/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 SingleStatement --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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:44:55,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:44:55,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:44:55,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:44:55,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:44:55,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:44:55,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:44:55,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:44:55,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:44:55,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:44:55,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:44:55,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:44:55,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:44:55,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:44:55,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:44:55,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:44:55,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:44:55,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:44:55,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:44:55,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:44:55,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:44:55,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:44:55,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:44:55,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:44:55,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:44:55,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:44:55,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:44:55,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:44:55,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:44:55,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:44:55,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:44:55,175 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:44:55,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:44:55,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:44:55,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:44:55,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:44:55,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:44:55,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:44:55,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:44:55,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:44:55,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:44:55,194 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 [2020-09-24 21:44:55,243 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:44:55,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:44:55,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:44:55,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:44:55,246 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:44:55,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:44:55,246 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:44:55,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:44:55,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:44:55,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:44:55,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:44:55,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:44:55,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:44:55,247 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:44:55,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:44:55,249 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:44:55,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:44:55,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:44:55,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:44:55,250 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:44:55,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:44:55,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:44:55,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:44:55,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:44:55,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:44:55,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:44:55,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:44:55,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:44:55,252 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:44:55,252 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 -> SingleStatement 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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:44:55,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:44:55,728 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:44:55,732 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:44:55,734 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:44:55,734 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:44:55,735 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label22.c [2020-09-24 21:44:55,808 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ecfd9cfc/fff1a779d72d44c3b2d249ea23b6a61b/FLAGfdb779e75 [2020-09-24 21:44:56,422 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:44:56,423 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label22.c [2020-09-24 21:44:56,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ecfd9cfc/fff1a779d72d44c3b2d249ea23b6a61b/FLAGfdb779e75 [2020-09-24 21:44:56,626 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ecfd9cfc/fff1a779d72d44c3b2d249ea23b6a61b [2020-09-24 21:44:56,640 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:44:56,646 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:44:56,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:44:56,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:44:56,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:44:56,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:44:56" (1/1) ... [2020-09-24 21:44:56,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72514f07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:56, skipping insertion in model container [2020-09-24 21:44:56,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:44:56" (1/1) ... [2020-09-24 21:44:56,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:44:56,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:44:57,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:44:57,145 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:44:57,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:44:57,408 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:44:57,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:57 WrapperNode [2020-09-24 21:44:57,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:44:57,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:44:57,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:44:57,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:44:57,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:57" (1/1) ... [2020-09-24 21:44:57,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:57" (1/1) ... [2020-09-24 21:44:57,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:57" (1/1) ... [2020-09-24 21:44:57,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:57" (1/1) ... [2020-09-24 21:44:57,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:57" (1/1) ... [2020-09-24 21:44:57,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:57" (1/1) ... [2020-09-24 21:44:57,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:57" (1/1) ... [2020-09-24 21:44:57,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:44:57,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:44:57,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:44:57,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:44:57,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:57" (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 [2020-09-24 21:44:57,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:44:57,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:44:57,590 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:44:57,590 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:44:57,590 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:44:57,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:44:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:44:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:44:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:44:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:44:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:44:58,919 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:44:58,919 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:44:58,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:44:58 BoogieIcfgContainer [2020-09-24 21:44:58,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:44:58,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:44:58,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:44:58,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:44:58,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:44:56" (1/3) ... [2020-09-24 21:44:58,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739674a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:44:58, skipping insertion in model container [2020-09-24 21:44:58,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:57" (2/3) ... [2020-09-24 21:44:58,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739674a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:44:58, skipping insertion in model container [2020-09-24 21:44:58,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:44:58" (3/3) ... [2020-09-24 21:44:58,937 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label22.c [2020-09-24 21:44:58,950 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:44:58,962 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:44:58,987 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:44:59,024 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:44:59,025 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:44:59,025 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:44:59,025 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:44:59,025 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:44:59,026 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:44:59,026 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:44:59,026 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:44:59,059 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:44:59,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 21:44:59,070 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:59,072 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] [2020-09-24 21:44:59,072 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:59,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:59,081 INFO L82 PathProgramCache]: Analyzing trace with hash 382162911, now seen corresponding path program 1 times [2020-09-24 21:44:59,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:59,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295200814] [2020-09-24 21:44:59,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:59,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:59,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:00,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:00,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 21:45:00,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:00,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 775 [2020-09-24 21:45:00,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:00,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:00,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 21:45:00,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:45:00,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:00,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:00,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:00,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:00,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:00,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 21:45:00,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:00,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:00,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:00,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:00,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:00,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:00,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295200814] [2020-09-24 21:45:00,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:00,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:45:00,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13188352] [2020-09-24 21:45:00,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:45:00,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:00,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:45:00,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:45:00,263 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 21:45:02,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:02,240 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-24 21:45:02,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:45:02,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-09-24 21:45:02,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:02,266 INFO L225 Difference]: With dead ends: 1160 [2020-09-24 21:45:02,266 INFO L226 Difference]: Without dead ends: 631 [2020-09-24 21:45:02,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:45:02,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-24 21:45:02,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-24 21:45:02,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-24 21:45:02,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-24 21:45:02,383 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 56 [2020-09-24 21:45:02,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:02,384 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-24 21:45:02,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:45:02,384 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-24 21:45:02,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-24 21:45:02,393 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:02,393 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:02,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:45:02,394 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:02,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:02,394 INFO L82 PathProgramCache]: Analyzing trace with hash 132408824, now seen corresponding path program 1 times [2020-09-24 21:45:02,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:02,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294821401] [2020-09-24 21:45:02,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:02,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:02,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:02,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:03,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:04,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:04,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:07,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:07,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-24 21:45:07,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:45:07,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 21:45:07,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:07,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:07,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:07,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 21:45:07,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:07,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:07,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:07,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:07,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:07,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:07,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 21:45:07,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:07,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:07,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:07,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:07,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:07,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:07,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:07,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:07,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:07,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:45:07,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:07,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-24 21:45:07,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:07,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:07,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:07,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:45:07,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:07,882 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:07,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294821401] [2020-09-24 21:45:07,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:07,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:45:07,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695244662] [2020-09-24 21:45:07,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:45:07,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:07,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:45:07,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:45:07,886 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 7 states. [2020-09-24 21:45:09,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:09,933 INFO L93 Difference]: Finished difference Result 1330 states and 1655 transitions. [2020-09-24 21:45:09,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 21:45:09,933 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-09-24 21:45:09,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:09,938 INFO L225 Difference]: With dead ends: 1330 [2020-09-24 21:45:09,939 INFO L226 Difference]: Without dead ends: 769 [2020-09-24 21:45:09,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:45:09,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-09-24 21:45:09,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 731. [2020-09-24 21:45:09,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-09-24 21:45:09,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 902 transitions. [2020-09-24 21:45:09,976 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 902 transitions. Word has length 139 [2020-09-24 21:45:09,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:09,976 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 902 transitions. [2020-09-24 21:45:09,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:45:09,977 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 902 transitions. [2020-09-24 21:45:09,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-24 21:45:09,983 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:09,984 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:09,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:45:09,984 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:09,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:09,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1125895043, now seen corresponding path program 1 times [2020-09-24 21:45:09,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:09,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923487273] [2020-09-24 21:45:09,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:10,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:10,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:10,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:10,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:10,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:10,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:12,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:12,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-24 21:45:12,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:45:12,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2451 [2020-09-24 21:45:12,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:12,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:45:12,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:12,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 21:45:12,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:12,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:12,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:12,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:12,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:12,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:12,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 21:45:12,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:12,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:45:12,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:12,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:45:12,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:45:12,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:12,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:12,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:12,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:12,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:12,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:45:12,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:45:12,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-09-24 21:45:12,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:12,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:12,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:12,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:45:12,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:13,299 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:13,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923487273] [2020-09-24 21:45:13,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:13,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:45:13,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810430803] [2020-09-24 21:45:13,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:45:13,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:13,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:45:13,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:45:13,305 INFO L87 Difference]: Start difference. First operand 731 states and 902 transitions. Second operand 9 states. [2020-09-24 21:45:16,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:16,169 INFO L93 Difference]: Finished difference Result 1797 states and 2298 transitions. [2020-09-24 21:45:16,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:45:16,170 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 139 [2020-09-24 21:45:16,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:16,177 INFO L225 Difference]: With dead ends: 1797 [2020-09-24 21:45:16,177 INFO L226 Difference]: Without dead ends: 1081 [2020-09-24 21:45:16,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:45:16,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2020-09-24 21:45:16,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 886. [2020-09-24 21:45:16,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 886 states. [2020-09-24 21:45:16,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1117 transitions. [2020-09-24 21:45:16,214 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1117 transitions. Word has length 139 [2020-09-24 21:45:16,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:16,214 INFO L479 AbstractCegarLoop]: Abstraction has 886 states and 1117 transitions. [2020-09-24 21:45:16,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:45:16,215 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1117 transitions. [2020-09-24 21:45:16,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-24 21:45:16,231 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:16,231 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:16,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:45:16,232 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:16,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:16,232 INFO L82 PathProgramCache]: Analyzing trace with hash -971500489, now seen corresponding path program 1 times [2020-09-24 21:45:16,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:16,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384871627] [2020-09-24 21:45:16,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:16,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:16,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:16,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:19,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:21,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:21,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-24 21:45:21,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:45:21,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-24 21:45:21,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:21,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:21,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:45:21,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-24 21:45:21,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:21,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:21,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:21,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:21,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:21,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:21,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 21:45:21,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:21,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:21,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:21,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:45:21,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:21,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:21,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:21,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:21,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 21:45:21,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:21,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-24 21:45:21,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:21,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:21,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:21,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-24 21:45:21,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:21,792 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:21,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384871627] [2020-09-24 21:45:21,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:21,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:45:21,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487115385] [2020-09-24 21:45:21,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:45:21,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:21,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:45:21,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:45:21,797 INFO L87 Difference]: Start difference. First operand 886 states and 1117 transitions. Second operand 8 states. [2020-09-24 21:45:23,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:23,853 INFO L93 Difference]: Finished difference Result 1941 states and 2571 transitions. [2020-09-24 21:45:23,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:45:23,855 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 188 [2020-09-24 21:45:23,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:23,865 INFO L225 Difference]: With dead ends: 1941 [2020-09-24 21:45:23,865 INFO L226 Difference]: Without dead ends: 1220 [2020-09-24 21:45:23,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:45:23,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2020-09-24 21:45:23,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1206. [2020-09-24 21:45:23,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1206 states. [2020-09-24 21:45:23,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1518 transitions. [2020-09-24 21:45:23,915 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1518 transitions. Word has length 188 [2020-09-24 21:45:23,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:23,917 INFO L479 AbstractCegarLoop]: Abstraction has 1206 states and 1518 transitions. [2020-09-24 21:45:23,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:45:23,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1518 transitions. [2020-09-24 21:45:23,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-24 21:45:23,923 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:23,923 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:45:23,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:45:23,924 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:23,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:23,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1538845177, now seen corresponding path program 1 times [2020-09-24 21:45:23,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:23,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169888896] [2020-09-24 21:45:23,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:24,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:24,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:24,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:24,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:24,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:25,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:28,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:28,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-24 21:45:28,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:45:28,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-24 21:45:28,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:28,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:45:28,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:28,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 21:45:28,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:29,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:29,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:29,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:29,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:29,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:29,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 21:45:29,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:29,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:29,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:29,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:45:29,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:29,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:29,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:29,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:29,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:45:29,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:29,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-09-24 21:45:29,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:29,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:45:29,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:29,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:45:29,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:29,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 21:45:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:29,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:29,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:29,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:29,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 21:45:29,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:29,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-24 21:45:29,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:29,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:29,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:29,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 21:45:29,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:45:30,501 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 99 proven. 65 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:45:30,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169888896] [2020-09-24 21:45:30,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:30,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:45:30,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898560332] [2020-09-24 21:45:30,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:45:30,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:30,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:45:30,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:45:30,504 INFO L87 Difference]: Start difference. First operand 1206 states and 1518 transitions. Second operand 13 states. [2020-09-24 21:45:34,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:34,253 INFO L93 Difference]: Finished difference Result 2325 states and 3019 transitions. [2020-09-24 21:45:34,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 21:45:34,253 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 237 [2020-09-24 21:45:34,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:34,263 INFO L225 Difference]: With dead ends: 2325 [2020-09-24 21:45:34,263 INFO L226 Difference]: Without dead ends: 1256 [2020-09-24 21:45:34,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2020-09-24 21:45:34,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2020-09-24 21:45:34,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1208. [2020-09-24 21:45:34,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1208 states. [2020-09-24 21:45:34,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1519 transitions. [2020-09-24 21:45:34,317 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1519 transitions. Word has length 237 [2020-09-24 21:45:34,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:34,317 INFO L479 AbstractCegarLoop]: Abstraction has 1208 states and 1519 transitions. [2020-09-24 21:45:34,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:45:34,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1519 transitions. [2020-09-24 21:45:34,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-09-24 21:45:34,322 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:34,322 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:45:34,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:45:34,323 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:34,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:34,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1313874927, now seen corresponding path program 1 times [2020-09-24 21:45:34,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:34,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279621030] [2020-09-24 21:45:34,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:34,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:34,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:34,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:35,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:35,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:35,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:37,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:38,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:39,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:39,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-09-24 21:45:39,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:45:39,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-24 21:45:39,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:39,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:45:39,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:39,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-09-24 21:45:39,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:39,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:39,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:39,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:39,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:39,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:39,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:39,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:45:39,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:39,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:39,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:39,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:39,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:39,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:39,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:39,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:39,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:45:39,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:39,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-24 21:45:39,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:39,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:39,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:39,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:45:39,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:39,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:45:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:39,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:39,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:39,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 21:45:39,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:39,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-24 21:45:39,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 21:45:39,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:40,034 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-24 21:45:40,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279621030] [2020-09-24 21:45:40,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:40,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:45:40,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733981823] [2020-09-24 21:45:40,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:45:40,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:40,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:45:40,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:45:40,039 INFO L87 Difference]: Start difference. First operand 1208 states and 1519 transitions. Second operand 9 states.