/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/Problem03_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:08:42,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:08:42,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:08:42,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:08:42,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:08:42,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:08:42,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:08:42,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:08:42,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:08:42,970 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:08:42,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:08:42,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:08:42,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:08:42,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:08:42,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:08:42,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:08:42,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:08:42,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:08:42,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:08:42,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:08:42,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:08:42,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:08:42,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:08:42,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:08:43,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:08:43,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:08:43,012 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:08:43,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:08:43,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:08:43,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:08:43,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:08:43,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:08:43,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:08:43,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:08:43,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:08:43,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:08:43,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:08:43,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:08:43,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:08:43,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:08:43,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:08:43,029 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 19:08:43,051 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:08:43,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:08:43,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:08:43,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:08:43,053 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:08:43,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:08:43,054 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:08:43,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:08:43,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:08:43,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:08:43,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:08:43,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:08:43,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:08:43,055 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:08:43,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:08:43,056 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:08:43,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:08:43,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:08:43,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:08:43,056 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:08:43,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:08:43,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:08:43,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:08:43,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:08:43,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:08:43,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:08:43,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:08:43,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:08:43,058 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:08:43,058 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 19:08:43,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:08:43,396 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:08:43,404 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:08:43,405 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:08:43,405 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:08:43,406 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label13.c [2020-10-14 19:08:43,471 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d373123c/5211a6ff97f74405a9e5a9ff54c3f3a6/FLAG1d2bb16e3 [2020-10-14 19:08:44,066 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:08:44,067 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label13.c [2020-10-14 19:08:44,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d373123c/5211a6ff97f74405a9e5a9ff54c3f3a6/FLAG1d2bb16e3 [2020-10-14 19:08:44,287 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d373123c/5211a6ff97f74405a9e5a9ff54c3f3a6 [2020-10-14 19:08:44,296 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:08:44,297 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:08:44,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:08:44,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:08:44,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:08:44,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:08:44" (1/1) ... [2020-10-14 19:08:44,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:44, skipping insertion in model container [2020-10-14 19:08:44,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:08:44" (1/1) ... [2020-10-14 19:08:44,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:08:44,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:08:45,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:08:45,248 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:08:45,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:08:45,581 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:08:45,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:45 WrapperNode [2020-10-14 19:08:45,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:08:45,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:08:45,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:08:45,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:08:45,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:45" (1/1) ... [2020-10-14 19:08:45,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:45" (1/1) ... [2020-10-14 19:08:45,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:45" (1/1) ... [2020-10-14 19:08:45,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:45" (1/1) ... [2020-10-14 19:08:45,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:45" (1/1) ... [2020-10-14 19:08:45,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:45" (1/1) ... [2020-10-14 19:08:45,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:45" (1/1) ... [2020-10-14 19:08:45,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:08:45,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:08:45,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:08:45,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:08:45,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:45" (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 19:08:45,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:08:45,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:08:45,869 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:08:45,869 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:08:45,869 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:08:45,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:08:45,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:08:45,870 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:08:45,870 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:08:45,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:08:45,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:08:47,791 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:08:47,791 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:08:47,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:08:47 BoogieIcfgContainer [2020-10-14 19:08:47,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:08:47,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:08:47,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:08:47,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:08:47,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:08:44" (1/3) ... [2020-10-14 19:08:47,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2defc685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:08:47, skipping insertion in model container [2020-10-14 19:08:47,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:08:45" (2/3) ... [2020-10-14 19:08:47,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2defc685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:08:47, skipping insertion in model container [2020-10-14 19:08:47,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:08:47" (3/3) ... [2020-10-14 19:08:47,807 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label13.c [2020-10-14 19:08:47,818 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:08:47,827 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:08:47,841 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:08:47,869 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:08:47,869 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:08:47,869 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:08:47,869 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:08:47,870 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:08:47,870 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:08:47,870 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:08:47,870 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:08:47,895 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 19:08:47,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-14 19:08:47,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:08:47,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:08:47,913 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:08:47,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:08:47,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1944252984, now seen corresponding path program 1 times [2020-10-14 19:08:47,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:08:47,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374328409] [2020-10-14 19:08:47,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:08:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:48,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:49,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:52,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:52,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 19:08:52,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:08:52,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3717 [2020-10-14 19:08:52,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:52,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:52,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:08:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:08:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-14 19:08:52,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:08:52,513 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:08:52,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:08:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:52,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:52,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:52,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:08:52,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:52,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 19:08:52,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:52,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:52,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:08:52,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:52,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:08:52,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:52,649 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 19:08:52,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374328409] [2020-10-14 19:08:52,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:08:52,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 19:08:52,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214018022] [2020-10-14 19:08:52,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 19:08:52,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:08:52,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 19:08:52,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 19:08:52,677 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2020-10-14 19:08:52,873 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 19:08:55,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:08:55,779 INFO L93 Difference]: Finished difference Result 867 states and 1525 transitions. [2020-10-14 19:08:55,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:08:55,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2020-10-14 19:08:55,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:08:55,801 INFO L225 Difference]: With dead ends: 867 [2020-10-14 19:08:55,801 INFO L226 Difference]: Without dead ends: 478 [2020-10-14 19:08:55,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:08:55,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-10-14 19:08:55,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 463. [2020-10-14 19:08:55,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2020-10-14 19:08:55,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 728 transitions. [2020-10-14 19:08:55,912 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 728 transitions. Word has length 161 [2020-10-14 19:08:55,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:08:55,914 INFO L479 AbstractCegarLoop]: Abstraction has 463 states and 728 transitions. [2020-10-14 19:08:55,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 19:08:55,914 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 728 transitions. [2020-10-14 19:08:55,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 19:08:55,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:08:55,925 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 19:08:55,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:08:55,929 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:08:55,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:08:55,930 INFO L82 PathProgramCache]: Analyzing trace with hash 2052313592, now seen corresponding path program 1 times [2020-10-14 19:08:55,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:08:55,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647671175] [2020-10-14 19:08:55,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:08:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:56,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:56,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:57,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:58,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:58,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 19:08:58,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:08:58,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2958 [2020-10-14 19:08:58,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:58,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:08:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 19:08:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 19:08:58,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:59,213 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:08:59,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:08:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:59,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:59,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:59,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:08:59,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:59,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:08:59,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:59,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:59,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:08:59,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:59,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:08:59,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:59,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:08:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:08:59,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:08:59,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:08:59,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:08:59,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:08:59,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 19:08:59,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:08:59,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:08:59,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:08:59,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:08:59,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 19:08:59,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:08:59,393 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:08:59,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647671175] [2020-10-14 19:08:59,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:08:59,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:08:59,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447176093] [2020-10-14 19:08:59,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:08:59,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:08:59,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:08:59,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:08:59,397 INFO L87 Difference]: Start difference. First operand 463 states and 728 transitions. Second operand 5 states. [2020-10-14 19:08:59,552 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:09:01,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:01,900 INFO L93 Difference]: Finished difference Result 1368 states and 2180 transitions. [2020-10-14 19:09:01,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:09:01,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-14 19:09:01,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:01,915 INFO L225 Difference]: With dead ends: 1368 [2020-10-14 19:09:01,916 INFO L226 Difference]: Without dead ends: 911 [2020-10-14 19:09:01,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:09:01,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-10-14 19:09:01,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 893. [2020-10-14 19:09:01,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 893 states. [2020-10-14 19:09:01,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1403 transitions. [2020-10-14 19:09:01,990 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1403 transitions. Word has length 171 [2020-10-14 19:09:01,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:01,991 INFO L479 AbstractCegarLoop]: Abstraction has 893 states and 1403 transitions. [2020-10-14 19:09:01,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:09:01,991 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1403 transitions. [2020-10-14 19:09:01,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-14 19:09:01,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:01,996 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-14 19:09:01,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:09:01,997 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:01,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:01,997 INFO L82 PathProgramCache]: Analyzing trace with hash -2050610879, now seen corresponding path program 1 times [2020-10-14 19:09:01,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:01,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734532944] [2020-10-14 19:09:01,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:02,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:02,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:02,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:04,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:04,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:07,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:07,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:07,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 19:09:07,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 19:09:07,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 19:09:07,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:07,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:07,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:07,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 19:09:07,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-14 19:09:07,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:07,318 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:07,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:07,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:07,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:07,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:07,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:07,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:09:07,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:07,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:07,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:07,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:07,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:07,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:07,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:07,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:07,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:07,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:09:07,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:07,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:09:07,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:07,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:07,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:07,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:07,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:07,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:07,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 19:09:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:07,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:07,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:07,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:09:07,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:07,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:09:07,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:07,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:07,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:07,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:07,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 19:09:07,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:09:07,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734532944] [2020-10-14 19:09:07,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:07,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:09:07,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305632258] [2020-10-14 19:09:07,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:09:07,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:07,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:09:07,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:09:07,549 INFO L87 Difference]: Start difference. First operand 893 states and 1403 transitions. Second operand 5 states. [2020-10-14 19:09:07,913 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:09:10,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:11,000 INFO L93 Difference]: Finished difference Result 2631 states and 4200 transitions. [2020-10-14 19:09:11,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:09:11,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-10-14 19:09:11,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:11,016 INFO L225 Difference]: With dead ends: 2631 [2020-10-14 19:09:11,016 INFO L226 Difference]: Without dead ends: 1744 [2020-10-14 19:09:11,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:09:11,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2020-10-14 19:09:11,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1738. [2020-10-14 19:09:11,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2020-10-14 19:09:11,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2618 transitions. [2020-10-14 19:09:11,110 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2618 transitions. Word has length 181 [2020-10-14 19:09:11,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:11,120 INFO L479 AbstractCegarLoop]: Abstraction has 1738 states and 2618 transitions. [2020-10-14 19:09:11,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:09:11,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2618 transitions. [2020-10-14 19:09:11,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-14 19:09:11,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:11,129 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-14 19:09:11,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:09:11,129 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:11,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:11,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1458358527, now seen corresponding path program 1 times [2020-10-14 19:09:11,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:11,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628646159] [2020-10-14 19:09:11,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:11,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:11,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:11,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:11,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:11,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:13,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:13,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:14,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:16,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:16,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-14 19:09:16,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 19:09:16,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 19:09:16,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:16,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:16,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:16,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 19:09:16,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-14 19:09:16,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:16,484 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:16,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:16,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:16,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:16,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:16,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:16,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:09:16,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:16,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:16,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:16,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:16,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:16,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:16,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:16,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:16,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:16,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:09:16,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:16,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:09:16,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:16,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:16,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:16,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:16,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:16,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:16,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 19:09:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:16,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:16,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:16,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:16,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:09:16,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:09:16,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 19:09:16,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:16,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:16,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:16,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:16,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:09:16,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:16,799 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:09:16,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628646159] [2020-10-14 19:09:16,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:16,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:09:16,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095984992] [2020-10-14 19:09:16,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:09:16,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:16,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:09:16,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:09:16,805 INFO L87 Difference]: Start difference. First operand 1738 states and 2618 transitions. Second operand 5 states. [2020-10-14 19:09:17,174 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:09:19,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:19,687 INFO L93 Difference]: Finished difference Result 5149 states and 7838 transitions. [2020-10-14 19:09:19,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:09:19,688 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-10-14 19:09:19,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:19,700 INFO L225 Difference]: With dead ends: 5149 [2020-10-14 19:09:19,701 INFO L226 Difference]: Without dead ends: 1741 [2020-10-14 19:09:19,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:09:19,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2020-10-14 19:09:19,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1737. [2020-10-14 19:09:19,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1737 states. [2020-10-14 19:09:19,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1737 states to 1737 states and 2616 transitions. [2020-10-14 19:09:19,779 INFO L78 Accepts]: Start accepts. Automaton has 1737 states and 2616 transitions. Word has length 181 [2020-10-14 19:09:19,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:19,782 INFO L479 AbstractCegarLoop]: Abstraction has 1737 states and 2616 transitions. [2020-10-14 19:09:19,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:09:19,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1737 states and 2616 transitions. [2020-10-14 19:09:19,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-14 19:09:19,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:19,792 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:09:19,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:09:19,793 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:19,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:19,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1503254335, now seen corresponding path program 1 times [2020-10-14 19:09:19,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:19,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380156113] [2020-10-14 19:09:19,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:19,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:20,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:21,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:21,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:21,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-14 19:09:21,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:09:21,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2072 [2020-10-14 19:09:21,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:21,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:21,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:21,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 19:09:21,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 19:09:21,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:22,192 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:22,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:22,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:22,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:22,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:22,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:22,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:09:22,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:22,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:22,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:22,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:22,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:22,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:22,339 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-14 19:09:22,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:22,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:22,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:22,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:09:22,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:22,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 19:09:22,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:22,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:22,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:22,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:22,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 19:09:22,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:22,513 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:09:22,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380156113] [2020-10-14 19:09:22,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:22,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:09:22,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937385307] [2020-10-14 19:09:22,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:09:22,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:22,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:09:22,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:09:22,517 INFO L87 Difference]: Start difference. First operand 1737 states and 2616 transitions. Second operand 5 states. [2020-10-14 19:09:22,745 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:09:25,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:25,333 INFO L93 Difference]: Finished difference Result 5160 states and 7975 transitions. [2020-10-14 19:09:25,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:09:25,335 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-10-14 19:09:25,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:25,357 INFO L225 Difference]: With dead ends: 5160 [2020-10-14 19:09:25,357 INFO L226 Difference]: Without dead ends: 3429 [2020-10-14 19:09:25,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:09:25,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3429 states. [2020-10-14 19:09:25,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3429 to 2991. [2020-10-14 19:09:25,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2991 states. [2020-10-14 19:09:25,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2991 states to 2991 states and 4579 transitions. [2020-10-14 19:09:25,490 INFO L78 Accepts]: Start accepts. Automaton has 2991 states and 4579 transitions. Word has length 180 [2020-10-14 19:09:25,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:25,491 INFO L479 AbstractCegarLoop]: Abstraction has 2991 states and 4579 transitions. [2020-10-14 19:09:25,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:09:25,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2991 states and 4579 transitions. [2020-10-14 19:09:25,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-14 19:09:25,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:25,504 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:09:25,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:09:25,505 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:25,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:25,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1898988248, now seen corresponding path program 1 times [2020-10-14 19:09:25,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:25,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451069776] [2020-10-14 19:09:25,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:25,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:25,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:27,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:29,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:30,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:30,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:30,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-14 19:09:30,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:09:30,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 19:09:30,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:30,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:30,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:30,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 19:09:30,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 19:09:30,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:30,839 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:30,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:30,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:30,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:30,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:30,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:30,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:09:30,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:30,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:30,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:30,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:30,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:30,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:30,979 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-14 19:09:30,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:30,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:31,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:31,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:09:31,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:31,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 19:09:31,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:31,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:31,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:31,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:31,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:31,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:31,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 19:09:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:31,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:31,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:31,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:09:31,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:31,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 19:09:31,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:31,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:31,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:31,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:31,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 19:09:31,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:31,189 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 19:09:31,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451069776] [2020-10-14 19:09:31,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:31,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:09:31,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965137528] [2020-10-14 19:09:31,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:09:31,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:31,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:09:31,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:09:31,194 INFO L87 Difference]: Start difference. First operand 2991 states and 4579 transitions. Second operand 5 states. [2020-10-14 19:09:31,417 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:09:33,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:33,966 INFO L93 Difference]: Finished difference Result 8491 states and 13453 transitions. [2020-10-14 19:09:33,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:09:33,966 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-10-14 19:09:33,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:33,998 INFO L225 Difference]: With dead ends: 8491 [2020-10-14 19:09:33,998 INFO L226 Difference]: Without dead ends: 5506 [2020-10-14 19:09:34,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:09:34,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5506 states. [2020-10-14 19:09:34,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5506 to 5500. [2020-10-14 19:09:34,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5500 states. [2020-10-14 19:09:34,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5500 states to 5500 states and 8506 transitions. [2020-10-14 19:09:34,197 INFO L78 Accepts]: Start accepts. Automaton has 5500 states and 8506 transitions. Word has length 191 [2020-10-14 19:09:34,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:34,198 INFO L479 AbstractCegarLoop]: Abstraction has 5500 states and 8506 transitions. [2020-10-14 19:09:34,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:09:34,198 INFO L276 IsEmpty]: Start isEmpty. Operand 5500 states and 8506 transitions. [2020-10-14 19:09:34,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-14 19:09:34,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:34,221 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:09:34,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:09:34,221 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:34,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:34,222 INFO L82 PathProgramCache]: Analyzing trace with hash -635534872, now seen corresponding path program 1 times [2020-10-14 19:09:34,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:34,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206303642] [2020-10-14 19:09:34,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:34,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:34,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:36,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:36,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 19:09:36,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:09:36,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1777 [2020-10-14 19:09:36,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:36,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:36,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:09:36,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:09:36,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 19:09:36,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:36,248 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:36,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:36,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:36,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:36,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:36,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:36,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 19:09:36,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:36,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:36,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:36,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:36,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:09:36,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:36,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:36,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:36,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:36,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 19:09:36,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:36,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-14 19:09:36,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:36,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:36,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:36,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:36,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 19:09:36,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:36,758 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:09:36,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206303642] [2020-10-14 19:09:36,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:09:36,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 19:09:36,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846292002] [2020-10-14 19:09:36,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:09:36,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:36,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:09:36,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:09:36,761 INFO L87 Difference]: Start difference. First operand 5500 states and 8506 transitions. Second operand 7 states. [2020-10-14 19:09:36,919 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:09:37,380 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:09:40,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:40,076 INFO L93 Difference]: Finished difference Result 16451 states and 27347 transitions. [2020-10-14 19:09:40,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:09:40,077 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 238 [2020-10-14 19:09:40,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:40,155 INFO L225 Difference]: With dead ends: 16451 [2020-10-14 19:09:40,155 INFO L226 Difference]: Without dead ends: 10957 [2020-10-14 19:09:40,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:09:40,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10957 states. [2020-10-14 19:09:40,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10957 to 10851. [2020-10-14 19:09:40,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10851 states. [2020-10-14 19:09:40,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10851 states to 10851 states and 16785 transitions. [2020-10-14 19:09:40,603 INFO L78 Accepts]: Start accepts. Automaton has 10851 states and 16785 transitions. Word has length 238 [2020-10-14 19:09:40,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:40,603 INFO L479 AbstractCegarLoop]: Abstraction has 10851 states and 16785 transitions. [2020-10-14 19:09:40,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:09:40,603 INFO L276 IsEmpty]: Start isEmpty. Operand 10851 states and 16785 transitions. [2020-10-14 19:09:40,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-14 19:09:40,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:40,646 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:09:40,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:09:40,646 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:40,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:40,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1019903621, now seen corresponding path program 1 times [2020-10-14 19:09:40,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:40,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124922112] [2020-10-14 19:09:40,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:40,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:40,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:42,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:44,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:44,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-14 19:09:44,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:09:44,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3342 [2020-10-14 19:09:44,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:44,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:44,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:44,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 19:09:44,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 19:09:44,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:09:44,224 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:44,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:44,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:44,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:44,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:44,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:44,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:09:44,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:44,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:44,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:09:44,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:44,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:09:44,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:44,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:44,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:44,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:44,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:09:44,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:44,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:09:44,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:44,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:44,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:44,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:44,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:09:44,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:44,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 19:09:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:44,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:44,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:44,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 19:09:44,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:44,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 19:09:44,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:44,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:44,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:44,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:44,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 19:09:44,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:44,685 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 19:09:44,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124922112] [2020-10-14 19:09:44,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:09:44,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:09:44,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382544663] [2020-10-14 19:09:44,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:09:44,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:44,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:09:44,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:09:44,687 INFO L87 Difference]: Start difference. First operand 10851 states and 16785 transitions. Second operand 7 states. [2020-10-14 19:09:44,966 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:09:45,109 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:09:50,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:09:50,833 INFO L93 Difference]: Finished difference Result 43523 states and 79334 transitions. [2020-10-14 19:09:50,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:09:50,834 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 247 [2020-10-14 19:09:50,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:09:51,112 INFO L225 Difference]: With dead ends: 43523 [2020-10-14 19:09:51,113 INFO L226 Difference]: Without dead ends: 32678 [2020-10-14 19:09:51,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:09:51,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32678 states. [2020-10-14 19:09:52,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32678 to 32081. [2020-10-14 19:09:52,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32081 states. [2020-10-14 19:09:52,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32081 states to 32081 states and 52562 transitions. [2020-10-14 19:09:52,541 INFO L78 Accepts]: Start accepts. Automaton has 32081 states and 52562 transitions. Word has length 247 [2020-10-14 19:09:52,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:09:52,542 INFO L479 AbstractCegarLoop]: Abstraction has 32081 states and 52562 transitions. [2020-10-14 19:09:52,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:09:52,542 INFO L276 IsEmpty]: Start isEmpty. Operand 32081 states and 52562 transitions. [2020-10-14 19:09:52,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-14 19:09:52,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:09:52,701 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:09:52,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:09:52,702 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:09:52,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:09:52,702 INFO L82 PathProgramCache]: Analyzing trace with hash 572253736, now seen corresponding path program 1 times [2020-10-14 19:09:52,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:09:52,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132447902] [2020-10-14 19:09:52,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:09:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:52,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:52,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:55,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:57,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:57,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-14 19:09:57,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:09:57,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4282 [2020-10-14 19:09:57,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:57,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:57,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:09:57,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:09:57,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 19:09:57,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:57,194 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:09:57,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:09:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:57,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:57,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:57,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:09:57,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:57,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:09:57,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:57,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:57,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:09:57,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:09:57,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:09:57,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:57,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:09:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:57,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:57,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:57,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:57,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 19:09:57,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:09:57,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 19:09:57,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:57,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:57,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:57,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:57,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 19:09:57,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:57,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 19:09:57,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:09:57,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:09:57,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:09:57,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 19:09:57,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:09:57,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-14 19:09:57,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:09:57,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:09:57,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:09:57,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:09:57,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 19:09:57,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:09:57,968 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-14 19:09:57,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132447902] [2020-10-14 19:09:57,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:09:57,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 19:09:57,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639859974] [2020-10-14 19:09:57,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:09:57,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:09:57,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:09:57,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:09:57,971 INFO L87 Difference]: Start difference. First operand 32081 states and 52562 transitions. Second operand 7 states. [2020-10-14 19:09:58,190 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:09:58,599 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:10:01,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:10:01,554 INFO L93 Difference]: Finished difference Result 71694 states and 128180 transitions. [2020-10-14 19:10:01,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:10:01,555 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 256 [2020-10-14 19:10:01,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:10:01,828 INFO L225 Difference]: With dead ends: 71694 [2020-10-14 19:10:01,828 INFO L226 Difference]: Without dead ends: 39623 [2020-10-14 19:10:01,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 19:10:01,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39623 states. [2020-10-14 19:10:03,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39623 to 38876. [2020-10-14 19:10:03,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38876 states. [2020-10-14 19:10:03,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38876 states to 38876 states and 61871 transitions. [2020-10-14 19:10:03,495 INFO L78 Accepts]: Start accepts. Automaton has 38876 states and 61871 transitions. Word has length 256 [2020-10-14 19:10:03,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:10:03,496 INFO L479 AbstractCegarLoop]: Abstraction has 38876 states and 61871 transitions. [2020-10-14 19:10:03,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:10:03,496 INFO L276 IsEmpty]: Start isEmpty. Operand 38876 states and 61871 transitions. [2020-10-14 19:10:03,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-14 19:10:03,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:10:03,595 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:10:03,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 19:10:03,596 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:10:03,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:10:03,596 INFO L82 PathProgramCache]: Analyzing trace with hash 262942125, now seen corresponding path program 1 times [2020-10-14 19:10:03,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:10:03,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361508201] [2020-10-14 19:10:03,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:10:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:03,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:03,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:05,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:05,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-14 19:10:05,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:10:05,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1736 [2020-10-14 19:10:05,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:05,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:05,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:10:05,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:10:05,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 19:10:05,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:10:05,567 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:10:05,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:10:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:05,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:05,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:05,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:10:05,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:05,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:10:05,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:05,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:05,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:10:05,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:05,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:10:05,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:05,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:10:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:05,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:05,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:05,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:05,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 19:10:05,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:10:05,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 19:10:05,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:05,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:05,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:05,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:05,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 19:10:05,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:05,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 19:10:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:05,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:06,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:06,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 19:10:06,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:06,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-14 19:10:06,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:06,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:06,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:06,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:06,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 19:10:06,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:06,397 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 19:10:06,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361508201] [2020-10-14 19:10:06,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:10:06,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:10:06,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122659667] [2020-10-14 19:10:06,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:10:06,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:10:06,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:10:06,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:10:06,400 INFO L87 Difference]: Start difference. First operand 38876 states and 61871 transitions. Second operand 8 states. [2020-10-14 19:10:06,555 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:10:07,477 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:10:09,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:10:09,935 INFO L93 Difference]: Finished difference Result 92079 states and 153627 transitions. [2020-10-14 19:10:09,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 19:10:09,936 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 259 [2020-10-14 19:10:09,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:10:10,242 INFO L225 Difference]: With dead ends: 92079 [2020-10-14 19:10:10,242 INFO L226 Difference]: Without dead ends: 53834 [2020-10-14 19:10:10,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-14 19:10:10,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53834 states. [2020-10-14 19:10:13,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53834 to 53349. [2020-10-14 19:10:13,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53349 states. [2020-10-14 19:10:13,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53349 states to 53349 states and 85063 transitions. [2020-10-14 19:10:13,593 INFO L78 Accepts]: Start accepts. Automaton has 53349 states and 85063 transitions. Word has length 259 [2020-10-14 19:10:13,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:10:13,594 INFO L479 AbstractCegarLoop]: Abstraction has 53349 states and 85063 transitions. [2020-10-14 19:10:13,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:10:13,594 INFO L276 IsEmpty]: Start isEmpty. Operand 53349 states and 85063 transitions. [2020-10-14 19:10:13,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-14 19:10:13,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:10:13,782 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:10:13,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 19:10:13,783 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:10:13,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:10:13,783 INFO L82 PathProgramCache]: Analyzing trace with hash 30542509, now seen corresponding path program 1 times [2020-10-14 19:10:13,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:10:13,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957394176] [2020-10-14 19:10:13,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:10:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:13,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:14,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:14,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:18,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:18,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:18,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:18,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-14 19:10:18,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:10:18,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 19:10:18,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:18,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:18,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 19:10:18,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:10:18,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 19:10:18,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:19,096 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:10:19,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:10:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:19,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:19,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:19,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:10:19,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:19,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:10:19,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:19,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:19,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:10:19,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:19,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:10:19,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:19,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:10:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:19,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:19,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:19,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:19,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 19:10:19,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:10:19,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 19:10:19,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:19,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:19,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:19,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:19,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 19:10:19,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:19,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 19:10:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:19,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:19,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:19,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:19,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 19:10:19,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:10:19,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 19:10:19,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:19,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:19,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:19,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:19,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 19:10:19,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:19,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 19:10:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:19,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:19,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:19,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 19:10:19,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:19,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-14 19:10:19,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:19,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:19,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:10:19,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:19,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 19:10:19,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:19,785 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 120 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 19:10:19,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957394176] [2020-10-14 19:10:19,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:10:19,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:10:19,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372478182] [2020-10-14 19:10:19,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 19:10:19,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:10:19,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 19:10:19,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:10:19,787 INFO L87 Difference]: Start difference. First operand 53349 states and 85063 transitions. Second operand 9 states. [2020-10-14 19:10:19,965 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:10:20,814 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 131 [2020-10-14 19:10:22,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:10:22,552 INFO L93 Difference]: Finished difference Result 105732 states and 172517 transitions. [2020-10-14 19:10:22,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:10:22,553 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 277 [2020-10-14 19:10:22,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:10:22,844 INFO L225 Difference]: With dead ends: 105732 [2020-10-14 19:10:22,844 INFO L226 Difference]: Without dead ends: 53014 [2020-10-14 19:10:22,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:10:23,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53014 states. [2020-10-14 19:10:24,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53014 to 52625. [2020-10-14 19:10:24,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52625 states. [2020-10-14 19:10:24,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52625 states to 52625 states and 81867 transitions. [2020-10-14 19:10:24,596 INFO L78 Accepts]: Start accepts. Automaton has 52625 states and 81867 transitions. Word has length 277 [2020-10-14 19:10:24,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:10:24,597 INFO L479 AbstractCegarLoop]: Abstraction has 52625 states and 81867 transitions. [2020-10-14 19:10:24,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 19:10:24,597 INFO L276 IsEmpty]: Start isEmpty. Operand 52625 states and 81867 transitions. [2020-10-14 19:10:24,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-14 19:10:24,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:10:24,713 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 19:10:24,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 19:10:24,713 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:10:24,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:10:24,714 INFO L82 PathProgramCache]: Analyzing trace with hash -144011566, now seen corresponding path program 1 times [2020-10-14 19:10:24,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:10:24,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724365200] [2020-10-14 19:10:24,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:10:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:24,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:25,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:25,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-14 19:10:25,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:25,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 865 [2020-10-14 19:10:25,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:25,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:25,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:25,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 19:10:25,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 19:10:25,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:10:25,886 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:10:25,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:10:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:25,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:25,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:25,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:10:25,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:25,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:10:25,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:25,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:25,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:25,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:10:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:26,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:26,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:26,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 19:10:26,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:26,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 19:10:26,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:26,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:26,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:10:26,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:26,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 19:10:26,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:26,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 19:10:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:26,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:26,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:26,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 19:10:26,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:26,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-10-14 19:10:26,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:26,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:26,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:26,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:26,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 19:10:26,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:26,820 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 19:10:26,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724365200] [2020-10-14 19:10:26,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:10:26,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:10:26,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6492601] [2020-10-14 19:10:26,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:10:26,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:10:26,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:10:26,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:10:26,823 INFO L87 Difference]: Start difference. First operand 52625 states and 81867 transitions. Second operand 8 states. [2020-10-14 19:10:26,991 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:10:27,329 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:10:28,528 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:10:32,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:10:32,027 INFO L93 Difference]: Finished difference Result 114546 states and 181681 transitions. [2020-10-14 19:10:32,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 19:10:32,028 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 283 [2020-10-14 19:10:32,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:10:32,253 INFO L225 Difference]: With dead ends: 114546 [2020-10-14 19:10:32,253 INFO L226 Difference]: Without dead ends: 66366 [2020-10-14 19:10:32,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 19:10:32,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66366 states. [2020-10-14 19:10:34,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66366 to 64825. [2020-10-14 19:10:34,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64825 states. [2020-10-14 19:10:34,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64825 states to 64825 states and 84218 transitions. [2020-10-14 19:10:34,238 INFO L78 Accepts]: Start accepts. Automaton has 64825 states and 84218 transitions. Word has length 283 [2020-10-14 19:10:34,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:10:34,238 INFO L479 AbstractCegarLoop]: Abstraction has 64825 states and 84218 transitions. [2020-10-14 19:10:34,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:10:34,239 INFO L276 IsEmpty]: Start isEmpty. Operand 64825 states and 84218 transitions. [2020-10-14 19:10:34,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-14 19:10:34,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:10:34,334 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:10:34,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 19:10:34,335 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:10:34,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:10:34,335 INFO L82 PathProgramCache]: Analyzing trace with hash -35376997, now seen corresponding path program 1 times [2020-10-14 19:10:34,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:10:34,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145871323] [2020-10-14 19:10:34,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:10:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:34,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:35,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:35,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-14 19:10:35,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:35,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 640 [2020-10-14 19:10:35,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:35,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:35,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:35,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 19:10:35,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 19:10:35,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:35,223 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:10:35,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:10:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:35,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:35,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:35,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:10:35,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:35,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:10:35,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:35,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:35,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:10:35,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:35,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:10:35,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:35,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:10:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:35,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:35,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:35,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 19:10:35,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:35,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 19:10:35,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:35,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:35,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:10:35,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:35,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 19:10:35,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:35,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 19:10:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:35,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:35,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:35,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 19:10:35,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:35,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-14 19:10:35,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:35,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:35,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:35,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:35,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 19:10:35,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:35,838 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 19:10:35,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145871323] [2020-10-14 19:10:35,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:10:35,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:10:35,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296993864] [2020-10-14 19:10:35,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:10:35,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:10:35,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:10:35,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:10:35,840 INFO L87 Difference]: Start difference. First operand 64825 states and 84218 transitions. Second operand 7 states. [2020-10-14 19:10:36,075 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:10:36,336 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:10:42,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:10:42,352 INFO L93 Difference]: Finished difference Result 143201 states and 194599 transitions. [2020-10-14 19:10:42,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:10:42,354 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 362 [2020-10-14 19:10:42,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:10:42,573 INFO L225 Difference]: With dead ends: 143201 [2020-10-14 19:10:42,574 INFO L226 Difference]: Without dead ends: 79010 [2020-10-14 19:10:42,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:10:42,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79010 states. [2020-10-14 19:10:44,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79010 to 77509. [2020-10-14 19:10:44,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77509 states. [2020-10-14 19:10:44,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77509 states to 77509 states and 96094 transitions. [2020-10-14 19:10:44,195 INFO L78 Accepts]: Start accepts. Automaton has 77509 states and 96094 transitions. Word has length 362 [2020-10-14 19:10:44,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:10:44,195 INFO L479 AbstractCegarLoop]: Abstraction has 77509 states and 96094 transitions. [2020-10-14 19:10:44,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:10:44,195 INFO L276 IsEmpty]: Start isEmpty. Operand 77509 states and 96094 transitions. [2020-10-14 19:10:44,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-14 19:10:44,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:10:44,292 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:10:44,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 19:10:44,292 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:10:44,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:10:44,292 INFO L82 PathProgramCache]: Analyzing trace with hash -141011598, now seen corresponding path program 1 times [2020-10-14 19:10:44,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:10:44,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378507067] [2020-10-14 19:10:44,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:10:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:44,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:45,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:45,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:47,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:49,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:49,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-14 19:10:49,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:10:49,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-14 19:10:49,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:49,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:49,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 19:10:49,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:10:49,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-10-14 19:10:49,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:50,338 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:10:50,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:10:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:50,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:50,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:50,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:10:50,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:50,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:10:50,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:50,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:50,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:10:50,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:10:50,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:10:50,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:50,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:10:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:50,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:50,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:50,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 19:10:50,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:50,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-14 19:10:50,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:50,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:50,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:10:50,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:50,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 19:10:50,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:51,150 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-10-14 19:10:51,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 19:10:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:51,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:51,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:51,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:10:51,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:10:51,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 19:10:51,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:51,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:51,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:10:51,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:51,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 19:10:51,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:51,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 19:10:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:10:51,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:51,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:10:52,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:10:52,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 19:10:52,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:10:52,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 922 [2020-10-14 19:10:52,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:10:52,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:10:52,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:10:52,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:10:52,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 19:10:52,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:10:53,118 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 211 proven. 102 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 19:10:53,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378507067] [2020-10-14 19:10:53,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:10:53,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 19:10:53,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857182094] [2020-10-14 19:10:53,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 19:10:53,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:10:53,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 19:10:53,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-10-14 19:10:53,121 INFO L87 Difference]: Start difference. First operand 77509 states and 96094 transitions. Second operand 14 states. [2020-10-14 19:10:53,339 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-14 19:10:54,526 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 19:10:55,942 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:10:56,325 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 44 [2020-10-14 19:10:57,102 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 146 [2020-10-14 19:10:57,598 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 84 [2020-10-14 19:10:57,881 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 60 [2020-10-14 19:10:58,243 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2020-10-14 19:10:58,893 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 155 [2020-10-14 19:10:59,307 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 71 [2020-10-14 19:11:01,685 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 48 [2020-10-14 19:11:02,362 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 72 [2020-10-14 19:11:10,804 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-14 19:11:11,587 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2020-10-14 19:11:12,155 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 147 [2020-10-14 19:11:14,191 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 62 [2020-10-14 19:11:14,738 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2020-10-14 19:11:15,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:11:15,731 INFO L93 Difference]: Finished difference Result 261675 states and 353458 transitions. [2020-10-14 19:11:15,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-14 19:11:15,732 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 372 [2020-10-14 19:11:15,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:11:16,342 INFO L225 Difference]: With dead ends: 261675 [2020-10-14 19:11:16,342 INFO L226 Difference]: Without dead ends: 189449 [2020-10-14 19:11:16,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=476, Invalid=1780, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 19:11:16,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189449 states. [2020-10-14 19:11:22,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189449 to 187293. [2020-10-14 19:11:22,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187293 states. [2020-10-14 19:11:23,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187293 states to 187293 states and 254732 transitions. [2020-10-14 19:11:23,292 INFO L78 Accepts]: Start accepts. Automaton has 187293 states and 254732 transitions. Word has length 372 [2020-10-14 19:11:23,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:11:23,292 INFO L479 AbstractCegarLoop]: Abstraction has 187293 states and 254732 transitions. [2020-10-14 19:11:23,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 19:11:23,293 INFO L276 IsEmpty]: Start isEmpty. Operand 187293 states and 254732 transitions. [2020-10-14 19:11:23,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2020-10-14 19:11:23,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:23,693 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:11:23,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 19:11:23,693 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:23,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:23,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1774826754, now seen corresponding path program 1 times [2020-10-14 19:11:23,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:23,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396377010] [2020-10-14 19:11:23,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:23,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:23,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:24,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:25,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:31,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:31,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 398 [2020-10-14 19:11:31,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:11:31,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7736 [2020-10-14 19:11:31,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:31,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:31,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 19:11:31,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:11:31,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 231 [2020-10-14 19:11:31,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:31,950 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:11:31,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:31,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:31,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:31,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:31,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:31,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:11:31,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:31,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:31,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:31,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:31,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:11:31,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:32,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:11:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:32,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:32,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:32,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 19:11:32,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:32,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-14 19:11:32,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:32,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:32,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:11:32,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:32,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 19:11:32,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:32,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 19:11:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:32,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:32,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:32,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:11:32,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:32,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 19:11:32,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:32,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:32,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:32,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:32,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 19:11:32,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:32,828 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2020-10-14 19:11:32,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 19:11:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:32,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:32,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:32,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:11:32,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:32,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 19:11:32,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:32,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:32,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:11:32,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:32,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 19:11:32,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:33,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-14 19:11:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:33,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:33,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:34,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:34,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 19:11:34,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:11:34,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1027 [2020-10-14 19:11:34,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:34,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:34,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:34,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:34,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 19:11:34,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:35,078 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 230 proven. 111 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 19:11:35,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396377010] [2020-10-14 19:11:35,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:11:35,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 19:11:35,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793793777] [2020-10-14 19:11:35,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 19:11:35,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:11:35,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 19:11:35,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-10-14 19:11:35,080 INFO L87 Difference]: Start difference. First operand 187293 states and 254732 transitions. Second operand 15 states. [2020-10-14 19:11:35,552 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 139 [2020-10-14 19:11:35,745 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2020-10-14 19:11:36,264 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-10-14 19:11:36,801 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 141 [2020-10-14 19:11:37,309 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2020-10-14 19:11:38,375 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:11:39,621 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2020-10-14 19:11:39,911 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2020-10-14 19:11:40,265 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 87 [2020-10-14 19:11:40,880 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 156 [2020-10-14 19:11:41,829 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2020-10-14 19:11:42,294 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 90 [2020-10-14 19:11:43,727 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 54 [2020-10-14 19:11:44,317 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 48 [2020-10-14 19:11:44,769 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 19:11:45,106 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 19:11:46,729 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2020-10-14 19:11:47,162 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 52 [2020-10-14 19:11:50,899 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 51 [2020-10-14 19:11:53,116 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2020-10-14 19:11:54,226 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2020-10-14 19:11:54,510 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2020-10-14 19:11:57,513 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2020-10-14 19:11:57,780 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-10-14 19:11:58,442 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 90 [2020-10-14 19:12:00,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:00,365 INFO L93 Difference]: Finished difference Result 470144 states and 628042 transitions. [2020-10-14 19:12:00,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-14 19:12:00,366 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 382 [2020-10-14 19:12:00,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:01,469 INFO L225 Difference]: With dead ends: 470144 [2020-10-14 19:12:01,469 INFO L226 Difference]: Without dead ends: 290811 [2020-10-14 19:12:01,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=723, Invalid=2583, Unknown=0, NotChecked=0, Total=3306 [2020-10-14 19:12:02,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290811 states.