/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:52:58,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:52:58,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:52:58,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:52:58,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:52:58,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:52:58,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:52:58,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:52:58,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:52:58,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:52:58,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:52:58,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:52:58,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:52:58,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:52:58,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:52:58,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:52:58,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:52:58,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:52:58,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:52:58,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:52:58,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:52:58,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:52:58,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:52:58,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:52:58,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:52:58,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:52:58,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:52:58,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:52:58,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:52:58,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:52:58,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:52:58,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:52:58,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:52:58,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:52:58,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:52:58,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:52:58,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:52:58,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:52:58,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:52:58,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:52:58,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:52:58,211 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 21:52:58,258 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:52:58,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:52:58,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:52:58,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:52:58,261 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:52:58,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:52:58,262 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:52:58,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:52:58,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:52:58,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:52:58,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:52:58,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:52:58,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:52:58,265 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:52:58,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:52:58,266 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:52:58,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:52:58,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:52:58,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:52:58,266 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:52:58,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:52:58,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:52:58,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:52:58,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:52:58,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:52:58,268 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:52:58,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:52:58,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:52:58,268 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:52:58,268 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:52:58,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:52:58,592 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:52:58,596 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:52:58,597 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:52:58,598 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:52:58,598 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label06.c [2020-10-14 21:52:58,657 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fe38e6a4/3ec492b62b9641338cebc5754fc9ab40/FLAG9b32d690d [2020-10-14 21:52:59,378 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:52:59,378 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label06.c [2020-10-14 21:52:59,406 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fe38e6a4/3ec492b62b9641338cebc5754fc9ab40/FLAG9b32d690d [2020-10-14 21:52:59,528 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fe38e6a4/3ec492b62b9641338cebc5754fc9ab40 [2020-10-14 21:52:59,541 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:52:59,543 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:52:59,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:52:59,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:52:59,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:52:59,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:52:59" (1/1) ... [2020-10-14 21:52:59,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20e20dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:52:59, skipping insertion in model container [2020-10-14 21:52:59,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:52:59" (1/1) ... [2020-10-14 21:52:59,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:52:59,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:53:00,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:53:00,728 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:53:01,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:53:01,124 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:53:01,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:01 WrapperNode [2020-10-14 21:53:01,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:53:01,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:53:01,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:53:01,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:53:01,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:01" (1/1) ... [2020-10-14 21:53:01,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:01" (1/1) ... [2020-10-14 21:53:01,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:01" (1/1) ... [2020-10-14 21:53:01,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:01" (1/1) ... [2020-10-14 21:53:01,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:01" (1/1) ... [2020-10-14 21:53:01,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:01" (1/1) ... [2020-10-14 21:53:01,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:01" (1/1) ... [2020-10-14 21:53:01,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:53:01,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:53:01,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:53:01,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:53:01,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:53:01,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:53:01,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:53:01,459 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:53:01,459 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:53:01,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:53:01,459 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:53:01,460 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:53:01,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:53:01,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:53:01,461 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:53:01,462 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:53:01,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:53:01,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:53:07,398 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:53:07,399 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:53:07,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:53:07 BoogieIcfgContainer [2020-10-14 21:53:07,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:53:07,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:53:07,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:53:07,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:53:07,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:52:59" (1/3) ... [2020-10-14 21:53:07,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3b73df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:53:07, skipping insertion in model container [2020-10-14 21:53:07,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:01" (2/3) ... [2020-10-14 21:53:07,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3b73df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:53:07, skipping insertion in model container [2020-10-14 21:53:07,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:53:07" (3/3) ... [2020-10-14 21:53:07,416 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label06.c [2020-10-14 21:53:07,427 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:53:07,436 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:53:07,451 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:53:07,477 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:53:07,477 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:53:07,478 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:53:07,478 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:53:07,478 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:53:07,478 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:53:07,478 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:53:07,478 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:53:07,504 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 21:53:07,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 21:53:07,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:53:07,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:53:07,516 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:53:07,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:53:07,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1090082560, now seen corresponding path program 1 times [2020-10-14 21:53:07,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:53:07,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407777266] [2020-10-14 21:53:07,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:53:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:07,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:08,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:08,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:53:08,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:08,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-10-14 21:53:08,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:08,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:08,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:53:08,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:53:08,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 21:53:08,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:53:08,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:53:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:08,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:08,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:08,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:53:08,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:08,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:53:08,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:08,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:08,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:53:08,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:08,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:53:08,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:08,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:53:08,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407777266] [2020-10-14 21:53:08,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:53:08,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:53:08,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096315345] [2020-10-14 21:53:08,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:53:08,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:53:08,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:53:08,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:53:08,437 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 21:53:14,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:53:14,225 INFO L93 Difference]: Finished difference Result 1224 states and 2200 transitions. [2020-10-14 21:53:14,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:53:14,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-14 21:53:14,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:53:14,248 INFO L225 Difference]: With dead ends: 1224 [2020-10-14 21:53:14,249 INFO L226 Difference]: Without dead ends: 708 [2020-10-14 21:53:14,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:53:14,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-10-14 21:53:14,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 694. [2020-10-14 21:53:14,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-14 21:53:14,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1080 transitions. [2020-10-14 21:53:14,355 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1080 transitions. Word has length 62 [2020-10-14 21:53:14,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:53:14,356 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1080 transitions. [2020-10-14 21:53:14,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:53:14,357 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1080 transitions. [2020-10-14 21:53:14,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 21:53:14,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:53:14,363 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:53:14,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:53:14,364 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:53:14,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:53:14,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1429336927, now seen corresponding path program 1 times [2020-10-14 21:53:14,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:53:14,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664897653] [2020-10-14 21:53:14,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:53:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:14,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:14,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:15,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:16,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:16,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:16,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 21:53:16,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:53:16,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1844 [2020-10-14 21:53:16,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:16,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:53:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:53:16,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 21:53:16,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:53:16,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:53:16,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:16,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:16,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:16,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:53:16,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:16,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:53:16,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:16,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:16,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:53:16,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:16,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:53:16,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:16,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:53:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:16,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:16,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:16,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:16,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 21:53:16,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:53:16,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 21:53:16,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:16,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:16,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:53:16,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:16,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 21:53:16,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:16,668 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:53:16,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664897653] [2020-10-14 21:53:16,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:53:16,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:53:16,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247737357] [2020-10-14 21:53:16,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:53:16,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:53:16,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:53:16,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:53:16,673 INFO L87 Difference]: Start difference. First operand 694 states and 1080 transitions. Second operand 6 states. [2020-10-14 21:53:26,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:53:26,480 INFO L93 Difference]: Finished difference Result 2018 states and 3286 transitions. [2020-10-14 21:53:26,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:53:26,481 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2020-10-14 21:53:26,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:53:26,495 INFO L225 Difference]: With dead ends: 2018 [2020-10-14 21:53:26,495 INFO L226 Difference]: Without dead ends: 1330 [2020-10-14 21:53:26,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:53:26,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2020-10-14 21:53:26,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1326. [2020-10-14 21:53:26,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1326 states. [2020-10-14 21:53:26,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1890 transitions. [2020-10-14 21:53:26,582 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1890 transitions. Word has length 132 [2020-10-14 21:53:26,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:53:26,585 INFO L479 AbstractCegarLoop]: Abstraction has 1326 states and 1890 transitions. [2020-10-14 21:53:26,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:53:26,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1890 transitions. [2020-10-14 21:53:26,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-14 21:53:26,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:53:26,596 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:53:26,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:53:26,597 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:53:26,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:53:26,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1356443063, now seen corresponding path program 1 times [2020-10-14 21:53:26,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:53:26,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077827655] [2020-10-14 21:53:26,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:53:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:26,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:27,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:27,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:27,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 21:53:27,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:53:27,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1320 [2020-10-14 21:53:27,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:27,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:27,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:53:27,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:53:27,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 21:53:27,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:53:28,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:53:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:28,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:28,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:28,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:53:28,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:28,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:53:28,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:28,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:28,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:53:28,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:28,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:53:28,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:28,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:53:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:28,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:28,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:28,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:53:28,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:28,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-14 21:53:28,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:28,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:28,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:53:28,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:53:28,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 21:53:28,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:28,553 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:53:28,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077827655] [2020-10-14 21:53:28,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:53:28,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:53:28,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998581534] [2020-10-14 21:53:28,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:53:28,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:53:28,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:53:28,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:53:28,558 INFO L87 Difference]: Start difference. First operand 1326 states and 1890 transitions. Second operand 7 states. [2020-10-14 21:53:38,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:53:38,272 INFO L93 Difference]: Finished difference Result 3322 states and 4984 transitions. [2020-10-14 21:53:38,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:53:38,273 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2020-10-14 21:53:38,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:53:38,295 INFO L225 Difference]: With dead ends: 3322 [2020-10-14 21:53:38,295 INFO L226 Difference]: Without dead ends: 2309 [2020-10-14 21:53:38,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:53:38,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2309 states. [2020-10-14 21:53:38,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2309 to 1973. [2020-10-14 21:53:38,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1973 states. [2020-10-14 21:53:38,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 2645 transitions. [2020-10-14 21:53:38,373 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 2645 transitions. Word has length 191 [2020-10-14 21:53:38,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:53:38,374 INFO L479 AbstractCegarLoop]: Abstraction has 1973 states and 2645 transitions. [2020-10-14 21:53:38,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:53:38,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 2645 transitions. [2020-10-14 21:53:38,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-14 21:53:38,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:53:38,381 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:53:38,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:53:38,381 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:53:38,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:53:38,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1578016499, now seen corresponding path program 1 times [2020-10-14 21:53:38,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:53:38,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989365907] [2020-10-14 21:53:38,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:53:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:38,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:38,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:40,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:40,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-14 21:53:40,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:53:40,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1793 [2020-10-14 21:53:40,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:40,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:40,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:53:40,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:53:40,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 340 [2020-10-14 21:53:40,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:40,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:53:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:40,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:40,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:40,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:53:40,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:40,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:53:40,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:40,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:40,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:53:40,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:40,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:53:40,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:40,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:53:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:40,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:41,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:41,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:53:41,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:41,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-10-14 21:53:41,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:41,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:41,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:53:41,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:53:41,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-14 21:53:41,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:41,744 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:53:41,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989365907] [2020-10-14 21:53:41,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:53:41,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:53:41,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810323348] [2020-10-14 21:53:41,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:53:41,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:53:41,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:53:41,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:53:41,749 INFO L87 Difference]: Start difference. First operand 1973 states and 2645 transitions. Second operand 6 states. [2020-10-14 21:53:50,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:53:50,475 INFO L93 Difference]: Finished difference Result 5544 states and 7552 transitions. [2020-10-14 21:53:50,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:53:50,476 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 336 [2020-10-14 21:53:50,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:53:50,497 INFO L225 Difference]: With dead ends: 5544 [2020-10-14 21:53:50,498 INFO L226 Difference]: Without dead ends: 3577 [2020-10-14 21:53:50,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:53:50,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2020-10-14 21:53:50,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 2933. [2020-10-14 21:53:50,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2933 states. [2020-10-14 21:53:50,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2933 states to 2933 states and 3757 transitions. [2020-10-14 21:53:50,594 INFO L78 Accepts]: Start accepts. Automaton has 2933 states and 3757 transitions. Word has length 336 [2020-10-14 21:53:50,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:53:50,595 INFO L479 AbstractCegarLoop]: Abstraction has 2933 states and 3757 transitions. [2020-10-14 21:53:50,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:53:50,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2933 states and 3757 transitions. [2020-10-14 21:53:50,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-10-14 21:53:50,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:53:50,602 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:53:50,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:53:50,603 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:53:50,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:53:50,603 INFO L82 PathProgramCache]: Analyzing trace with hash -2049477055, now seen corresponding path program 1 times [2020-10-14 21:53:50,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:53:50,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551281885] [2020-10-14 21:53:50,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:53:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:50,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:50,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:52,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:55,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:55,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-14 21:53:55,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:53:55,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 21:53:55,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:55,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:55,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:53:55,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:53:55,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 21:53:55,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:55,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:53:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:55,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:55,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:55,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:53:55,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:55,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:53:55,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:55,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:55,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:53:55,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:55,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:53:55,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:55,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:53:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:56,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:56,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:56,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 21:53:56,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:56,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-10-14 21:53:56,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:56,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:56,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:53:56,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:53:56,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 21:53:56,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 21:53:56,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 21:53:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:57,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:57,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:57,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 21:53:57,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:57,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 21:53:57,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:57,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:57,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:53:57,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-14 21:53:57,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:53:57,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:57,776 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 110 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:53:57,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551281885] [2020-10-14 21:53:57,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:53:57,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:53:57,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523726198] [2020-10-14 21:53:57,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:53:57,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:53:57,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:53:57,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:53:57,779 INFO L87 Difference]: Start difference. First operand 2933 states and 3757 transitions. Second operand 8 states. [2020-10-14 21:54:07,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:54:07,947 INFO L93 Difference]: Finished difference Result 6251 states and 7976 transitions. [2020-10-14 21:54:07,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 21:54:07,948 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 347 [2020-10-14 21:54:07,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:54:07,968 INFO L225 Difference]: With dead ends: 6251 [2020-10-14 21:54:07,968 INFO L226 Difference]: Without dead ends: 3324 [2020-10-14 21:54:07,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:54:07,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3324 states. [2020-10-14 21:54:08,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3324 to 3270. [2020-10-14 21:54:08,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3270 states. [2020-10-14 21:54:08,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3270 states to 3270 states and 4116 transitions. [2020-10-14 21:54:08,127 INFO L78 Accepts]: Start accepts. Automaton has 3270 states and 4116 transitions. Word has length 347 [2020-10-14 21:54:08,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:54:08,128 INFO L479 AbstractCegarLoop]: Abstraction has 3270 states and 4116 transitions. [2020-10-14 21:54:08,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:54:08,128 INFO L276 IsEmpty]: Start isEmpty. Operand 3270 states and 4116 transitions. [2020-10-14 21:54:08,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2020-10-14 21:54:08,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:54:08,137 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:54:08,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:54:08,138 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:54:08,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:54:08,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1649902934, now seen corresponding path program 1 times [2020-10-14 21:54:08,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:54:08,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440651500] [2020-10-14 21:54:08,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:54:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:08,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:08,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:10,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:10,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 433 [2020-10-14 21:54:10,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:54:10,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2205 [2020-10-14 21:54:10,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:10,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:10,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:10,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 21:54:10,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 21:54:10,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:10,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:54:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:10,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:10,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:10,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:54:10,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:10,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:54:10,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:10,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:10,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:54:10,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:10,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:54:10,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:10,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:54:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:10,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:11,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:11,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:54:11,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:11,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-14 21:54:11,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:11,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:11,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:54:11,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:11,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 21:54:11,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:11,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:54:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:11,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:11,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:11,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 21:54:11,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:11,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-14 21:54:11,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:11,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:11,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:11,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:54:11,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 21:54:11,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:11,931 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:54:11,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440651500] [2020-10-14 21:54:11,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:54:11,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:54:11,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147821124] [2020-10-14 21:54:11,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:54:11,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:54:11,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:54:11,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:54:11,937 INFO L87 Difference]: Start difference. First operand 3270 states and 4116 transitions. Second operand 7 states. [2020-10-14 21:54:21,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:54:21,419 INFO L93 Difference]: Finished difference Result 6946 states and 8817 transitions. [2020-10-14 21:54:21,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:54:21,421 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 421 [2020-10-14 21:54:21,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:54:21,441 INFO L225 Difference]: With dead ends: 6946 [2020-10-14 21:54:21,441 INFO L226 Difference]: Without dead ends: 3989 [2020-10-14 21:54:21,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:54:21,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3989 states. [2020-10-14 21:54:21,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3989 to 3909. [2020-10-14 21:54:21,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3909 states. [2020-10-14 21:54:21,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3909 states to 3909 states and 4554 transitions. [2020-10-14 21:54:21,584 INFO L78 Accepts]: Start accepts. Automaton has 3909 states and 4554 transitions. Word has length 421 [2020-10-14 21:54:21,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:54:21,585 INFO L479 AbstractCegarLoop]: Abstraction has 3909 states and 4554 transitions. [2020-10-14 21:54:21,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:54:21,585 INFO L276 IsEmpty]: Start isEmpty. Operand 3909 states and 4554 transitions. [2020-10-14 21:54:21,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-10-14 21:54:21,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:54:21,596 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:54:21,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:54:21,597 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:54:21,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:54:21,597 INFO L82 PathProgramCache]: Analyzing trace with hash 39773877, now seen corresponding path program 1 times [2020-10-14 21:54:21,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:54:21,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994572636] [2020-10-14 21:54:21,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:54:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:21,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:22,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:22,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:23,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:25,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:25,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 443 [2020-10-14 21:54:25,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:54:25,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3630 [2020-10-14 21:54:25,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:25,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:25,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 21:54:25,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:54:25,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 437 [2020-10-14 21:54:25,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:25,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:54:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:25,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:25,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:25,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:54:25,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:25,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 21:54:25,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:25,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:25,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:54:25,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:25,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:54:25,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:25,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:54:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:25,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:25,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:25,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:25,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:54:25,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:54:25,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-14 21:54:25,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:25,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:25,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:54:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:54:25,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:54:25,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 21:54:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:25,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:26,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:26,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:26,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:54:26,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:54:26,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 705 [2020-10-14 21:54:26,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:26,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:26,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:54:26,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:26,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 21:54:26,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:26,841 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 102 proven. 11 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-14 21:54:26,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994572636] [2020-10-14 21:54:26,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:54:26,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:54:26,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633343482] [2020-10-14 21:54:26,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:54:26,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:54:26,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:54:26,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:54:26,844 INFO L87 Difference]: Start difference. First operand 3909 states and 4554 transitions. Second operand 7 states. [2020-10-14 21:54:42,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:54:42,183 INFO L93 Difference]: Finished difference Result 10637 states and 12890 transitions. [2020-10-14 21:54:42,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:54:42,185 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 431 [2020-10-14 21:54:42,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:54:42,217 INFO L225 Difference]: With dead ends: 10637 [2020-10-14 21:54:42,217 INFO L226 Difference]: Without dead ends: 7041 [2020-10-14 21:54:42,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-14 21:54:42,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7041 states. [2020-10-14 21:54:42,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7041 to 5140. [2020-10-14 21:54:42,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5140 states. [2020-10-14 21:54:42,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5140 states to 5140 states and 5965 transitions. [2020-10-14 21:54:42,412 INFO L78 Accepts]: Start accepts. Automaton has 5140 states and 5965 transitions. Word has length 431 [2020-10-14 21:54:42,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:54:42,413 INFO L479 AbstractCegarLoop]: Abstraction has 5140 states and 5965 transitions. [2020-10-14 21:54:42,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:54:42,414 INFO L276 IsEmpty]: Start isEmpty. Operand 5140 states and 5965 transitions. [2020-10-14 21:54:42,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2020-10-14 21:54:42,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:54:42,423 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 21:54:42,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:54:42,423 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:54:42,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:54:42,424 INFO L82 PathProgramCache]: Analyzing trace with hash 374893509, now seen corresponding path program 1 times [2020-10-14 21:54:42,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:54:42,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041389175] [2020-10-14 21:54:42,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:54:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:42,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:42,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:42,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:45,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:46,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:47,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:47,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 553 [2020-10-14 21:54:47,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:54:47,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 21:54:47,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:47,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:47,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:54:47,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 21:54:47,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-14 21:54:47,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:47,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:54:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:47,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:47,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:47,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:54:47,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:47,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:54:47,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:47,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:47,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:54:47,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:47,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:54:47,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:47,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:54:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:47,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:47,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:47,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:54:47,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:47,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 21:54:47,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:47,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:47,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:54:47,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:47,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:54:47,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:47,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 21:54:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:47,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:48,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:48,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:48,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 21:54:48,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:54:48,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 461 [2020-10-14 21:54:48,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:48,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:48,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:48,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:54:48,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 21:54:48,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:48,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-14 21:54:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:48,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:48,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:48,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:54:48,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:48,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 21:54:48,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:48,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:48,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:48,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:54:48,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:54:48,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:48,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-14 21:54:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:48,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:48,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:48,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:54:48,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:48,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 21:54:48,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:48,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:48,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:54:48,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 21:54:48,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:54:48,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:54:49,255 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 397 proven. 176 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-14 21:54:49,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041389175] [2020-10-14 21:54:49,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:54:49,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:54:49,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420829596] [2020-10-14 21:54:49,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:54:49,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:54:49,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:54:49,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:54:49,258 INFO L87 Difference]: Start difference. First operand 5140 states and 5965 transitions. Second operand 7 states. [2020-10-14 21:55:03,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:55:03,632 INFO L93 Difference]: Finished difference Result 12538 states and 14861 transitions. [2020-10-14 21:55:03,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:55:03,634 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 537 [2020-10-14 21:55:03,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:55:03,664 INFO L225 Difference]: With dead ends: 12538 [2020-10-14 21:55:03,664 INFO L226 Difference]: Without dead ends: 7056 [2020-10-14 21:55:03,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:55:03,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7056 states. [2020-10-14 21:55:03,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7056 to 6408. [2020-10-14 21:55:03,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6408 states. [2020-10-14 21:55:03,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6408 states to 6408 states and 7165 transitions. [2020-10-14 21:55:03,850 INFO L78 Accepts]: Start accepts. Automaton has 6408 states and 7165 transitions. Word has length 537 [2020-10-14 21:55:03,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:55:03,850 INFO L479 AbstractCegarLoop]: Abstraction has 6408 states and 7165 transitions. [2020-10-14 21:55:03,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:55:03,851 INFO L276 IsEmpty]: Start isEmpty. Operand 6408 states and 7165 transitions. [2020-10-14 21:55:03,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2020-10-14 21:55:03,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:03,865 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:55:03,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:55:03,866 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:03,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:03,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1852085124, now seen corresponding path program 1 times [2020-10-14 21:55:03,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:03,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719224215] [2020-10-14 21:55:03,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:04,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:04,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:05,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:06,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:09,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:09,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-14 21:55:09,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:55:09,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 21:55:09,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:09,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:09,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:09,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 21:55:09,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:55:09,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:09,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:55:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:09,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:09,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:09,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:55:09,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:09,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:55:09,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:09,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:09,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:09,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:09,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:09,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:09,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:55:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:09,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:09,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:09,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:55:09,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:09,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-14 21:55:09,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:09,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:09,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:55:09,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:09,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 21:55:09,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:09,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:55:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:09,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:09,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:09,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:55:09,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:09,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 21:55:09,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:09,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:09,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:09,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:55:09,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 21:55:09,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:55:09,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 21:55:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:09,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:09,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:09,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:55:09,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:09,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 21:55:09,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:09,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:09,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:09,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 21:55:09,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:09,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:10,161 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 277 proven. 99 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-14 21:55:10,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719224215] [2020-10-14 21:55:10,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:55:10,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:55:10,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427438937] [2020-10-14 21:55:10,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:55:10,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:55:10,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:55:10,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:55:10,164 INFO L87 Difference]: Start difference. First operand 6408 states and 7165 transitions. Second operand 7 states. [2020-10-14 21:55:18,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:55:18,959 INFO L93 Difference]: Finished difference Result 13844 states and 15471 transitions. [2020-10-14 21:55:18,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:55:18,961 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 547 [2020-10-14 21:55:18,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:55:18,989 INFO L225 Difference]: With dead ends: 13844 [2020-10-14 21:55:18,989 INFO L226 Difference]: Without dead ends: 7749 [2020-10-14 21:55:19,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:55:19,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7749 states. [2020-10-14 21:55:19,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7749 to 7684. [2020-10-14 21:55:19,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7684 states. [2020-10-14 21:55:19,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7684 states to 7684 states and 8497 transitions. [2020-10-14 21:55:19,182 INFO L78 Accepts]: Start accepts. Automaton has 7684 states and 8497 transitions. Word has length 547 [2020-10-14 21:55:19,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:55:19,183 INFO L479 AbstractCegarLoop]: Abstraction has 7684 states and 8497 transitions. [2020-10-14 21:55:19,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:55:19,183 INFO L276 IsEmpty]: Start isEmpty. Operand 7684 states and 8497 transitions. [2020-10-14 21:55:19,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2020-10-14 21:55:19,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:19,197 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:55:19,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:55:19,198 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:19,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:19,199 INFO L82 PathProgramCache]: Analyzing trace with hash 2066771004, now seen corresponding path program 1 times [2020-10-14 21:55:19,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:19,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429065276] [2020-10-14 21:55:19,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:19,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:20,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:20,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:22,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:22,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 573 [2020-10-14 21:55:22,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:55:22,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2781 [2020-10-14 21:55:22,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:22,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:22,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:22,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 21:55:22,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 21:55:22,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:22,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:55:22,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:22,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:22,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:22,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:55:22,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:22,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:55:22,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:22,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:22,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:22,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:55:22,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:55:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:22,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:22,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:22,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:55:22,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:22,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 21:55:22,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:22,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:22,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:22,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:22,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:22,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:22,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:55:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:22,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:22,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:22,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:55:22,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:22,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 21:55:22,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:22,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:55:22,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:22,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:55:22,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:22,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:55:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:22,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:22,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:22,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:55:22,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:22,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 21:55:22,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:22,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:22,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:22,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:55:22,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 21:55:22,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:22,968 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 21:55:22,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429065276] [2020-10-14 21:55:22,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:55:22,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:55:22,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113411735] [2020-10-14 21:55:22,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:55:22,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:55:22,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:55:22,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:55:22,972 INFO L87 Difference]: Start difference. First operand 7684 states and 8497 transitions. Second operand 7 states. [2020-10-14 21:55:34,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:55:34,469 INFO L93 Difference]: Finished difference Result 17029 states and 19278 transitions. [2020-10-14 21:55:34,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:55:34,471 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 559 [2020-10-14 21:55:34,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:55:34,497 INFO L225 Difference]: With dead ends: 17029 [2020-10-14 21:55:34,498 INFO L226 Difference]: Without dead ends: 9658 [2020-10-14 21:55:34,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:55:34,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9658 states. [2020-10-14 21:55:34,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9658 to 9591. [2020-10-14 21:55:34,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9591 states. [2020-10-14 21:55:34,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9591 states to 9591 states and 10593 transitions. [2020-10-14 21:55:34,692 INFO L78 Accepts]: Start accepts. Automaton has 9591 states and 10593 transitions. Word has length 559 [2020-10-14 21:55:34,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:55:34,693 INFO L479 AbstractCegarLoop]: Abstraction has 9591 states and 10593 transitions. [2020-10-14 21:55:34,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:55:34,694 INFO L276 IsEmpty]: Start isEmpty. Operand 9591 states and 10593 transitions. [2020-10-14 21:55:34,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2020-10-14 21:55:34,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:34,705 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:55:34,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:55:34,706 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:34,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:34,707 INFO L82 PathProgramCache]: Analyzing trace with hash 49797873, now seen corresponding path program 1 times [2020-10-14 21:55:34,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:34,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696913128] [2020-10-14 21:55:34,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:35,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:35,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:35,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:37,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:37,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:37,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 601 [2020-10-14 21:55:37,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:55:37,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2971 [2020-10-14 21:55:37,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:37,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:37,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:55:37,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 21:55:37,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-14 21:55:37,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:38,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:55:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:38,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:38,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:38,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:55:38,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:38,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:55:38,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:38,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:38,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:38,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:38,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:38,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:38,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:55:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:38,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:38,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:38,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:55:38,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:38,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 21:55:38,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:38,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:38,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:38,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:38,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:38,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:38,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:55:38,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:38,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:38,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:38,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:55:38,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:38,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 21:55:38,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:38,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:38,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:55:38,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:38,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:55:38,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:38,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:55:38,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:38,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:38,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:38,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 21:55:38,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:38,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 21:55:38,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:38,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:38,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:38,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:55:38,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 21:55:38,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:38,722 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 343 proven. 56 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-14 21:55:38,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696913128] [2020-10-14 21:55:38,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:55:38,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:55:38,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052332680] [2020-10-14 21:55:38,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:55:38,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:55:38,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:55:38,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:55:38,725 INFO L87 Difference]: Start difference. First operand 9591 states and 10593 transitions. Second operand 6 states. [2020-10-14 21:55:46,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:55:46,040 INFO L93 Difference]: Finished difference Result 21837 states and 24581 transitions. [2020-10-14 21:55:46,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:55:46,042 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 587 [2020-10-14 21:55:46,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:55:46,093 INFO L225 Difference]: With dead ends: 21837 [2020-10-14 21:55:46,094 INFO L226 Difference]: Without dead ends: 12559 [2020-10-14 21:55:46,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:55:46,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12559 states. [2020-10-14 21:55:46,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12559 to 12191. [2020-10-14 21:55:46,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12191 states. [2020-10-14 21:55:46,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12191 states to 12191 states and 13632 transitions. [2020-10-14 21:55:46,357 INFO L78 Accepts]: Start accepts. Automaton has 12191 states and 13632 transitions. Word has length 587 [2020-10-14 21:55:46,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:55:46,358 INFO L479 AbstractCegarLoop]: Abstraction has 12191 states and 13632 transitions. [2020-10-14 21:55:46,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:55:46,358 INFO L276 IsEmpty]: Start isEmpty. Operand 12191 states and 13632 transitions. [2020-10-14 21:55:46,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2020-10-14 21:55:46,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:46,384 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:55:46,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 21:55:46,384 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:46,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:46,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1631360149, now seen corresponding path program 1 times [2020-10-14 21:55:46,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:46,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108768778] [2020-10-14 21:55:46,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:46,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:46,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:47,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:48,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:48,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:49,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:51,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:51,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 703 [2020-10-14 21:55:51,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 21:55:51,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-14 21:55:51,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:51,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:51,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:51,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 538 [2020-10-14 21:55:51,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 21:55:51,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:51,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:55:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:51,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:51,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:51,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:55:51,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:51,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:55:51,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:51,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:51,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:51,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:51,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:51,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:51,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:55:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:51,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:51,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:51,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:55:51,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:51,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 21:55:51,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:51,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:51,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:51,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:51,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:51,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:51,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:55:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:51,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:51,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:51,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:55:51,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:51,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 21:55:51,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:51,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:51,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:51,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:51,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:51,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:51,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:55:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:52,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:52,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:52,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:52,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 21:55:52,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:55:52,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-14 21:55:52,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:52,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:52,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:55:52,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:52,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 21:55:52,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:52,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-14 21:55:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:52,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:52,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:52,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:55:52,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:52,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 21:55:52,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:52,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:52,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:52,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:55:52,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 21:55:52,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:52,572 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 521 proven. 2 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-10-14 21:55:52,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108768778] [2020-10-14 21:55:52,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:55:52,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:55:52,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943618444] [2020-10-14 21:55:52,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:55:52,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:55:52,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:55:52,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:55:52,574 INFO L87 Difference]: Start difference. First operand 12191 states and 13632 transitions. Second operand 7 states. [2020-10-14 21:55:59,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:55:59,746 INFO L93 Difference]: Finished difference Result 26843 states and 29898 transitions. [2020-10-14 21:55:59,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 21:55:59,748 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 687 [2020-10-14 21:55:59,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:55:59,790 INFO L225 Difference]: With dead ends: 26843 [2020-10-14 21:55:59,791 INFO L226 Difference]: Without dead ends: 14965 [2020-10-14 21:55:59,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 21:55:59,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14965 states. [2020-10-14 21:56:00,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14965 to 12187. [2020-10-14 21:56:00,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12187 states. [2020-10-14 21:56:00,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12187 states to 12187 states and 13614 transitions. [2020-10-14 21:56:00,051 INFO L78 Accepts]: Start accepts. Automaton has 12187 states and 13614 transitions. Word has length 687 [2020-10-14 21:56:00,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:56:00,052 INFO L479 AbstractCegarLoop]: Abstraction has 12187 states and 13614 transitions. [2020-10-14 21:56:00,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:56:00,052 INFO L276 IsEmpty]: Start isEmpty. Operand 12187 states and 13614 transitions. [2020-10-14 21:56:00,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2020-10-14 21:56:00,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:56:00,071 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:56:00,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 21:56:00,071 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:56:00,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:56:00,072 INFO L82 PathProgramCache]: Analyzing trace with hash 2075331084, now seen corresponding path program 1 times [2020-10-14 21:56:00,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:56:00,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119906017] [2020-10-14 21:56:00,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:56:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:00,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:00,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:01,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:02,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:05,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:05,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 738 [2020-10-14 21:56:05,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:56:05,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 21:56:05,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:05,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:05,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:05,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 501 [2020-10-14 21:56:05,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-14 21:56:05,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:05,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:56:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:05,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:05,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:05,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:56:05,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:05,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:56:05,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:05,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:05,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:05,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:05,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:05,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:05,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:56:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:05,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:05,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:05,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:56:05,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:05,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 21:56:05,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:05,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:05,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:05,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:05,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:05,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:05,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:56:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:05,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:05,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:05,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:56:05,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:05,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 21:56:05,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:05,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:05,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:05,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:05,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:05,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:05,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:56:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:05,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:05,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:05,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 21:56:05,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:05,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 21:56:05,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:05,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:05,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:05,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:05,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 21:56:05,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:05,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2020-10-14 21:56:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:05,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:05,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:05,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-14 21:56:05,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:05,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 21:56:05,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:05,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:05,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:05,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:56:05,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-14 21:56:05,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:06,291 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 593 proven. 2 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2020-10-14 21:56:06,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119906017] [2020-10-14 21:56:06,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:56:06,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:56:06,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491045191] [2020-10-14 21:56:06,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:56:06,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:56:06,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:56:06,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:56:06,293 INFO L87 Difference]: Start difference. First operand 12187 states and 13614 transitions. Second operand 7 states. [2020-10-14 21:56:16,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:56:16,035 INFO L93 Difference]: Finished difference Result 27871 states and 31745 transitions. [2020-10-14 21:56:16,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:56:16,042 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 722 [2020-10-14 21:56:16,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:56:16,091 INFO L225 Difference]: With dead ends: 27871 [2020-10-14 21:56:16,091 INFO L226 Difference]: Without dead ends: 15997 [2020-10-14 21:56:16,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:56:16,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15997 states. [2020-10-14 21:56:16,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15997 to 14717. [2020-10-14 21:56:16,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14717 states. [2020-10-14 21:56:16,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14717 states to 14717 states and 16776 transitions. [2020-10-14 21:56:16,360 INFO L78 Accepts]: Start accepts. Automaton has 14717 states and 16776 transitions. Word has length 722 [2020-10-14 21:56:16,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:56:16,361 INFO L479 AbstractCegarLoop]: Abstraction has 14717 states and 16776 transitions. [2020-10-14 21:56:16,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:56:16,361 INFO L276 IsEmpty]: Start isEmpty. Operand 14717 states and 16776 transitions. [2020-10-14 21:56:16,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2020-10-14 21:56:16,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:56:16,382 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:56:16,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 21:56:16,382 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:56:16,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:56:16,383 INFO L82 PathProgramCache]: Analyzing trace with hash 356583956, now seen corresponding path program 1 times [2020-10-14 21:56:16,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:56:16,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868896134] [2020-10-14 21:56:16,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:56:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:16,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:17,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:21,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:21,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 758 [2020-10-14 21:56:21,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:56:21,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4683 [2020-10-14 21:56:21,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:21,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:21,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 21:56:21,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 21:56:21,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 372 [2020-10-14 21:56:21,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:21,709 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-14 21:56:21,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:56:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:21,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:21,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:21,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:56:21,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:21,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:56:21,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:21,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:21,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:21,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:21,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:21,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:21,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:56:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:21,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:22,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:22,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:56:22,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:22,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-14 21:56:22,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:22,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 21:56:22,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:22,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:56:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:22,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:22,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:22,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:56:22,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:22,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 21:56:22,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:22,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:22,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:56:22,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:56:22,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 21:56:22,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:22,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:56:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:22,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:22,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:23,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:23,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-14 21:56:23,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:56:23,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 893 [2020-10-14 21:56:23,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:23,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:23,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:23,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:56:23,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 286 [2020-10-14 21:56:23,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:23,813 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 557 proven. 110 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:56:23,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868896134] [2020-10-14 21:56:23,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:56:23,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 21:56:23,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419058701] [2020-10-14 21:56:23,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 21:56:23,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:56:23,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 21:56:23,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:56:23,816 INFO L87 Difference]: Start difference. First operand 14717 states and 16776 transitions. Second operand 11 states.