/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/Problem13_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:37:45,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:37:45,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:37:45,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:37:45,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:37:45,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:37:45,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:37:45,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:37:45,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:37:45,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:37:45,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:37:45,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:37:45,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:37:45,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:37:45,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:37:45,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:37:45,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:37:45,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:37:45,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:37:45,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:37:45,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:37:45,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:37:45,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:37:45,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:37:45,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:37:45,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:37:45,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:37:45,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:37:45,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:37:45,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:37:45,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:37:45,175 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:37:45,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:37:45,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:37:45,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:37:45,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:37:45,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:37:45,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:37:45,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:37:45,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:37:45,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:37:45,184 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 13:37:45,236 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:37:45,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:37:45,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:37:45,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:37:45,242 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:37:45,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:37:45,243 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:37:45,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:37:45,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:37:45,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:37:45,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:37:45,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:37:45,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:37:45,246 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:37:45,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:37:45,246 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:37:45,246 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:37:45,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:37:45,247 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:37:45,248 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:37:45,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:37:45,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:37:45,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:37:45,249 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:37:45,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:37:45,250 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:37:45,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:37:45,250 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:37:45,250 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:37:45,250 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 13:37:45,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:37:45,614 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:37:45,617 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:37:45,619 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:37:45,619 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:37:45,620 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label19.c [2020-10-12 13:37:45,690 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a177e7f72/12b4dfddb54941f3bf564a938b00048b/FLAGdc0510099 [2020-10-12 13:37:46,539 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:37:46,539 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label19.c [2020-10-12 13:37:46,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a177e7f72/12b4dfddb54941f3bf564a938b00048b/FLAGdc0510099 [2020-10-12 13:37:46,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a177e7f72/12b4dfddb54941f3bf564a938b00048b [2020-10-12 13:37:46,618 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:37:46,620 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:37:46,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:37:46,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:37:46,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:37:46,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:37:46" (1/1) ... [2020-10-12 13:37:46,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14e3b0e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:37:46, skipping insertion in model container [2020-10-12 13:37:46,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:37:46" (1/1) ... [2020-10-12 13:37:46,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:37:46,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:37:48,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:37:48,812 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:37:49,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:37:49,914 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:37:49,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:37:49 WrapperNode [2020-10-12 13:37:49,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:37:49,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:37:49,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:37:49,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:37:49,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:37:49" (1/1) ... [2020-10-12 13:37:49,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:37:49" (1/1) ... [2020-10-12 13:37:50,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:37:49" (1/1) ... [2020-10-12 13:37:50,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:37:49" (1/1) ... [2020-10-12 13:37:50,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:37:49" (1/1) ... [2020-10-12 13:37:50,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:37:49" (1/1) ... [2020-10-12 13:37:50,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:37:49" (1/1) ... [2020-10-12 13:37:50,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:37:50,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:37:50,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:37:50,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:37:50,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:37:49" (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 13:37:50,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:37:50,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:37:50,449 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:37:50,450 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 13:37:50,450 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 13:37:50,450 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 13:37:50,450 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:37:50,451 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:37:50,452 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 13:37:50,452 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 13:37:50,452 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 13:37:50,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:37:50,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:37:50,453 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:37:50,453 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:37:50,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:37:50,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:38:02,343 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:38:02,344 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:38:02,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:38:02 BoogieIcfgContainer [2020-10-12 13:38:02,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:38:02,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:38:02,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:38:02,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:38:02,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:37:46" (1/3) ... [2020-10-12 13:38:02,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c373fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:38:02, skipping insertion in model container [2020-10-12 13:38:02,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:37:49" (2/3) ... [2020-10-12 13:38:02,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c373fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:38:02, skipping insertion in model container [2020-10-12 13:38:02,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:38:02" (3/3) ... [2020-10-12 13:38:02,370 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label19.c [2020-10-12 13:38:02,385 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:38:02,396 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:38:02,413 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:38:02,445 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:38:02,445 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:38:02,445 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:38:02,445 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:38:02,446 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:38:02,446 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:38:02,446 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:38:02,446 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:38:02,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-12 13:38:02,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 13:38:02,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:38:02,497 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] [2020-10-12 13:38:02,498 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:38:02,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:38:02,505 INFO L82 PathProgramCache]: Analyzing trace with hash -887553576, now seen corresponding path program 1 times [2020-10-12 13:38:02,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:38:02,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699917503] [2020-10-12 13:38:02,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:38:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:38:02,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:38:03,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:38:03,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 13:38:03,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:38:03,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 480 [2020-10-12 13:38:03,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:38:03,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:38:03,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:38:03,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 13:38:03,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:38:03,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:38:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:38:03,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:38:03,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:38:03,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:38:03,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:38:03,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 13:38:03,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:38:03,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:38:03,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:38:03,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:38:03,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:38:03,303 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 13:38:03,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699917503] [2020-10-12 13:38:03,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:38:03,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 13:38:03,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134303752] [2020-10-12 13:38:03,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 13:38:03,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:38:03,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 13:38:03,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 13:38:03,340 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-12 13:38:21,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:38:21,613 INFO L93 Difference]: Finished difference Result 3152 states and 5831 transitions. [2020-10-12 13:38:21,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:38:21,616 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-12 13:38:21,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:38:21,658 INFO L225 Difference]: With dead ends: 3152 [2020-10-12 13:38:21,659 INFO L226 Difference]: Without dead ends: 1954 [2020-10-12 13:38:21,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:38:21,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-10-12 13:38:21,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1885. [2020-10-12 13:38:21,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-10-12 13:38:21,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 3103 transitions. [2020-10-12 13:38:21,854 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 3103 transitions. Word has length 23 [2020-10-12 13:38:21,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:38:21,855 INFO L479 AbstractCegarLoop]: Abstraction has 1885 states and 3103 transitions. [2020-10-12 13:38:21,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 13:38:21,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 3103 transitions. [2020-10-12 13:38:21,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-12 13:38:21,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:38:21,865 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:38:21,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:38:21,866 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:38:21,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:38:21,867 INFO L82 PathProgramCache]: Analyzing trace with hash -2128100160, now seen corresponding path program 1 times [2020-10-12 13:38:21,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:38:21,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663866116] [2020-10-12 13:38:21,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:38:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:38:21,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:38:22,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:38:23,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:38:23,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 13:38:23,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:38:23,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1085 [2020-10-12 13:38:23,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:38:23,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:38:23,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:38:23,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:38:23,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:38:23,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:38:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:38:23,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:38:23,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:38:23,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:38:23,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:38:23,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 13:38:23,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:38:23,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:38:23,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:38:23,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:38:23,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:38:23,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:38:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:38:23,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:38:23,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:38:23,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 13:38:23,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:38:23,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-12 13:38:23,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:38:23,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:38:23,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:38:23,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 13:38:23,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:38:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:38:23,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663866116] [2020-10-12 13:38:23,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:38:23,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:38:23,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291086990] [2020-10-12 13:38:23,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:38:23,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:38:23,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:38:23,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:38:23,468 INFO L87 Difference]: Start difference. First operand 1885 states and 3103 transitions. Second operand 7 states. [2020-10-12 13:38:45,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:38:45,952 INFO L93 Difference]: Finished difference Result 5537 states and 9158 transitions. [2020-10-12 13:38:45,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:38:45,953 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-10-12 13:38:45,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:38:45,975 INFO L225 Difference]: With dead ends: 5537 [2020-10-12 13:38:45,976 INFO L226 Difference]: Without dead ends: 3658 [2020-10-12 13:38:45,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:38:45,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3658 states. [2020-10-12 13:38:46,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3658 to 3597. [2020-10-12 13:38:46,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3597 states. [2020-10-12 13:38:46,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 5110 transitions. [2020-10-12 13:38:46,093 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 5110 transitions. Word has length 93 [2020-10-12 13:38:46,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:38:46,094 INFO L479 AbstractCegarLoop]: Abstraction has 3597 states and 5110 transitions. [2020-10-12 13:38:46,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:38:46,094 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 5110 transitions. [2020-10-12 13:38:46,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 13:38:46,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:38:46,098 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:38:46,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:38:46,098 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:38:46,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:38:46,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1752216790, now seen corresponding path program 1 times [2020-10-12 13:38:46,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:38:46,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4752107] [2020-10-12 13:38:46,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:38:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:38:46,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:38:46,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:38:47,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:38:47,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 13:38:47,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:38:47,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 930 [2020-10-12 13:38:47,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:38:47,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:38:47,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:38:47,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 13:38:47,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:38:47,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:38:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:38:47,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:38:47,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:38:47,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:38:47,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:38:47,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:38:47,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:38:47,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:38:47,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:38:47,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:38:47,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:38:47,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:38:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:38:47,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:38:47,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:38:47,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 13:38:47,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:38:47,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-12 13:38:47,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:38:47,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:38:47,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:38:47,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 13:38:47,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:38:47,504 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:38:47,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4752107] [2020-10-12 13:38:47,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:38:47,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:38:47,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868167817] [2020-10-12 13:38:47,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:38:47,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:38:47,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:38:47,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:38:47,507 INFO L87 Difference]: Start difference. First operand 3597 states and 5110 transitions. Second operand 7 states. [2020-10-12 13:39:08,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:39:08,205 INFO L93 Difference]: Finished difference Result 10854 states and 15642 transitions. [2020-10-12 13:39:08,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:39:08,207 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2020-10-12 13:39:08,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:39:08,247 INFO L225 Difference]: With dead ends: 10854 [2020-10-12 13:39:08,248 INFO L226 Difference]: Without dead ends: 7263 [2020-10-12 13:39:08,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:39:08,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7263 states. [2020-10-12 13:39:08,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7263 to 7123. [2020-10-12 13:39:08,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7123 states. [2020-10-12 13:39:08,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7123 states to 7123 states and 9591 transitions. [2020-10-12 13:39:08,477 INFO L78 Accepts]: Start accepts. Automaton has 7123 states and 9591 transitions. Word has length 113 [2020-10-12 13:39:08,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:39:08,478 INFO L479 AbstractCegarLoop]: Abstraction has 7123 states and 9591 transitions. [2020-10-12 13:39:08,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:39:08,479 INFO L276 IsEmpty]: Start isEmpty. Operand 7123 states and 9591 transitions. [2020-10-12 13:39:08,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 13:39:08,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:39:08,488 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:39:08,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:39:08,488 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:39:08,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:39:08,489 INFO L82 PathProgramCache]: Analyzing trace with hash -486434495, now seen corresponding path program 1 times [2020-10-12 13:39:08,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:39:08,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477594305] [2020-10-12 13:39:08,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:39:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:39:08,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:39:08,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:39:08,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:39:09,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:39:09,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 13:39:09,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:39:09,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1424 [2020-10-12 13:39:09,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:39:09,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:39:09,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:39:09,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-12 13:39:09,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:39:10,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:39:10,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:39:10,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:39:10,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:39:10,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:39:10,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:39:10,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:39:10,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:39:10,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:39:10,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:39:10,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:39:10,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:39:10,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:39:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:39:10,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:39:10,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:39:10,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 13:39:10,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:39:10,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-12 13:39:10,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:39:10,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:39:10,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:39:10,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 13:39:10,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:39:10,478 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:39:10,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477594305] [2020-10-12 13:39:10,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:39:10,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:39:10,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866221932] [2020-10-12 13:39:10,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:39:10,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:39:10,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:39:10,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:39:10,482 INFO L87 Difference]: Start difference. First operand 7123 states and 9591 transitions. Second operand 6 states. [2020-10-12 13:39:35,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:39:35,958 INFO L93 Difference]: Finished difference Result 14470 states and 20215 transitions. [2020-10-12 13:39:35,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 13:39:35,966 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2020-10-12 13:39:35,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:39:36,005 INFO L225 Difference]: With dead ends: 14470 [2020-10-12 13:39:36,005 INFO L226 Difference]: Without dead ends: 7353 [2020-10-12 13:39:36,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:39:36,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7353 states. [2020-10-12 13:39:36,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7353 to 7282. [2020-10-12 13:39:36,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7282 states. [2020-10-12 13:39:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7282 states to 7282 states and 9367 transitions. [2020-10-12 13:39:36,218 INFO L78 Accepts]: Start accepts. Automaton has 7282 states and 9367 transitions. Word has length 116 [2020-10-12 13:39:36,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:39:36,220 INFO L479 AbstractCegarLoop]: Abstraction has 7282 states and 9367 transitions. [2020-10-12 13:39:36,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:39:36,220 INFO L276 IsEmpty]: Start isEmpty. Operand 7282 states and 9367 transitions. [2020-10-12 13:39:36,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-12 13:39:36,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:39:36,227 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:39:36,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:39:36,227 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:39:36,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:39:36,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1256807632, now seen corresponding path program 1 times [2020-10-12 13:39:36,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:39:36,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870784324] [2020-10-12 13:39:36,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:39:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:39:36,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:39:36,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:39:36,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-12 13:39:36,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:39:36,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-12 13:39:36,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:39:36,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:39:36,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-12 13:39:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 13:39:36,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:39:36,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:39:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:39:36,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:39:36,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:39:36,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:39:36,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:39:36,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:39:36,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:39:36,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:39:36,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:39:36,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:39:36,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:39:36,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:39:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:39:36,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:39:36,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:39:36,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 13:39:36,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:39:36,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-12 13:39:36,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:39:36,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:39:36,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:39:36,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 13:39:36,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:39:37,042 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:39:37,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870784324] [2020-10-12 13:39:37,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:39:37,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:39:37,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558243837] [2020-10-12 13:39:37,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:39:37,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:39:37,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:39:37,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:39:37,045 INFO L87 Difference]: Start difference. First operand 7282 states and 9367 transitions. Second operand 5 states. [2020-10-12 13:40:00,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:40:00,983 INFO L93 Difference]: Finished difference Result 15457 states and 20773 transitions. [2020-10-12 13:40:00,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:40:00,985 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-12 13:40:00,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:40:01,020 INFO L225 Difference]: With dead ends: 15457 [2020-10-12 13:40:01,021 INFO L226 Difference]: Without dead ends: 8984 [2020-10-12 13:40:01,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:40:01,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8984 states. [2020-10-12 13:40:01,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8984 to 8882. [2020-10-12 13:40:01,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8882 states. [2020-10-12 13:40:01,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8882 states to 8882 states and 11380 transitions. [2020-10-12 13:40:01,214 INFO L78 Accepts]: Start accepts. Automaton has 8882 states and 11380 transitions. Word has length 152 [2020-10-12 13:40:01,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:40:01,215 INFO L479 AbstractCegarLoop]: Abstraction has 8882 states and 11380 transitions. [2020-10-12 13:40:01,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:40:01,215 INFO L276 IsEmpty]: Start isEmpty. Operand 8882 states and 11380 transitions. [2020-10-12 13:40:01,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-12 13:40:01,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:40:01,219 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:40:01,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:40:01,219 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:40:01,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:40:01,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1755778456, now seen corresponding path program 1 times [2020-10-12 13:40:01,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:40:01,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037470067] [2020-10-12 13:40:01,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:40:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:40:01,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:01,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:02,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:03,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:40:03,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-12 13:40:03,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:40:03,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2612 [2020-10-12 13:40:03,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:40:03,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:40:03,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:40:03,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-12 13:40:03,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:40:03,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:40:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:40:03,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:03,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:40:03,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:40:03,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:40:03,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:40:03,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:40:03,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:40:03,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:40:03,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:40:03,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:40:04,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:40:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:40:04,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:04,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:40:04,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 13:40:04,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:40:04,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-12 13:40:04,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:40:04,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:40:04,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:40:04,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 13:40:04,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:40:04,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 13:40:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:40:04,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:04,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:40:04,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 13:40:04,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:40:04,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 13:40:04,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:40:04,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:40:04,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-12 13:40:04,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:40:04,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:40:04,875 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 32 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:40:04,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037470067] [2020-10-12 13:40:04,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:40:04,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:40:04,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401967401] [2020-10-12 13:40:04,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:40:04,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:40:04,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:40:04,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:40:04,881 INFO L87 Difference]: Start difference. First operand 8882 states and 11380 transitions. Second operand 7 states. [2020-10-12 13:40:33,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:40:33,401 INFO L93 Difference]: Finished difference Result 17289 states and 22434 transitions. [2020-10-12 13:40:33,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 13:40:33,412 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-10-12 13:40:33,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:40:33,453 INFO L225 Difference]: With dead ends: 17289 [2020-10-12 13:40:33,453 INFO L226 Difference]: Without dead ends: 9216 [2020-10-12 13:40:33,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:40:33,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9216 states. [2020-10-12 13:40:33,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9216 to 8947. [2020-10-12 13:40:33,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8947 states. [2020-10-12 13:40:33,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8947 states to 8947 states and 11517 transitions. [2020-10-12 13:40:33,678 INFO L78 Accepts]: Start accepts. Automaton has 8947 states and 11517 transitions. Word has length 193 [2020-10-12 13:40:33,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:40:33,679 INFO L479 AbstractCegarLoop]: Abstraction has 8947 states and 11517 transitions. [2020-10-12 13:40:33,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:40:33,679 INFO L276 IsEmpty]: Start isEmpty. Operand 8947 states and 11517 transitions. [2020-10-12 13:40:33,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-12 13:40:33,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:40:33,684 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:40:33,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:40:33,685 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:40:33,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:40:33,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1452595272, now seen corresponding path program 1 times [2020-10-12 13:40:33,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:40:33,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440846838] [2020-10-12 13:40:33,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:40:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:40:33,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:34,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:34,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:34,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:40:34,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-12 13:40:34,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:40:34,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1200 [2020-10-12 13:40:34,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:40:34,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:40:34,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 13:40:34,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 13:40:34,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:40:35,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:40:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:40:35,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:35,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:40:35,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:40:35,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:40:35,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:40:35,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:40:35,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:40:35,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:40:35,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:40:35,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:40:35,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:40:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:40:35,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:35,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:40:35,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 13:40:35,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:40:35,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 13:40:35,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:40:35,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:40:35,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:40:35,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:40:35,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:40:35,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 13:40:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:40:35,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:35,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:35,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:40:35,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 13:40:35,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:40:35,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-12 13:40:35,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:40:35,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:40:35,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:40:35,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 13:40:35,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:40:35,630 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 100 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:40:35,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440846838] [2020-10-12 13:40:35,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:40:35,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:40:35,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200816041] [2020-10-12 13:40:35,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:40:35,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:40:35,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:40:35,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:40:35,634 INFO L87 Difference]: Start difference. First operand 8947 states and 11517 transitions. Second operand 7 states. [2020-10-12 13:41:05,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:41:05,292 INFO L93 Difference]: Finished difference Result 18002 states and 24156 transitions. [2020-10-12 13:41:05,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 13:41:05,295 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 200 [2020-10-12 13:41:05,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:41:05,336 INFO L225 Difference]: With dead ends: 18002 [2020-10-12 13:41:05,336 INFO L226 Difference]: Without dead ends: 9864 [2020-10-12 13:41:05,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:41:05,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9864 states. [2020-10-12 13:41:05,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9864 to 9778. [2020-10-12 13:41:05,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9778 states. [2020-10-12 13:41:05,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9778 states to 9778 states and 12965 transitions. [2020-10-12 13:41:05,612 INFO L78 Accepts]: Start accepts. Automaton has 9778 states and 12965 transitions. Word has length 200 [2020-10-12 13:41:05,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:41:05,613 INFO L479 AbstractCegarLoop]: Abstraction has 9778 states and 12965 transitions. [2020-10-12 13:41:05,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:41:05,613 INFO L276 IsEmpty]: Start isEmpty. Operand 9778 states and 12965 transitions. [2020-10-12 13:41:05,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-12 13:41:05,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:41:05,618 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:41:05,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:41:05,619 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:41:05,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:41:05,619 INFO L82 PathProgramCache]: Analyzing trace with hash -752176889, now seen corresponding path program 1 times [2020-10-12 13:41:05,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:41:05,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350962093] [2020-10-12 13:41:05,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:41:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:41:05,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:05,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:06,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:06,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:41:06,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-12 13:41:06,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:41:06,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 924 [2020-10-12 13:41:06,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:41:06,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:41:06,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 13:41:06,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 13:41:06,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:41:06,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:41:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:41:06,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:06,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:41:06,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:41:06,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:41:06,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:41:06,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:41:06,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:41:06,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:41:06,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:41:06,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:41:06,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:41:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:41:06,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:06,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:41:06,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 13:41:06,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:41:06,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-12 13:41:06,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:41:06,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:41:06,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:41:06,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:41:06,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:41:06,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 13:41:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:41:06,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:06,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:07,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:41:07,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:41:07,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:41:07,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-12 13:41:07,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:41:07,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:41:07,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:41:07,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 13:41:07,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:41:07,422 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 97 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:41:07,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350962093] [2020-10-12 13:41:07,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:41:07,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:41:07,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969036404] [2020-10-12 13:41:07,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:41:07,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:41:07,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:41:07,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:41:07,426 INFO L87 Difference]: Start difference. First operand 9778 states and 12965 transitions. Second operand 7 states.