/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:26:31,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:26:31,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:26:31,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:26:31,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:26:31,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:26:31,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:26:31,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:26:31,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:26:31,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:26:31,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:26:31,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:26:31,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:26:31,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:26:31,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:26:31,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:26:31,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:26:31,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:26:31,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:26:31,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:26:31,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:26:31,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:26:31,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:26:31,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:26:31,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:26:31,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:26:31,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:26:31,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:26:31,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:26:31,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:26:31,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:26:31,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:26:31,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:26:31,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:26:31,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:26:31,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:26:31,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:26:31,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:26:31,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:26:31,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:26:31,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:26:31,171 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 11:26:31,220 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:26:31,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:26:31,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:26:31,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:26:31,222 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:26:31,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:26:31,223 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:26:31,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:26:31,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:26:31,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:26:31,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:26:31,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:26:31,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:26:31,226 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:26:31,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:26:31,226 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:26:31,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:26:31,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:26:31,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:26:31,227 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:26:31,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:26:31,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:26:31,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:26:31,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:26:31,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:26:31,228 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:26:31,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:26:31,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:26:31,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:26:31,229 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:26:31,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:26:31,531 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:26:31,541 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:26:31,543 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:26:31,547 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:26:31,548 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label44.c [2020-10-12 11:26:31,612 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a674a7a2b/aeb11fdd27944577bb7d17c9291e090f/FLAG851d10e82 [2020-10-12 11:26:32,195 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:26:32,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label44.c [2020-10-12 11:26:32,213 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a674a7a2b/aeb11fdd27944577bb7d17c9291e090f/FLAG851d10e82 [2020-10-12 11:26:32,359 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a674a7a2b/aeb11fdd27944577bb7d17c9291e090f [2020-10-12 11:26:32,370 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:26:32,372 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:26:32,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:26:32,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:26:32,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:26:32,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:26:32" (1/1) ... [2020-10-12 11:26:32,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6208f0d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:32, skipping insertion in model container [2020-10-12 11:26:32,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:26:32" (1/1) ... [2020-10-12 11:26:32,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:26:32,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:26:33,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:26:33,488 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:26:33,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:26:33,716 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:26:33,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:33 WrapperNode [2020-10-12 11:26:33,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:26:33,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:26:33,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:26:33,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:26:33,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:33" (1/1) ... [2020-10-12 11:26:33,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:33" (1/1) ... [2020-10-12 11:26:33,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:33" (1/1) ... [2020-10-12 11:26:33,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:33" (1/1) ... [2020-10-12 11:26:33,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:33" (1/1) ... [2020-10-12 11:26:33,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:33" (1/1) ... [2020-10-12 11:26:33,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:33" (1/1) ... [2020-10-12 11:26:33,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:26:33,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:26:33,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:26:33,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:26:33,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:26:33,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:26:33,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:26:33,987 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:26:33,988 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:26:33,988 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:26:33,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:26:33,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:26:33,988 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:26:33,989 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:26:33,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:26:33,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:26:35,894 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:26:35,894 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:26:35,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:26:35 BoogieIcfgContainer [2020-10-12 11:26:35,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:26:35,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:26:35,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:26:35,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:26:35,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:26:32" (1/3) ... [2020-10-12 11:26:35,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@475e5db5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:26:35, skipping insertion in model container [2020-10-12 11:26:35,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:26:33" (2/3) ... [2020-10-12 11:26:35,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@475e5db5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:26:35, skipping insertion in model container [2020-10-12 11:26:35,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:26:35" (3/3) ... [2020-10-12 11:26:35,911 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label44.c [2020-10-12 11:26:35,921 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:26:35,930 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:26:35,944 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:26:35,971 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:26:35,972 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:26:35,972 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:26:35,972 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:26:35,972 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:26:35,972 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:26:35,973 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:26:35,973 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:26:35,998 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-12 11:26:36,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-12 11:26:36,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:26:36,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:26:36,017 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:26:36,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:26:36,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1663544320, now seen corresponding path program 1 times [2020-10-12 11:26:36,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:26:36,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911807609] [2020-10-12 11:26:36,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:26:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:26:36,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:37,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:40,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:26:40,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-12 11:26:40,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:26:40,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3653 [2020-10-12 11:26:40,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:26:40,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 11:26:40,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:26:40,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 11:26:40,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:26:41,539 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 76 [2020-10-12 11:26:41,820 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 80 [2020-10-12 11:26:42,068 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 74 [2020-10-12 11:26:42,238 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-10-12 11:26:42,402 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2020-10-12 11:26:42,686 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:26:42,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:26:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:26:42,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:42,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:26:42,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:26:42,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:26:42,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 11:26:42,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:26:42,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:26:42,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:26:42,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:26:42,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:26:43,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:26:43,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911807609] [2020-10-12 11:26:43,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:26:43,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 11:26:43,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629878227] [2020-10-12 11:26:43,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 11:26:43,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:26:43,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 11:26:43,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:26:43,362 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 12 states. [2020-10-12 11:26:43,720 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-12 11:26:44,404 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 178 [2020-10-12 11:26:45,002 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 178 [2020-10-12 11:26:45,761 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 198 [2020-10-12 11:26:46,858 WARN L193 SmtUtils]: Spent 986.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 195 [2020-10-12 11:26:48,202 WARN L193 SmtUtils]: Spent 997.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 192 [2020-10-12 11:26:49,645 WARN L193 SmtUtils]: Spent 937.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 189 [2020-10-12 11:26:52,712 WARN L193 SmtUtils]: Spent 944.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 186 [2020-10-12 11:26:53,921 WARN L193 SmtUtils]: Spent 943.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 182 [2020-10-12 11:26:56,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:26:56,452 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-12 11:26:56,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:26:56,456 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 183 [2020-10-12 11:26:56,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:26:56,473 INFO L225 Difference]: With dead ends: 737 [2020-10-12 11:26:56,473 INFO L226 Difference]: Without dead ends: 364 [2020-10-12 11:26:56,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-12 11:26:56,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-12 11:26:56,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-12 11:26:56,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-12 11:26:56,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-12 11:26:56,558 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 183 [2020-10-12 11:26:56,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:26:56,559 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-12 11:26:56,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 11:26:56,560 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-12 11:26:56,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-12 11:26:56,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:26:56,566 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:26:56,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:26:56,567 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:26:56,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:26:56,567 INFO L82 PathProgramCache]: Analyzing trace with hash -591733849, now seen corresponding path program 1 times [2020-10-12 11:26:56,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:26:56,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463239641] [2020-10-12 11:26:56,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:26:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:26:56,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:56,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:26:57,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:01,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:01,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-12 11:27:01,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:27:01,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4601 [2020-10-12 11:27:01,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:01,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 11:27:01,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:27:01,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-12 11:27:01,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:27:02,286 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2020-10-12 11:27:02,502 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 77 [2020-10-12 11:27:02,697 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2020-10-12 11:27:02,875 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2020-10-12 11:27:03,266 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:27:03,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:27:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:03,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:03,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:03,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:27:03,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:03,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 11:27:03,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:03,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:27:03,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:27:03,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:27:03,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:03,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:27:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:03,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:03,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:03,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:27:03,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:03,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 11:27:03,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:03,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:27:03,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:27:03,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:27:03,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:27:03,739 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2020-10-12 11:27:04,273 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:27:04,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463239641] [2020-10-12 11:27:04,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:27:04,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 11:27:04,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757939781] [2020-10-12 11:27:04,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 11:27:04,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:27:04,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 11:27:04,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-12 11:27:04,277 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 16 states. [2020-10-12 11:27:04,538 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-12 11:27:05,112 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 90 [2020-10-12 11:27:05,434 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-10-12 11:27:05,815 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 96 [2020-10-12 11:27:06,430 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 182 [2020-10-12 11:27:07,097 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 202 [2020-10-12 11:27:08,198 WARN L193 SmtUtils]: Spent 886.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 199 [2020-10-12 11:27:08,614 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-10-12 11:27:10,403 WARN L193 SmtUtils]: Spent 950.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 196 [2020-10-12 11:27:13,123 WARN L193 SmtUtils]: Spent 946.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 193 [2020-10-12 11:27:16,391 WARN L193 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 190 [2020-10-12 11:27:17,222 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 185 [2020-10-12 11:27:20,962 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 151 [2020-10-12 11:27:24,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:27:24,519 INFO L93 Difference]: Finished difference Result 1214 states and 1988 transitions. [2020-10-12 11:27:24,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 11:27:24,520 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 194 [2020-10-12 11:27:24,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:27:24,532 INFO L225 Difference]: With dead ends: 1214 [2020-10-12 11:27:24,532 INFO L226 Difference]: Without dead ends: 971 [2020-10-12 11:27:24,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=229, Invalid=641, Unknown=0, NotChecked=0, Total=870 [2020-10-12 11:27:24,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2020-10-12 11:27:24,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 955. [2020-10-12 11:27:24,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 955 states. [2020-10-12 11:27:24,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1310 transitions. [2020-10-12 11:27:24,605 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1310 transitions. Word has length 194 [2020-10-12 11:27:24,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:27:24,606 INFO L479 AbstractCegarLoop]: Abstraction has 955 states and 1310 transitions. [2020-10-12 11:27:24,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 11:27:24,606 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1310 transitions. [2020-10-12 11:27:24,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-12 11:27:24,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:27:24,615 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:27:24,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:27:24,616 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:27:24,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:27:24,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1015321125, now seen corresponding path program 1 times [2020-10-12 11:27:24,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:27:24,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116596216] [2020-10-12 11:27:24,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:27:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:24,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:25,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:26,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:26,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-12 11:27:26,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:27:26,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1293 [2020-10-12 11:27:26,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:26,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:27:26,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:27:26,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-12 11:27:26,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:26,340 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:27:26,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:27:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:26,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:26,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:26,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:27:26,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:26,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 11:27:26,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:26,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:27:26,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:27:26,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:27:26,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:27:26,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:27:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:26,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:26,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:26,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:27:26,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:26,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 11:27:26,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:26,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:27:26,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:27:26,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:27:26,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:27:26,996 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:27:26,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116596216] [2020-10-12 11:27:26,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:27:27,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:27:27,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123810071] [2020-10-12 11:27:27,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:27:27,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:27:27,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:27:27,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:27:27,005 INFO L87 Difference]: Start difference. First operand 955 states and 1310 transitions. Second operand 5 states. [2020-10-12 11:27:27,415 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-12 11:27:29,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:27:29,669 INFO L93 Difference]: Finished difference Result 1611 states and 2380 transitions. [2020-10-12 11:27:29,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:27:29,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-10-12 11:27:29,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:27:29,684 INFO L225 Difference]: With dead ends: 1611 [2020-10-12 11:27:29,684 INFO L226 Difference]: Without dead ends: 945 [2020-10-12 11:27:29,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:27:29,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2020-10-12 11:27:29,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 943. [2020-10-12 11:27:29,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2020-10-12 11:27:29,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1236 transitions. [2020-10-12 11:27:29,745 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1236 transitions. Word has length 204 [2020-10-12 11:27:29,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:27:29,746 INFO L479 AbstractCegarLoop]: Abstraction has 943 states and 1236 transitions. [2020-10-12 11:27:29,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:27:29,746 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1236 transitions. [2020-10-12 11:27:29,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-12 11:27:29,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:27:29,754 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:27:29,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:27:29,760 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:27:29,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:27:29,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1363465251, now seen corresponding path program 1 times [2020-10-12 11:27:29,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:27:29,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106141563] [2020-10-12 11:27:29,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:27:29,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:29,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:30,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:31,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:33,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:33,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-12 11:27:33,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:27:33,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3454 [2020-10-12 11:27:33,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:33,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:27:33,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:27:33,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-10-12 11:27:33,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:33,618 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:27:33,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:27:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:33,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:33,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:33,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:27:33,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:33,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 11:27:33,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:33,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:27:33,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:27:33,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:27:33,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:33,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:27:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:33,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:33,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:33,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:27:33,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:33,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-12 11:27:33,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:33,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:27:33,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:27:33,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:27:33,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:27:34,046 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 11:27:34,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106141563] [2020-10-12 11:27:34,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:27:34,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:27:34,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930527357] [2020-10-12 11:27:34,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:27:34,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:27:34,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:27:34,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:27:34,051 INFO L87 Difference]: Start difference. First operand 943 states and 1236 transitions. Second operand 7 states. [2020-10-12 11:27:34,183 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:27:34,669 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:27:37,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:27:37,792 INFO L93 Difference]: Finished difference Result 3263 states and 4515 transitions. [2020-10-12 11:27:37,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:27:37,793 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-10-12 11:27:37,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:27:37,811 INFO L225 Difference]: With dead ends: 3263 [2020-10-12 11:27:37,811 INFO L226 Difference]: Without dead ends: 2429 [2020-10-12 11:27:37,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-12 11:27:37,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2020-10-12 11:27:37,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2295. [2020-10-12 11:27:37,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2295 states. [2020-10-12 11:27:37,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 3059 transitions. [2020-10-12 11:27:37,922 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 3059 transitions. Word has length 215 [2020-10-12 11:27:37,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:27:37,923 INFO L479 AbstractCegarLoop]: Abstraction has 2295 states and 3059 transitions. [2020-10-12 11:27:37,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:27:37,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 3059 transitions. [2020-10-12 11:27:37,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-12 11:27:37,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:27:37,933 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:27:37,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:27:37,934 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:27:37,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:27:37,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1911403895, now seen corresponding path program 1 times [2020-10-12 11:27:37,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:27:37,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372122071] [2020-10-12 11:27:37,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:27:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:38,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:38,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:39,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:39,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-12 11:27:39,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:27:39,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1526 [2020-10-12 11:27:39,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:39,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 11:27:39,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:27:39,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-10-12 11:27:39,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 11:27:40,235 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:27:40,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:27:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:40,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:40,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:40,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:27:40,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:40,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:27:40,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:40,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:27:40,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:27:40,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:27:40,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:40,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:27:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:40,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:40,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:40,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 11:27:40,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:40,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-12 11:27:40,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:40,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:27:40,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:27:40,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 11:27:40,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:40,892 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:27:40,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372122071] [2020-10-12 11:27:40,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:27:40,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:27:40,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419947642] [2020-10-12 11:27:40,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:27:40,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:27:40,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:27:40,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:27:40,894 INFO L87 Difference]: Start difference. First operand 2295 states and 3059 transitions. Second operand 8 states. [2020-10-12 11:27:41,045 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:27:41,890 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 145 [2020-10-12 11:27:44,001 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-12 11:27:45,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:27:45,696 INFO L93 Difference]: Finished difference Result 6082 states and 8562 transitions. [2020-10-12 11:27:45,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 11:27:45,697 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 218 [2020-10-12 11:27:45,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:27:45,720 INFO L225 Difference]: With dead ends: 6082 [2020-10-12 11:27:45,720 INFO L226 Difference]: Without dead ends: 3710 [2020-10-12 11:27:45,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:27:45,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3710 states. [2020-10-12 11:27:45,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3710 to 3682. [2020-10-12 11:27:45,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3682 states. [2020-10-12 11:27:45,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3682 states to 3682 states and 5077 transitions. [2020-10-12 11:27:45,843 INFO L78 Accepts]: Start accepts. Automaton has 3682 states and 5077 transitions. Word has length 218 [2020-10-12 11:27:45,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:27:45,844 INFO L479 AbstractCegarLoop]: Abstraction has 3682 states and 5077 transitions. [2020-10-12 11:27:45,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:27:45,844 INFO L276 IsEmpty]: Start isEmpty. Operand 3682 states and 5077 transitions. [2020-10-12 11:27:45,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-12 11:27:45,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:27:45,855 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:27:45,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:27:45,856 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:27:45,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:27:45,856 INFO L82 PathProgramCache]: Analyzing trace with hash 639265076, now seen corresponding path program 1 times [2020-10-12 11:27:45,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:27:45,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790507382] [2020-10-12 11:27:45,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:27:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:45,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:46,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:47,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:48,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:50,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:50,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-12 11:27:50,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:27:50,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4744 [2020-10-12 11:27:50,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:50,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:27:50,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-12 11:27:50,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-12 11:27:50,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:50,830 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:27:50,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:27:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:50,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:50,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:50,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:27:50,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:50,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:27:50,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:50,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:27:50,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:27:50,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:27:50,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:50,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:27:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:50,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:50,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:50,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:27:50,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:50,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 11:27:50,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:50,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:27:50,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:27:50,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 11:27:50,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:50,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 11:27:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:50,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:50,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:51,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:51,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:27:51,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:27:51,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 11:27:51,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:51,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:27:51,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:27:51,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:27:51,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:51,090 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 43 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:27:51,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790507382] [2020-10-12 11:27:51,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:27:51,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:27:51,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904029141] [2020-10-12 11:27:51,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:27:51,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:27:51,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:27:51,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:27:51,093 INFO L87 Difference]: Start difference. First operand 3682 states and 5077 transitions. Second operand 7 states. [2020-10-12 11:27:51,395 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:27:51,901 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:27:55,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:27:55,544 INFO L93 Difference]: Finished difference Result 13902 states and 22190 transitions. [2020-10-12 11:27:55,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:27:55,545 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 234 [2020-10-12 11:27:55,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:27:55,636 INFO L225 Difference]: With dead ends: 13902 [2020-10-12 11:27:55,636 INFO L226 Difference]: Without dead ends: 10329 [2020-10-12 11:27:55,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:27:55,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10329 states. [2020-10-12 11:27:56,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10329 to 10279. [2020-10-12 11:27:56,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10279 states. [2020-10-12 11:27:56,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10279 states to 10279 states and 15482 transitions. [2020-10-12 11:27:56,096 INFO L78 Accepts]: Start accepts. Automaton has 10279 states and 15482 transitions. Word has length 234 [2020-10-12 11:27:56,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:27:56,097 INFO L479 AbstractCegarLoop]: Abstraction has 10279 states and 15482 transitions. [2020-10-12 11:27:56,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:27:56,097 INFO L276 IsEmpty]: Start isEmpty. Operand 10279 states and 15482 transitions. [2020-10-12 11:27:56,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-12 11:27:56,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:27:56,136 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:27:56,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:27:56,137 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:27:56,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:27:56,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1208121743, now seen corresponding path program 1 times [2020-10-12 11:27:56,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:27:56,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111137254] [2020-10-12 11:27:56,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:27:56,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:56,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:56,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:58,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:58,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-12 11:27:58,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:27:58,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2728 [2020-10-12 11:27:58,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:58,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:27:58,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:27:58,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 11:27:58,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:59,097 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:27:59,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:27:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:59,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:59,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:59,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:27:59,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:59,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 11:27:59,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:59,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:27:59,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:27:59,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:27:59,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:59,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:27:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:59,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:59,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:59,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:27:59,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:59,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 11:27:59,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:59,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:27:59,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:27:59,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:27:59,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:59,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 11:27:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:59,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:59,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:59,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 11:27:59,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:59,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 11:27:59,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:59,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:27:59,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-12 11:27:59,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:27:59,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:59,486 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 71 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:27:59,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111137254] [2020-10-12 11:27:59,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:27:59,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:27:59,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759478698] [2020-10-12 11:27:59,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:27:59,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:27:59,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:27:59,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:27:59,488 INFO L87 Difference]: Start difference. First operand 10279 states and 15482 transitions. Second operand 7 states. [2020-10-12 11:27:59,636 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:28:00,999 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 11:28:03,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:28:03,120 INFO L93 Difference]: Finished difference Result 24611 states and 37792 transitions. [2020-10-12 11:28:03,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:28:03,121 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 260 [2020-10-12 11:28:03,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:28:03,217 INFO L225 Difference]: With dead ends: 24611 [2020-10-12 11:28:03,217 INFO L226 Difference]: Without dead ends: 14473 [2020-10-12 11:28:03,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:28:03,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14473 states. [2020-10-12 11:28:03,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14473 to 14387. [2020-10-12 11:28:03,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14387 states. [2020-10-12 11:28:03,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14387 states to 14387 states and 22252 transitions. [2020-10-12 11:28:03,835 INFO L78 Accepts]: Start accepts. Automaton has 14387 states and 22252 transitions. Word has length 260 [2020-10-12 11:28:03,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:28:03,836 INFO L479 AbstractCegarLoop]: Abstraction has 14387 states and 22252 transitions. [2020-10-12 11:28:03,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:28:03,836 INFO L276 IsEmpty]: Start isEmpty. Operand 14387 states and 22252 transitions. [2020-10-12 11:28:03,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-12 11:28:03,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:28:03,895 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 11:28:03,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 11:28:03,896 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:28:03,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:28:03,897 INFO L82 PathProgramCache]: Analyzing trace with hash 2034733384, now seen corresponding path program 1 times [2020-10-12 11:28:03,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:28:03,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861935982] [2020-10-12 11:28:03,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:28:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:04,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:04,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:07,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:09,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:09,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-12 11:28:09,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:28:09,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-12 11:28:09,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:09,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:28:09,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:28:09,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 11:28:09,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:28:09,256 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:28:09,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:28:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:09,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:09,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:09,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:28:09,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:09,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:28:09,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:09,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:28:09,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:09,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:28:09,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:28:09,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:28:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:09,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:09,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:09,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:28:09,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:09,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 11:28:09,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:09,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:09,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:09,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:28:09,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:09,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:28:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:09,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:09,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:09,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:28:09,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:09,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-12 11:28:09,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:09,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:09,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:09,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:28:09,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:09,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 11:28:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:09,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:09,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:09,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 11:28:09,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:09,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 11:28:09,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:09,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:28:09,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-12 11:28:09,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:28:09,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:09,798 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 84 proven. 35 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-12 11:28:09,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861935982] [2020-10-12 11:28:09,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:28:09,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:28:09,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135272639] [2020-10-12 11:28:09,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:28:09,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:28:09,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:28:09,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:28:09,801 INFO L87 Difference]: Start difference. First operand 14387 states and 22252 transitions. Second operand 7 states. [2020-10-12 11:28:09,929 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:28:10,427 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 11:28:12,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:28:12,916 INFO L93 Difference]: Finished difference Result 33089 states and 51559 transitions. [2020-10-12 11:28:12,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:28:12,916 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-10-12 11:28:12,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:28:13,016 INFO L225 Difference]: With dead ends: 33089 [2020-10-12 11:28:13,016 INFO L226 Difference]: Without dead ends: 18859 [2020-10-12 11:28:13,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:28:13,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18859 states. [2020-10-12 11:28:13,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18859 to 18571. [2020-10-12 11:28:13,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18571 states. [2020-10-12 11:28:13,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18571 states to 18571 states and 28758 transitions. [2020-10-12 11:28:13,664 INFO L78 Accepts]: Start accepts. Automaton has 18571 states and 28758 transitions. Word has length 271 [2020-10-12 11:28:13,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:28:13,665 INFO L479 AbstractCegarLoop]: Abstraction has 18571 states and 28758 transitions. [2020-10-12 11:28:13,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:28:13,665 INFO L276 IsEmpty]: Start isEmpty. Operand 18571 states and 28758 transitions. [2020-10-12 11:28:13,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-12 11:28:13,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:28:13,861 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:28:13,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 11:28:13,862 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:28:13,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:28:13,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1363424462, now seen corresponding path program 1 times [2020-10-12 11:28:13,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:28:13,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391657879] [2020-10-12 11:28:13,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:28:13,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:14,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:14,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:17,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:17,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-12 11:28:17,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:28:17,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3189 [2020-10-12 11:28:17,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:17,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 11:28:17,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:28:17,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 243 [2020-10-12 11:28:17,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:18,043 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2020-10-12 11:28:18,223 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2020-10-12 11:28:18,396 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2020-10-12 11:28:18,553 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-10-12 11:28:18,682 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2020-10-12 11:28:18,913 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:28:18,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:28:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:18,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:18,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:18,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:28:18,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:18,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 11:28:18,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:18,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:28:18,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:18,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:28:18,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:19,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:28:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:19,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:19,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:19,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:28:19,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:19,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-12 11:28:19,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:19,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:28:19,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:19,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 11:28:19,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:20,419 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:28:20,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391657879] [2020-10-12 11:28:20,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:28:20,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 11:28:20,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689882130] [2020-10-12 11:28:20,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 11:28:20,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:28:20,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 11:28:20,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-10-12 11:28:20,422 INFO L87 Difference]: Start difference. First operand 18571 states and 28758 transitions. Second operand 16 states. [2020-10-12 11:28:20,632 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-12 11:28:22,128 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 78 [2020-10-12 11:28:22,340 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-10-12 11:28:22,636 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 89 [2020-10-12 11:28:23,206 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 176 [2020-10-12 11:28:23,968 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 196 [2020-10-12 11:28:25,135 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 193 [2020-10-12 11:28:26,627 WARN L193 SmtUtils]: Spent 906.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 190 [2020-10-12 11:28:27,850 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 187 [2020-10-12 11:28:30,154 WARN L193 SmtUtils]: Spent 985.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 184 [2020-10-12 11:28:31,524 WARN L193 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 180 [2020-10-12 11:28:35,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:28:35,274 INFO L93 Difference]: Finished difference Result 28519 states and 42629 transitions. [2020-10-12 11:28:35,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 11:28:35,275 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 283 [2020-10-12 11:28:35,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:28:35,370 INFO L225 Difference]: With dead ends: 28519 [2020-10-12 11:28:35,371 INFO L226 Difference]: Without dead ends: 22778 [2020-10-12 11:28:35,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2020-10-12 11:28:35,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22778 states. [2020-10-12 11:28:35,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22778 to 22440. [2020-10-12 11:28:35,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22440 states. [2020-10-12 11:28:35,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22440 states to 22440 states and 34133 transitions. [2020-10-12 11:28:35,963 INFO L78 Accepts]: Start accepts. Automaton has 22440 states and 34133 transitions. Word has length 283 [2020-10-12 11:28:35,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:28:35,963 INFO L479 AbstractCegarLoop]: Abstraction has 22440 states and 34133 transitions. [2020-10-12 11:28:35,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 11:28:35,964 INFO L276 IsEmpty]: Start isEmpty. Operand 22440 states and 34133 transitions. [2020-10-12 11:28:36,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-12 11:28:36,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:28:36,020 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:28:36,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 11:28:36,021 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:28:36,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:28:36,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1871555881, now seen corresponding path program 1 times [2020-10-12 11:28:36,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:28:36,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236360050] [2020-10-12 11:28:36,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:28:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:36,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:36,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:39,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:39,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-12 11:28:39,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:28:39,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3202 [2020-10-12 11:28:39,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:39,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:28:39,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:28:39,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 279 [2020-10-12 11:28:39,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:40,695 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:28:40,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:28:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:40,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:40,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:40,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:28:40,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:40,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:28:40,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:40,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:28:40,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:40,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:28:40,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:40,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:28:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:40,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:40,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:40,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:28:40,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:40,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-12 11:28:40,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:40,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:28:40,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:40,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:28:40,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:28:41,175 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2020-10-12 11:28:41,418 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2020-10-12 11:28:41,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:28:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:41,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:41,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:41,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 11:28:41,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:41,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-12 11:28:41,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:41,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:28:41,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:41,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-12 11:28:41,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:43,345 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 7 proven. 133 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 11:28:43,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236360050] [2020-10-12 11:28:43,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:28:43,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 11:28:43,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192845681] [2020-10-12 11:28:43,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 11:28:43,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:28:43,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 11:28:43,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2020-10-12 11:28:43,347 INFO L87 Difference]: Start difference. First operand 22440 states and 34133 transitions. Second operand 19 states. [2020-10-12 11:28:43,507 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 38 [2020-10-12 11:28:44,019 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 147 [2020-10-12 11:28:45,552 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2020-10-12 11:28:46,185 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 84 [2020-10-12 11:28:46,489 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 65 [2020-10-12 11:28:46,959 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 77 [2020-10-12 11:28:47,532 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 171 [2020-10-12 11:28:48,185 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 179 [2020-10-12 11:28:48,936 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2020-10-12 11:28:49,887 WARN L193 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 178 [2020-10-12 11:28:50,513 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 71 [2020-10-12 11:28:50,796 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 51 [2020-10-12 11:28:51,418 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 151 [2020-10-12 11:28:52,222 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 177 [2020-10-12 11:28:53,249 WARN L193 SmtUtils]: Spent 848.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 176 [2020-10-12 11:28:54,205 WARN L193 SmtUtils]: Spent 833.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 175 [2020-10-12 11:28:54,595 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 11:28:56,506 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 173 [2020-10-12 11:29:00,620 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-10-12 11:29:00,844 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-10-12 11:29:01,390 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 171 [2020-10-12 11:29:01,982 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 179 [2020-10-12 11:29:02,875 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 178 [2020-10-12 11:29:03,840 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 177 [2020-10-12 11:29:04,677 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 176 [2020-10-12 11:29:05,502 WARN L193 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 175 [2020-10-12 11:29:06,284 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 173 [2020-10-12 11:29:06,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:29:06,786 INFO L93 Difference]: Finished difference Result 51112 states and 80798 transitions. [2020-10-12 11:29:06,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-12 11:29:06,787 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 321 [2020-10-12 11:29:06,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:29:06,934 INFO L225 Difference]: With dead ends: 51112 [2020-10-12 11:29:06,934 INFO L226 Difference]: Without dead ends: 32504 [2020-10-12 11:29:06,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=514, Invalid=1742, Unknown=0, NotChecked=0, Total=2256 [2020-10-12 11:29:07,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32504 states. [2020-10-12 11:29:07,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32504 to 32018. [2020-10-12 11:29:07,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32018 states. [2020-10-12 11:29:07,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32018 states to 32018 states and 46723 transitions. [2020-10-12 11:29:07,772 INFO L78 Accepts]: Start accepts. Automaton has 32018 states and 46723 transitions. Word has length 321 [2020-10-12 11:29:07,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:29:07,772 INFO L479 AbstractCegarLoop]: Abstraction has 32018 states and 46723 transitions. [2020-10-12 11:29:07,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 11:29:07,772 INFO L276 IsEmpty]: Start isEmpty. Operand 32018 states and 46723 transitions. [2020-10-12 11:29:07,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-12 11:29:07,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:29:07,820 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:29:07,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 11:29:07,820 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:29:07,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:29:07,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1619694663, now seen corresponding path program 1 times [2020-10-12 11:29:07,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:29:07,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560165535] [2020-10-12 11:29:07,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:29:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:07,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:08,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:09,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:10,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:13,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:13,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-12 11:29:13,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:29:13,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5268 [2020-10-12 11:29:13,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:13,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:29:13,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:29:13,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-12 11:29:13,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:13,387 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:29:13,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:29:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:13,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:13,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:13,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:29:13,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:13,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 11:29:13,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:13,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:29:13,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:13,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:29:13,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:13,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:29:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:13,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:13,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:13,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:13,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:29:13,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:29:13,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-12 11:29:13,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:13,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:13,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:13,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 11:29:13,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:13,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 11:29:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:13,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:13,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:13,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 11:29:13,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:13,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 11:29:13,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:13,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:13,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:13,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 11:29:13,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:13,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-12 11:29:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:13,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:13,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:13,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 11:29:13,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:13,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 11:29:13,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:13,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:13,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:13,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 11:29:13,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:14,035 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 143 proven. 4 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-12 11:29:14,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560165535] [2020-10-12 11:29:14,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:29:14,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:29:14,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129889703] [2020-10-12 11:29:14,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:29:14,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:29:14,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:29:14,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:29:14,037 INFO L87 Difference]: Start difference. First operand 32018 states and 46723 transitions. Second operand 7 states. [2020-10-12 11:29:14,175 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:29:15,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:29:15,888 INFO L93 Difference]: Finished difference Result 46737 states and 69107 transitions. [2020-10-12 11:29:15,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:29:15,888 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 335 [2020-10-12 11:29:15,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:29:16,014 INFO L225 Difference]: With dead ends: 46737 [2020-10-12 11:29:16,015 INFO L226 Difference]: Without dead ends: 31851 [2020-10-12 11:29:16,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:29:16,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31851 states. [2020-10-12 11:29:16,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31851 to 31797. [2020-10-12 11:29:16,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31797 states. [2020-10-12 11:29:16,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31797 states to 31797 states and 45283 transitions. [2020-10-12 11:29:16,888 INFO L78 Accepts]: Start accepts. Automaton has 31797 states and 45283 transitions. Word has length 335 [2020-10-12 11:29:16,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:29:16,889 INFO L479 AbstractCegarLoop]: Abstraction has 31797 states and 45283 transitions. [2020-10-12 11:29:16,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:29:16,890 INFO L276 IsEmpty]: Start isEmpty. Operand 31797 states and 45283 transitions. [2020-10-12 11:29:16,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-12 11:29:16,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:29:16,945 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:29:16,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 11:29:16,946 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:29:16,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:29:16,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1336175924, now seen corresponding path program 1 times [2020-10-12 11:29:16,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:29:16,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529472072] [2020-10-12 11:29:16,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:29:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:17,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:17,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:18,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:21,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:21,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-12 11:29:21,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:29:21,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4011 [2020-10-12 11:29:21,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:21,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:29:21,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:29:21,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-12 11:29:21,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:21,269 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:29:21,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:29:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:21,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:21,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:21,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:29:21,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:21,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:29:21,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:21,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:29:21,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:21,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:29:21,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:21,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:29:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:21,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:21,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:21,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:21,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 11:29:21,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:29:21,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-12 11:29:21,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:21,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:21,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:21,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 11:29:21,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:21,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-12 11:29:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:21,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:21,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:21,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 11:29:21,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:21,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 11:29:21,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:21,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:21,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:21,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 11:29:21,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:22,138 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 146 proven. 40 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:29:22,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529472072] [2020-10-12 11:29:22,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:29:22,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:29:22,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187599800] [2020-10-12 11:29:22,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:29:22,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:29:22,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:29:22,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:29:22,140 INFO L87 Difference]: Start difference. First operand 31797 states and 45283 transitions. Second operand 8 states. [2020-10-12 11:29:22,282 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:29:23,252 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 11:29:25,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:29:25,262 INFO L93 Difference]: Finished difference Result 54123 states and 77253 transitions. [2020-10-12 11:29:25,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 11:29:25,263 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 334 [2020-10-12 11:29:25,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:29:25,345 INFO L225 Difference]: With dead ends: 54123 [2020-10-12 11:29:25,346 INFO L226 Difference]: Without dead ends: 22493 [2020-10-12 11:29:25,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-12 11:29:25,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22493 states. [2020-10-12 11:29:25,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22493 to 22021. [2020-10-12 11:29:25,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22021 states. [2020-10-12 11:29:25,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22021 states to 22021 states and 28160 transitions. [2020-10-12 11:29:25,844 INFO L78 Accepts]: Start accepts. Automaton has 22021 states and 28160 transitions. Word has length 334 [2020-10-12 11:29:25,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:29:25,844 INFO L479 AbstractCegarLoop]: Abstraction has 22021 states and 28160 transitions. [2020-10-12 11:29:25,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:29:25,844 INFO L276 IsEmpty]: Start isEmpty. Operand 22021 states and 28160 transitions. [2020-10-12 11:29:25,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-12 11:29:25,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:29:25,856 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:29:25,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 11:29:25,856 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:29:25,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:29:25,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1962441229, now seen corresponding path program 1 times [2020-10-12 11:29:25,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:29:25,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274881031] [2020-10-12 11:29:25,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:29:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:25,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:26,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:26,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:30,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:30,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-12 11:29:30,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:29:30,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-12 11:29:30,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:30,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:29:30,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:29:30,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-12 11:29:30,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:32,075 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-10-12 11:29:32,244 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-10-12 11:29:32,433 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2020-10-12 11:29:32,616 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2020-10-12 11:29:32,808 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2020-10-12 11:29:32,953 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2020-10-12 11:29:33,215 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:29:33,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:29:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:33,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:33,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:33,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:29:33,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:33,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:29:33,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:33,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:29:33,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:33,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:29:33,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:33,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:29:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:33,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:33,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:33,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:29:33,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:33,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 11:29:33,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:33,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:29:33,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:33,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:29:33,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:33,571 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-10-12 11:29:33,824 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 75 [2020-10-12 11:29:33,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:29:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:33,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:34,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:34,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-12 11:29:34,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:34,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-12 11:29:34,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:34,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:29:34,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:34,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-12 11:29:34,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:34,525 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-10-12 11:29:34,782 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2020-10-12 11:29:36,489 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 59 proven. 100 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 11:29:36,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274881031] [2020-10-12 11:29:36,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:29:36,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 11:29:36,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051888716] [2020-10-12 11:29:36,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 11:29:36,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:29:36,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 11:29:36,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-10-12 11:29:36,491 INFO L87 Difference]: Start difference. First operand 22021 states and 28160 transitions. Second operand 19 states. [2020-10-12 11:29:36,702 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 11:29:37,190 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 11:29:41,202 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 78 [2020-10-12 11:29:41,411 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2020-10-12 11:29:41,687 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2020-10-12 11:29:42,462 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 175 [2020-10-12 11:29:43,288 WARN L193 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 183 [2020-10-12 11:29:44,604 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 243 DAG size of output: 181 [2020-10-12 11:29:45,941 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 244 DAG size of output: 180 [2020-10-12 11:29:46,254 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2020-10-12 11:29:47,748 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 246 DAG size of output: 178 [2020-10-12 11:29:48,152 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2020-10-12 11:29:48,483 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 55 [2020-10-12 11:29:49,713 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 247 DAG size of output: 177 [2020-10-12 11:29:51,096 WARN L193 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 175 [2020-10-12 11:29:52,233 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 77 [2020-10-12 11:29:55,181 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 97 [2020-10-12 11:29:56,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:29:56,709 INFO L93 Difference]: Finished difference Result 55013 states and 70331 transitions. [2020-10-12 11:29:56,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 11:29:56,710 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 338 [2020-10-12 11:29:56,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:29:56,776 INFO L225 Difference]: With dead ends: 55013 [2020-10-12 11:29:56,776 INFO L226 Difference]: Without dead ends: 39032 [2020-10-12 11:29:56,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=320, Invalid=940, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 11:29:56,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39032 states. [2020-10-12 11:29:57,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39032 to 38637. [2020-10-12 11:29:57,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38637 states. [2020-10-12 11:29:57,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38637 states to 38637 states and 48664 transitions. [2020-10-12 11:29:57,482 INFO L78 Accepts]: Start accepts. Automaton has 38637 states and 48664 transitions. Word has length 338 [2020-10-12 11:29:57,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:29:57,483 INFO L479 AbstractCegarLoop]: Abstraction has 38637 states and 48664 transitions. [2020-10-12 11:29:57,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 11:29:57,483 INFO L276 IsEmpty]: Start isEmpty. Operand 38637 states and 48664 transitions. [2020-10-12 11:29:57,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-12 11:29:57,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:29:57,506 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:29:57,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 11:29:57,506 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:29:57,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:29:57,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1090825637, now seen corresponding path program 1 times [2020-10-12 11:29:57,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:29:57,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366998147] [2020-10-12 11:29:57,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:29:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:57,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:58,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:59,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:02,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:02,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-12 11:30:02,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:30:02,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-12 11:30:02,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:02,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 11:30:02,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:30:02,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-12 11:30:02,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:02,794 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:30:02,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:30:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:02,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:02,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:02,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:30:02,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:02,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 11:30:02,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:02,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:30:02,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:30:02,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:30:02,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:02,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:30:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:02,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:03,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:03,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:30:03,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:03,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-12 11:30:03,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:03,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:30:03,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:30:03,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 11:30:03,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:03,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 11:30:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:03,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:03,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:03,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 11:30:03,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:03,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 11:30:03,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:03,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:30:03,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:30:03,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 11:30:03,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:03,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-12 11:30:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:03,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:03,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:03,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 11:30:03,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:03,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 11:30:03,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:03,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:30:03,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:30:03,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 11:30:03,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:03,490 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 166 proven. 72 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-12 11:30:03,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366998147] [2020-10-12 11:30:03,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:30:03,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 11:30:03,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178411221] [2020-10-12 11:30:03,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 11:30:03,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:30:03,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 11:30:03,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-12 11:30:03,492 INFO L87 Difference]: Start difference. First operand 38637 states and 48664 transitions. Second operand 10 states. [2020-10-12 11:30:03,632 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:30:04,002 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 132 [2020-10-12 11:30:05,061 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 131 [2020-10-12 11:30:05,756 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 130 [2020-10-12 11:30:07,323 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 133