 22:09:30,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:09:30,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529407260] [2020-10-14 22:09:30,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:09:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:30,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:30,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:31,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:32,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:32,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 441 [2020-10-14 22:09:32,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:09:32,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2812 [2020-10-14 22:09:32,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:32,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:32,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:09:32,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-14 22:09:32,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 22:09:32,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:09:33,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:09:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:33,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:33,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:33,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:09:33,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:33,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:09:33,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:33,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:33,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:09:33,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:33,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:09:33,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:33,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:09:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:33,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:33,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:33,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:09:33,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:33,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-14 22:09:33,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:33,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:33,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:09:33,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-14 22:09:33,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:33,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:09:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:33,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:33,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:33,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 22:09:33,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:33,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 22:09:33,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:33,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:33,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:09:33,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:09:33,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 22:09:33,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:34,189 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 240 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:09:34,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529407260] [2020-10-14 22:09:34,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:09:34,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:09:34,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146127906] [2020-10-14 22:09:34,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:09:34,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:09:34,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:09:34,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:09:34,197 INFO L87 Difference]: Start difference. First operand 6628 states and 8458 transitions. Second operand 7 states. [2020-10-14 22:09:40,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:09:40,599 INFO L93 Difference]: Finished difference Result 15321 states and 20103 transitions. [2020-10-14 22:09:40,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:09:40,601 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 429 [2020-10-14 22:09:40,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:09:40,643 INFO L225 Difference]: With dead ends: 15321 [2020-10-14 22:09:40,643 INFO L226 Difference]: Without dead ends: 9036 [2020-10-14 22:09:40,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:09:40,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9036 states. [2020-10-14 22:09:40,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9036 to 8356. [2020-10-14 22:09:40,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8356 states. [2020-10-14 22:09:40,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8356 states to 8356 states and 10370 transitions. [2020-10-14 22:09:40,828 INFO L78 Accepts]: Start accepts. Automaton has 8356 states and 10370 transitions. Word has length 429 [2020-10-14 22:09:40,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:09:40,830 INFO L479 AbstractCegarLoop]: Abstraction has 8356 states and 10370 transitions. [2020-10-14 22:09:40,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:09:40,830 INFO L276 IsEmpty]: Start isEmpty. Operand 8356 states and 10370 transitions. [2020-10-14 22:09:40,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2020-10-14 22:09:40,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:09:40,844 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:09:40,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:09:40,844 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:09:40,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:09:40,845 INFO L82 PathProgramCache]: Analyzing trace with hash -988851565, now seen corresponding path program 1 times [2020-10-14 22:09:40,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:09:40,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793787509] [2020-10-14 22:09:40,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:09:40,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:41,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:41,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:41,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:44,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:45,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:45,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 492 [2020-10-14 22:09:45,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:09:45,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 22:09:45,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:45,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:45,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:09:45,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:09:45,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 421 [2020-10-14 22:09:45,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:46,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:09:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:46,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:46,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:46,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:09:46,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:46,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 22:09:46,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:46,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:46,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:09:46,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:46,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:09:46,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:46,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:09:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:46,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:46,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:46,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:46,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:09:46,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:09:46,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-10-14 22:09:46,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:46,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:46,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:09:46,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:46,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-14 22:09:46,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:09:46,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:09:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:46,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:47,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:47,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 22:09:47,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:47,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-14 22:09:47,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:47,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:47,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:09:47,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:09:47,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 22:09:47,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:09:47,394 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 22:09:47,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793787509] [2020-10-14 22:09:47,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:09:47,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:09:47,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732858587] [2020-10-14 22:09:47,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:09:47,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:09:47,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:09:47,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:09:47,398 INFO L87 Difference]: Start difference. First operand 8356 states and 10370 transitions. Second operand 7 states. [2020-10-14 22:09:53,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:09:53,061 INFO L93 Difference]: Finished difference Result 16168 states and 20869 transitions. [2020-10-14 22:09:53,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:09:53,062 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 480 [2020-10-14 22:09:53,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:09:53,100 INFO L225 Difference]: With dead ends: 16168 [2020-10-14 22:09:53,100 INFO L226 Difference]: Without dead ends: 8496 [2020-10-14 22:09:53,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:09:53,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8496 states. [2020-10-14 22:09:53,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8496 to 8366. [2020-10-14 22:09:53,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8366 states. [2020-10-14 22:09:53,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8366 states to 8366 states and 10395 transitions. [2020-10-14 22:09:53,352 INFO L78 Accepts]: Start accepts. Automaton has 8366 states and 10395 transitions. Word has length 480 [2020-10-14 22:09:53,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:09:53,353 INFO L479 AbstractCegarLoop]: Abstraction has 8366 states and 10395 transitions. [2020-10-14 22:09:53,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:09:53,353 INFO L276 IsEmpty]: Start isEmpty. Operand 8366 states and 10395 transitions. [2020-10-14 22:09:53,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2020-10-14 22:09:53,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:09:53,368 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:09:53,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:09:53,368 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:09:53,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:09:53,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1075441394, now seen corresponding path program 1 times [2020-10-14 22:09:53,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:09:53,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716381831] [2020-10-14 22:09:53,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:09:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:53,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:53,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:55,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:55,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:58,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:58,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 501 [2020-10-14 22:09:58,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:09:58,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 22:09:58,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:58,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:58,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:09:58,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:09:58,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 495 [2020-10-14 22:09:58,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:58,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:09:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:58,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:58,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:58,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:09:58,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:58,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:09:58,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:58,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:58,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:09:58,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:58,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:09:58,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:58,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:09:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:58,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:58,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:58,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:09:58,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:58,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-14 22:09:58,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:58,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:58,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:09:58,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:09:58,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-10-14 22:09:58,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:09:59,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:09:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:59,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:59,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:59,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 22:09:59,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:59,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-14 22:09:59,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:59,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:59,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:09:59,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:09:59,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-14 22:09:59,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:09:59,828 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-14 22:09:59,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716381831] [2020-10-14 22:09:59,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:09:59,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:09:59,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458894068] [2020-10-14 22:09:59,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:09:59,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:09:59,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:09:59,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:09:59,831 INFO L87 Difference]: Start difference. First operand 8366 states and 10395 transitions. Second operand 8 states. [2020-10-14 22:10:14,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:10:14,012 INFO L93 Difference]: Finished difference Result 18167 states and 22524 transitions. [2020-10-14 22:10:14,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:10:14,014 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 489 [2020-10-14 22:10:14,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:10:14,045 INFO L225 Difference]: With dead ends: 18167 [2020-10-14 22:10:14,045 INFO L226 Difference]: Without dead ends: 10485 [2020-10-14 22:10:14,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:10:14,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10485 states. [2020-10-14 22:10:14,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10485 to 10451. [2020-10-14 22:10:14,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10451 states. [2020-10-14 22:10:14,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10451 states to 10451 states and 12731 transitions. [2020-10-14 22:10:14,387 INFO L78 Accepts]: Start accepts. Automaton has 10451 states and 12731 transitions. Word has length 489 [2020-10-14 22:10:14,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:10:14,388 INFO L479 AbstractCegarLoop]: Abstraction has 10451 states and 12731 transitions. [2020-10-14 22:10:14,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:10:14,388 INFO L276 IsEmpty]: Start isEmpty. Operand 10451 states and 12731 transitions. [2020-10-14 22:10:14,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2020-10-14 22:10:14,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:10:14,396 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:10:14,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:10:14,397 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:10:14,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:10:14,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1205109741, now seen corresponding path program 1 times [2020-10-14 22:10:14,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:10:14,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419509804] [2020-10-14 22:10:14,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:10:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:14,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:14,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:15,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:16,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:16,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:19,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:19,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 506 [2020-10-14 22:10:19,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:10:19,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4758 [2020-10-14 22:10:19,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:19,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:19,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:10:19,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-14 22:10:19,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-14 22:10:19,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:10:19,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:10:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:19,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:19,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:19,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:10:19,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:19,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:10:19,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:19,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:19,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:10:19,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:19,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:10:19,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:19,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:10:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:19,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:19,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:19,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 22:10:19,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:19,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 22:10:19,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:19,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:19,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:10:19,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:19,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 22:10:19,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:19,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 22:10:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:19,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:19,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:19,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 22:10:19,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:19,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-14 22:10:19,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:19,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:19,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:10:19,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:10:19,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-14 22:10:19,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:19,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-10-14 22:10:19,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:19,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:19,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:19,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 22:10:19,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:19,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 22:10:19,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:19,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:19,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:10:19,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-14 22:10:19,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:10:19,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:10:20,368 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 272 proven. 84 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 22:10:20,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419509804] [2020-10-14 22:10:20,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:10:20,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:10:20,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778198428] [2020-10-14 22:10:20,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:10:20,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:10:20,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:10:20,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:10:20,371 INFO L87 Difference]: Start difference. First operand 10451 states and 12731 transitions. Second operand 7 states. [2020-10-14 22:10:28,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:10:28,559 INFO L93 Difference]: Finished difference Result 22256 states and 27062 transitions. [2020-10-14 22:10:28,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:10:28,560 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 492 [2020-10-14 22:10:28,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:10:28,592 INFO L225 Difference]: With dead ends: 22256 [2020-10-14 22:10:28,592 INFO L226 Difference]: Without dead ends: 10693 [2020-10-14 22:10:28,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:10:28,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10693 states. [2020-10-14 22:10:28,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10693 to 8992. [2020-10-14 22:10:28,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8992 states. [2020-10-14 22:10:28,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8992 states to 8992 states and 9826 transitions. [2020-10-14 22:10:28,816 INFO L78 Accepts]: Start accepts. Automaton has 8992 states and 9826 transitions. Word has length 492 [2020-10-14 22:10:28,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:10:28,816 INFO L479 AbstractCegarLoop]: Abstraction has 8992 states and 9826 transitions. [2020-10-14 22:10:28,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:10:28,817 INFO L276 IsEmpty]: Start isEmpty. Operand 8992 states and 9826 transitions. [2020-10-14 22:10:28,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2020-10-14 22:10:28,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:10:28,827 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:10:28,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 22:10:28,828 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:10:28,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:10:28,829 INFO L82 PathProgramCache]: Analyzing trace with hash 479027839, now seen corresponding path program 1 times [2020-10-14 22:10:28,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:10:28,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568506942] [2020-10-14 22:10:28,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:10:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:29,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:29,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:30,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:30,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:31,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:31,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 522 [2020-10-14 22:10:31,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:10:31,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2095 [2020-10-14 22:10:31,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:31,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:31,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:10:31,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-14 22:10:31,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-14 22:10:31,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:31,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:10:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:31,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:31,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:31,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:10:31,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:31,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:10:31,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:31,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:31,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:10:31,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:31,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:10:31,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:31,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:10:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:31,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:31,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:31,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:10:31,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:31,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 22:10:31,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:31,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:31,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:10:31,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:31,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:10:31,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:31,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:10:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:31,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:31,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:31,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 22:10:31,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:31,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 22:10:31,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:31,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:31,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:10:31,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:31,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 22:10:31,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:31,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-14 22:10:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:31,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:31,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:31,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:31,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 22:10:31,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:10:31,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 22:10:31,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:31,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:31,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:10:31,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:31,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 22:10:31,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:10:31,861 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 188 proven. 3 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2020-10-14 22:10:31,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568506942] [2020-10-14 22:10:31,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:10:31,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:10:31,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987157718] [2020-10-14 22:10:31,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:10:31,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:10:31,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:10:31,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:10:31,865 INFO L87 Difference]: Start difference. First operand 8992 states and 9826 transitions. Second operand 6 states. [2020-10-14 22:10:39,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:10:39,944 INFO L93 Difference]: Finished difference Result 22430 states and 25332 transitions. [2020-10-14 22:10:39,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:10:39,946 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 508 [2020-10-14 22:10:39,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:10:39,994 INFO L225 Difference]: With dead ends: 22430 [2020-10-14 22:10:39,994 INFO L226 Difference]: Without dead ends: 13402 [2020-10-14 22:10:40,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:10:40,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13402 states. [2020-10-14 22:10:40,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13402 to 13059. [2020-10-14 22:10:40,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13059 states. [2020-10-14 22:10:40,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13059 states to 13059 states and 14213 transitions. [2020-10-14 22:10:40,280 INFO L78 Accepts]: Start accepts. Automaton has 13059 states and 14213 transitions. Word has length 508 [2020-10-14 22:10:40,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:10:40,281 INFO L479 AbstractCegarLoop]: Abstraction has 13059 states and 14213 transitions. [2020-10-14 22:10:40,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:10:40,281 INFO L276 IsEmpty]: Start isEmpty. Operand 13059 states and 14213 transitions. [2020-10-14 22:10:40,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2020-10-14 22:10:40,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:10:40,293 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:10:40,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 22:10:40,294 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:10:40,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:10:40,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1546171705, now seen corresponding path program 1 times [2020-10-14 22:10:40,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:10:40,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035874441] [2020-10-14 22:10:40,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:10:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:40,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:41,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:41,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:41,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 598 [2020-10-14 22:10:41,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:10:41,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1181 [2020-10-14 22:10:41,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:41,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:41,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 22:10:41,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-14 22:10:41,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 338 [2020-10-14 22:10:41,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:41,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:10:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:41,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:41,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:41,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:10:41,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:41,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:10:41,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:41,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:41,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:10:41,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:41,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:10:41,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:41,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:10:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:41,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:41,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:41,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:10:41,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:41,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 22:10:41,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:41,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:41,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:10:41,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:41,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-14 22:10:41,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:42,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:10:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:42,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:42,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:42,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-14 22:10:42,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:42,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-14 22:10:42,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:42,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:42,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:10:42,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:10:42,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 273 [2020-10-14 22:10:42,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:42,738 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 308 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:10:42,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035874441] [2020-10-14 22:10:42,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:10:42,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:10:42,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452376016] [2020-10-14 22:10:42,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:10:42,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:10:42,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:10:42,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:10:42,741 INFO L87 Difference]: Start difference. First operand 13059 states and 14213 transitions. Second operand 8 states. [2020-10-14 22:10:48,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:10:48,125 INFO L93 Difference]: Finished difference Result 27917 states and 30668 transitions. [2020-10-14 22:10:48,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:10:48,126 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 586 [2020-10-14 22:10:48,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:10:48,159 INFO L225 Difference]: With dead ends: 27917 [2020-10-14 22:10:48,159 INFO L226 Difference]: Without dead ends: 15114 [2020-10-14 22:10:48,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:10:48,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15114 states. [2020-10-14 22:10:48,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15114 to 15102. [2020-10-14 22:10:48,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15102 states. [2020-10-14 22:10:48,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15102 states to 15102 states and 16602 transitions. [2020-10-14 22:10:48,433 INFO L78 Accepts]: Start accepts. Automaton has 15102 states and 16602 transitions. Word has length 586 [2020-10-14 22:10:48,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:10:48,434 INFO L479 AbstractCegarLoop]: Abstraction has 15102 states and 16602 transitions. [2020-10-14 22:10:48,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:10:48,434 INFO L276 IsEmpty]: Start isEmpty. Operand 15102 states and 16602 transitions. [2020-10-14 22:10:48,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2020-10-14 22:10:48,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:10:48,444 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:10:48,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 22:10:48,445 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:10:48,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:10:48,445 INFO L82 PathProgramCache]: Analyzing trace with hash -538762522, now seen corresponding path program 1 times [2020-10-14 22:10:48,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:10:48,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160839332] [2020-10-14 22:10:48,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:10:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:48,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:49,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:49,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 611 [2020-10-14 22:10:49,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:49,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-10-14 22:10:49,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:49,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:49,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:10:49,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-14 22:10:49,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-14 22:10:49,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:49,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:10:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:49,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:49,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:49,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:10:49,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:49,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:10:49,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:49,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:49,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:10:49,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:49,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:10:49,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:49,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:10:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:49,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:49,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:49,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:10:49,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:49,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 22:10:49,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:49,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:49,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:10:49,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:49,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:10:49,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:49,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:10:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:49,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:49,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:49,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 22:10:49,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:49,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 22:10:49,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:49,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:49,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:10:49,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:49,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 22:10:49,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:49,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-14 22:10:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:49,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:49,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:49,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 22:10:49,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:49,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-14 22:10:49,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:49,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:49,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:10:49,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:10:49,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-14 22:10:49,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:49,906 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 462 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-14 22:10:49,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160839332] [2020-10-14 22:10:49,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:10:49,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:10:49,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111515638] [2020-10-14 22:10:49,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:10:49,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:10:49,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:10:49,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:10:49,908 INFO L87 Difference]: Start difference. First operand 15102 states and 16602 transitions. Second operand 8 states. [2020-10-14 22:10:57,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:10:57,360 INFO L93 Difference]: Finished difference Result 31576 states and 35122 transitions. [2020-10-14 22:10:57,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:10:57,362 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 597 [2020-10-14 22:10:57,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:10:57,407 INFO L225 Difference]: With dead ends: 31576 [2020-10-14 22:10:57,407 INFO L226 Difference]: Without dead ends: 16817 [2020-10-14 22:10:57,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-14 22:10:57,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16817 states. [2020-10-14 22:10:57,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16817 to 15794. [2020-10-14 22:10:57,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15794 states. [2020-10-14 22:10:57,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15794 states to 15794 states and 17332 transitions. [2020-10-14 22:10:57,712 INFO L78 Accepts]: Start accepts. Automaton has 15794 states and 17332 transitions. Word has length 597 [2020-10-14 22:10:57,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:10:57,713 INFO L479 AbstractCegarLoop]: Abstraction has 15794 states and 17332 transitions. [2020-10-14 22:10:57,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:10:57,713 INFO L276 IsEmpty]: Start isEmpty. Operand 15794 states and 17332 transitions. [2020-10-14 22:10:57,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2020-10-14 22:10:57,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:10:57,731 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:10:57,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 22:10:57,732 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:10:57,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:10:57,732 INFO L82 PathProgramCache]: Analyzing trace with hash 854247847, now seen corresponding path program 1 times [2020-10-14 22:10:57,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:10:57,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038432134] [2020-10-14 22:10:57,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:10:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:57,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:58,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:59,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:00,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:00,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 704 [2020-10-14 22:11:00,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:11:00,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2989 [2020-10-14 22:11:00,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:00,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:00,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:11:00,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-14 22:11:00,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-14 22:11:00,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:00,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:11:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:00,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:00,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:00,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:11:00,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:00,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:11:00,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:00,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:00,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:00,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:00,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:00,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:00,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:11:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:01,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:01,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:01,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:11:01,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:01,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 22:11:01,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:01,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:01,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:01,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:01,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:01,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:01,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:11:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:01,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:01,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:01,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 22:11:01,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:01,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 22:11:01,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:01,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:01,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:11:01,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:01,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 22:11:01,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:01,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-14 22:11:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:01,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:01,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:01,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 22:11:01,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:01,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 22:11:01,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:01,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:01,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:11:01,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:11:01,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-14 22:11:01,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:01,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2020-10-14 22:11:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:01,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:01,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:01,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:11:01,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:01,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 22:11:01,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:01,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:01,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:01,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 22:11:01,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:01,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:11:02,055 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 510 proven. 110 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2020-10-14 22:11:02,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038432134] [2020-10-14 22:11:02,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:11:02,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:11:02,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202483955] [2020-10-14 22:11:02,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:11:02,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:11:02,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:11:02,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:11:02,057 INFO L87 Difference]: Start difference. First operand 15794 states and 17332 transitions. Second operand 7 states. [2020-10-14 22:11:06,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:11:06,283 INFO L93 Difference]: Finished difference Result 33294 states and 36685 transitions. [2020-10-14 22:11:06,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:11:06,284 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 688 [2020-10-14 22:11:06,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:11:06,318 INFO L225 Difference]: With dead ends: 33294 [2020-10-14 22:11:06,318 INFO L226 Difference]: Without dead ends: 18184 [2020-10-14 22:11:06,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:11:06,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18184 states. [2020-10-14 22:11:06,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18184 to 18174. [2020-10-14 22:11:06,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18174 states. [2020-10-14 22:11:06,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18174 states to 18174 states and 19715 transitions. [2020-10-14 22:11:06,606 INFO L78 Accepts]: Start accepts. Automaton has 18174 states and 19715 transitions. Word has length 688 [2020-10-14 22:11:06,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:11:06,607 INFO L479 AbstractCegarLoop]: Abstraction has 18174 states and 19715 transitions. [2020-10-14 22:11:06,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:11:06,607 INFO L276 IsEmpty]: Start isEmpty. Operand 18174 states and 19715 transitions. [2020-10-14 22:11:06,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 736 [2020-10-14 22:11:06,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:11:06,623 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 22:11:06,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 22:11:06,623 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:11:06,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:11:06,624 INFO L82 PathProgramCache]: Analyzing trace with hash 985020946, now seen corresponding path program 1 times [2020-10-14 22:11:06,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:11:06,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532270878] [2020-10-14 22:11:06,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:11:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:06,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:07,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:07,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 749 [2020-10-14 22:11:07,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:07,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-10-14 22:11:07,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:07,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:07,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:11:07,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-14 22:11:07,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 267 [2020-10-14 22:11:07,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:07,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:11:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:07,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:07,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:07,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:11:07,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:07,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:11:07,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:07,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:07,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:07,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:07,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:07,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:07,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:11:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:07,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:07,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:07,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:11:07,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:07,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 22:11:07,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:07,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:07,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:07,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:07,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:07,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:07,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:11:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:07,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:07,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:07,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 22:11:07,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:07,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 22:11:07,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:07,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:07,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:11:07,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:07,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-14 22:11:07,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:07,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-14 22:11:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:07,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:08,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:08,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-14 22:11:08,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:08,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-14 22:11:08,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:08,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:08,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:11:08,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:11:08,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-14 22:11:08,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:08,850 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 583 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-14 22:11:08,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532270878] [2020-10-14 22:11:08,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:11:08,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:11:08,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118185510] [2020-10-14 22:11:08,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:11:08,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:11:08,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:11:08,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:11:08,852 INFO L87 Difference]: Start difference. First operand 18174 states and 19715 transitions. Second operand 8 states. [2020-10-14 22:11:14,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:11:14,119 INFO L93 Difference]: Finished difference Result 36352 states and 39472 transitions. [2020-10-14 22:11:14,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:11:14,121 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 735 [2020-10-14 22:11:14,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:11:14,149 INFO L225 Difference]: With dead ends: 36352 [2020-10-14 22:11:14,149 INFO L226 Difference]: Without dead ends: 18862 [2020-10-14 22:11:14,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:11:14,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18862 states. [2020-10-14 22:11:14,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18862 to 18848. [2020-10-14 22:11:14,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18848 states. [2020-10-14 22:11:14,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18848 states to 18848 states and 20413 transitions. [2020-10-14 22:11:14,398 INFO L78 Accepts]: Start accepts. Automaton has 18848 states and 20413 transitions. Word has length 735 [2020-10-14 22:11:14,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:11:14,399 INFO L479 AbstractCegarLoop]: Abstraction has 18848 states and 20413 transitions. [2020-10-14 22:11:14,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:11:14,399 INFO L276 IsEmpty]: Start isEmpty. Operand 18848 states and 20413 transitions. [2020-10-14 22:11:14,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2020-10-14 22:11:14,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:11:14,413 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:11:14,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 22:11:14,414 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:11:14,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:11:14,414 INFO L82 PathProgramCache]: Analyzing trace with hash 402805347, now seen corresponding path program 1 times [2020-10-14 22:11:14,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:11:14,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332422529] [2020-10-14 22:11:14,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:11:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:14,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:14,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:15,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:16,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:16,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:16,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:19,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:19,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 750 [2020-10-14 22:11:19,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 22:11:19,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 22:11:19,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:19,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:19,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 22:11:19,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:11:19,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 742 [2020-10-14 22:11:19,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:19,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:11:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:19,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:19,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:19,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:11:19,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:19,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:11:19,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:19,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:19,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:11:19,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:19,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:11:19,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:19,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:11:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:19,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:20,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:20,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:20,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:11:20,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:11:20,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-14 22:11:20,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:20,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:20,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:11:20,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:20,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-14 22:11:20,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:20,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:11:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:20,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:20,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:20,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:20,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:11:20,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:11:20,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-14 22:11:20,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:20,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:20,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:11:20,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:20,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-14 22:11:20,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:20,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2020-10-14 22:11:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:20,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:20,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:20,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 22:11:20,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:20,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 22:11:20,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:20,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:20,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:11:20,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:11:20,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-14 22:11:20,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:21,559 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 479 proven. 68 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2020-10-14 22:11:21,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332422529] [2020-10-14 22:11:21,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:11:21,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 22:11:21,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576200865] [2020-10-14 22:11:21,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:11:21,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:11:21,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:11:21,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:11:21,561 INFO L87 Difference]: Start difference. First operand 18848 states and 20413 transitions. Second operand 10 states. [2020-10-14 22:11:31,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:11:31,913 INFO L93 Difference]: Finished difference Result 40130 states and 43642 transitions. [2020-10-14 22:11:31,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 22:11:31,914 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 736 [2020-10-14 22:11:31,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:11:31,972 INFO L225 Difference]: With dead ends: 40130 [2020-10-14 22:11:31,973 INFO L226 Difference]: Without dead ends: 21901 [2020-10-14 22:11:31,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2020-10-14 22:11:32,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21901 states. [2020-10-14 22:11:32,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21901 to 19189. [2020-10-14 22:11:32,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19189 states. [2020-10-14 22:11:32,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19189 states to 19189 states and 20611 transitions. [2020-10-14 22:11:32,314 INFO L78 Accepts]: Start accepts. Automaton has 19189 states and 20611 transitions. Word has length 736 [2020-10-14 22:11:32,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:11:32,315 INFO L479 AbstractCegarLoop]: Abstraction has 19189 states and 20611 transitions. [2020-10-14 22:11:32,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:11:32,316 INFO L276 IsEmpty]: Start isEmpty. Operand 19189 states and 20611 transitions. [2020-10-14 22:11:32,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2020-10-14 22:11:32,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:11:32,332 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:11:32,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 22:11:32,332 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:11:32,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:11:32,333 INFO L82 PathProgramCache]: Analyzing trace with hash -929544061, now seen corresponding path program 1 times [2020-10-14 22:11:32,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:11:32,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244025981] [2020-10-14 22:11:32,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:11:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:32,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:33,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:34,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:34,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 762 [2020-10-14 22:11:34,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:11:34,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2090 [2020-10-14 22:11:34,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:34,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:34,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 22:11:34,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-14 22:11:34,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 343 [2020-10-14 22:11:34,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:34,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:11:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:34,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:34,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:34,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:11:34,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:34,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:11:34,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:34,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:34,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:34,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:34,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:34,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:34,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:11:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:34,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:34,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:34,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:11:34,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:34,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 22:11:34,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:34,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:34,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:34,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:34,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:34,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:34,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:11:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:34,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:34,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:34,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 22:11:34,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:34,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 22:11:34,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:34,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:34,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:11:34,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:34,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-14 22:11:34,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:34,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-14 22:11:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:35,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:35,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:35,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-14 22:11:35,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:35,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-14 22:11:35,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:35,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:35,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:11:35,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:11:35,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 278 [2020-10-14 22:11:35,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:36,022 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 526 proven. 59 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-14 22:11:36,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244025981] [2020-10-14 22:11:36,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:11:36,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:11:36,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402598813] [2020-10-14 22:11:36,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:11:36,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:11:36,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:11:36,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:11:36,025 INFO L87 Difference]: Start difference. First operand 19189 states and 20611 transitions. Second operand 8 states. [2020-10-14 22:11:41,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:11:41,305 INFO L93 Difference]: Finished difference Result 40830 states and 44068 transitions. [2020-10-14 22:11:41,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:11:41,306 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 748 [2020-10-14 22:11:41,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:11:41,336 INFO L225 Difference]: With dead ends: 40830 [2020-10-14 22:11:41,336 INFO L226 Difference]: Without dead ends: 21898 [2020-10-14 22:11:41,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-14 22:11:41,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21898 states. [2020-10-14 22:11:41,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21898 to 21557. [2020-10-14 22:11:41,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21557 states. [2020-10-14 22:11:41,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21557 states to 21557 states and 23269 transitions. [2020-10-14 22:11:41,625 INFO L78 Accepts]: Start accepts. Automaton has 21557 states and 23269 transitions. Word has length 748 [2020-10-14 22:11:41,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:11:41,626 INFO L479 AbstractCegarLoop]: Abstraction has 21557 states and 23269 transitions. [2020-10-14 22:11:41,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:11:41,626 INFO L276 IsEmpty]: Start isEmpty. Operand 21557 states and 23269 transitions. [2020-10-14 22:11:41,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2020-10-14 22:11:41,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:11:41,642 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:11:41,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 22:11:41,642 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:11:41,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:11:41,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1407338454, now seen corresponding path program 1 times [2020-10-14 22:11:41,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:11:41,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458039496] [2020-10-14 22:11:41,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:11:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:41,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:43,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:43,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:43,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 817 [2020-10-14 22:11:43,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:11:43,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1531 [2020-10-14 22:11:43,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:43,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:43,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 22:11:43,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 637 [2020-10-14 22:11:43,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-14 22:11:43,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:43,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:11:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:43,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:43,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:43,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:11:43,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:43,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:11:43,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:43,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:43,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:43,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:43,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:43,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:11:43,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:11:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:43,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:43,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:43,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:11:43,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:43,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 22:11:43,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:43,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:43,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:43,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:43,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:43,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:11:43,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:11:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:43,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:43,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:43,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 22:11:43,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:43,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 22:11:43,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:43,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:43,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:43,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:43,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:43,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:11:43,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-14 22:11:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:44,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:44,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:44,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 22:11:44,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:44,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-14 22:11:44,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:44,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:44,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:11:44,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:44,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-14 22:11:44,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:11:44,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-14 22:11:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:44,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:44,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:44,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:11:44,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:44,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 22:11:44,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:44,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:44,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:11:44,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:11:44,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:11:44,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:45,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 514 proven. 62 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2020-10-14 22:11:45,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458039496] [2020-10-14 22:11:45,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:11:45,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:11:45,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145479955] [2020-10-14 22:11:45,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:11:45,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:11:45,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:11:45,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:11:45,053 INFO L87 Difference]: Start difference. First operand 21557 states and 23269 transitions. Second operand 8 states. [2020-10-14 22:11:50,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:11:50,831 INFO L93 Difference]: Finished difference Result 21902 states and 23619 transitions. [2020-10-14 22:11:50,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:11:50,832 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 801 [2020-10-14 22:11:50,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:11:50,862 INFO L225 Difference]: With dead ends: 21902 [2020-10-14 22:11:50,862 INFO L226 Difference]: Without dead ends: 21559 [2020-10-14 22:11:50,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:11:50,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21559 states. [2020-10-14 22:11:51,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21559 to 21557. [2020-10-14 22:11:51,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21557 states. [2020-10-14 22:11:51,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21557 states to 21557 states and 23262 transitions. [2020-10-14 22:11:51,103 INFO L78 Accepts]: Start accepts. Automaton has 21557 states and 23262 transitions. Word has length 801 [2020-10-14 22:11:51,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:11:51,104 INFO L479 AbstractCegarLoop]: Abstraction has 21557 states and 23262 transitions. [2020-10-14 22:11:51,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:11:51,104 INFO L276 IsEmpty]: Start isEmpty. Operand 21557 states and 23262 transitions. [2020-10-14 22:11:51,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 894 [2020-10-14 22:11:51,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:11:51,119 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 22:11:51,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 22:11:51,120 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:11:51,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:11:51,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1705625522, now seen corresponding path program 1 times [2020-10-14 22:11:51,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:11:51,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768676211] [2020-10-14 22:11:51,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:11:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:51,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:52,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:52,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:52,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 909 [2020-10-14 22:11:52,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:11:52,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1606 [2020-10-14 22:11:52,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:52,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:52,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 22:11:52,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-14 22:11:52,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 267 [2020-10-14 22:11:52,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:53,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:11:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:53,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:53,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:53,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:11:53,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:53,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:11:53,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:53,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:53,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:53,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:53,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:53,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:11:53,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:11:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:53,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:53,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:53,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:11:53,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:53,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 22:11:53,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:53,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:53,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:53,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:53,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:53,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:11:53,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:11:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:53,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:53,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:53,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-14 22:11:53,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:53,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 22:11:53,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:53,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:53,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:53,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:53,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:53,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:53,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-14 22:11:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:53,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:53,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:53,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 22:11:53,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:53,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 22:11:53,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:53,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:53,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:11:53,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:53,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 22:11:53,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:53,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-14 22:11:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:53,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:53,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:53,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 22:11:53,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:53,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-14 22:11:53,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:53,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:53,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:11:53,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:11:53,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-14 22:11:53,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:54,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 738 proven. 66 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2020-10-14 22:11:54,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768676211] [2020-10-14 22:11:54,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:11:54,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 22:11:54,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451943488] [2020-10-14 22:11:54,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:11:54,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:11:54,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:11:54,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:11:54,316 INFO L87 Difference]: Start difference. First operand 21557 states and 23262 transitions. Second operand 9 states.