/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/locks/test_locks_15-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:44:00,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:44:00,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:44:00,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:44:00,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:44:00,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:44:00,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:44:00,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:44:00,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:44:00,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:44:00,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:44:00,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:44:00,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:44:00,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:44:00,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:44:00,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:44:00,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:44:00,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:44:00,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:44:00,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:44:00,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:44:00,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:44:00,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:44:00,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:44:00,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:44:00,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:44:00,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:44:00,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:44:00,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:44:00,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:44:00,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:44:00,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:44:00,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:44:00,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:44:00,235 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:44:00,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:44:00,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:44:00,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:44:00,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:44:00,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:44:00,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:44:00,239 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 23:44:00,283 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:44:00,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:44:00,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:44:00,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:44:00,286 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:44:00,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:44:00,287 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:44:00,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:44:00,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:44:00,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:44:00,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:44:00,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:44:00,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:44:00,288 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:44:00,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:44:00,289 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:44:00,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:44:00,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:44:00,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:44:00,292 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:44:00,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:44:00,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:44:00,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:44:00,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:44:00,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:44:00,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:44:00,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:44:00,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:44:00,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:44:00,294 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 23:44:00,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:44:00,667 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:44:00,672 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:44:00,673 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:44:00,674 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:44:00,675 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_15-2.c [2020-10-14 23:44:00,748 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65840327c/9e35f672c67f41a1848fbfa82d97bff3/FLAG3cd841cc5 [2020-10-14 23:44:01,222 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:44:01,223 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_15-2.c [2020-10-14 23:44:01,233 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65840327c/9e35f672c67f41a1848fbfa82d97bff3/FLAG3cd841cc5 [2020-10-14 23:44:01,558 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65840327c/9e35f672c67f41a1848fbfa82d97bff3 [2020-10-14 23:44:01,568 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:44:01,570 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:44:01,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:44:01,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:44:01,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:44:01,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:01" (1/1) ... [2020-10-14 23:44:01,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6251f5ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:01, skipping insertion in model container [2020-10-14 23:44:01,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:01" (1/1) ... [2020-10-14 23:44:01,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:44:01,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:44:01,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:44:01,834 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:44:01,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:44:01,881 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:44:01,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:01 WrapperNode [2020-10-14 23:44:01,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:44:01,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:44:01,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:44:01,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:44:01,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:01" (1/1) ... [2020-10-14 23:44:01,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:01" (1/1) ... [2020-10-14 23:44:01,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:01" (1/1) ... [2020-10-14 23:44:01,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:01" (1/1) ... [2020-10-14 23:44:02,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:01" (1/1) ... [2020-10-14 23:44:02,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:01" (1/1) ... [2020-10-14 23:44:02,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:01" (1/1) ... [2020-10-14 23:44:02,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:44:02,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:44:02,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:44:02,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:44:02,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:01" (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 23:44:02,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:44:02,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:44:02,083 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:44:02,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:44:02,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:44:02,083 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:44:02,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:44:02,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:44:02,471 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:44:02,471 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:44:02,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:02 BoogieIcfgContainer [2020-10-14 23:44:02,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:44:02,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:44:02,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:44:02,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:44:02,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:44:01" (1/3) ... [2020-10-14 23:44:02,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b57f01f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:02, skipping insertion in model container [2020-10-14 23:44:02,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:01" (2/3) ... [2020-10-14 23:44:02,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b57f01f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:02, skipping insertion in model container [2020-10-14 23:44:02,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:02" (3/3) ... [2020-10-14 23:44:02,485 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_15-2.c [2020-10-14 23:44:02,495 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:44:02,503 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:44:02,517 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:44:02,543 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:44:02,543 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:44:02,543 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:44:02,543 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:44:02,544 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:44:02,544 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:44:02,544 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:44:02,544 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:44:02,579 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-10-14 23:44:02,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 23:44:02,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:02,588 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] [2020-10-14 23:44:02,589 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:02,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:02,594 INFO L82 PathProgramCache]: Analyzing trace with hash -563360106, now seen corresponding path program 1 times [2020-10-14 23:44:02,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:02,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001139786] [2020-10-14 23:44:02,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:02,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:03,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:03,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:44:03,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:03,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-14 23:44:03,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:03,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:03,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:03,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:44:03,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:44:03,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:44:03,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:03,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:03,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:03,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:03,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:03,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:44:03,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:03,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:03,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:03,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:03,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:03,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:03,130 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 23:44:03,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001139786] [2020-10-14 23:44:03,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:03,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:03,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970137418] [2020-10-14 23:44:03,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:03,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:03,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:03,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:03,166 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 3 states. [2020-10-14 23:44:03,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:03,241 INFO L93 Difference]: Finished difference Result 117 states and 210 transitions. [2020-10-14 23:44:03,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:03,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-14 23:44:03,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:03,261 INFO L225 Difference]: With dead ends: 117 [2020-10-14 23:44:03,261 INFO L226 Difference]: Without dead ends: 102 [2020-10-14 23:44:03,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:03,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-14 23:44:03,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 70. [2020-10-14 23:44:03,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-14 23:44:03,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 129 transitions. [2020-10-14 23:44:03,316 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 129 transitions. Word has length 25 [2020-10-14 23:44:03,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:03,317 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 129 transitions. [2020-10-14 23:44:03,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:03,317 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 129 transitions. [2020-10-14 23:44:03,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 23:44:03,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:03,318 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] [2020-10-14 23:44:03,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:44:03,319 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:03,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:03,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1737462484, now seen corresponding path program 1 times [2020-10-14 23:44:03,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:03,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446788757] [2020-10-14 23:44:03,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:03,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:03,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:03,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:03,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:44:03,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:03,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 23:44:03,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:03,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:03,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:03,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:44:03,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:44:03,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:03,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:03,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:03,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:03,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:03,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:03,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:44:03,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:03,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:03,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:03,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:03,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:03,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:44:03,529 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 23:44:03,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446788757] [2020-10-14 23:44:03,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:03,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:03,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313322878] [2020-10-14 23:44:03,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:03,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:03,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:03,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:03,535 INFO L87 Difference]: Start difference. First operand 70 states and 129 transitions. Second operand 3 states. [2020-10-14 23:44:03,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:03,599 INFO L93 Difference]: Finished difference Result 167 states and 312 transitions. [2020-10-14 23:44:03,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:03,601 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-14 23:44:03,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:03,603 INFO L225 Difference]: With dead ends: 167 [2020-10-14 23:44:03,604 INFO L226 Difference]: Without dead ends: 102 [2020-10-14 23:44:03,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:03,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-14 23:44:03,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-10-14 23:44:03,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-14 23:44:03,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 185 transitions. [2020-10-14 23:44:03,622 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 185 transitions. Word has length 25 [2020-10-14 23:44:03,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:03,623 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 185 transitions. [2020-10-14 23:44:03,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:03,623 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 185 transitions. [2020-10-14 23:44:03,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 23:44:03,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:03,625 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] [2020-10-14 23:44:03,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:44:03,625 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:03,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:03,626 INFO L82 PathProgramCache]: Analyzing trace with hash -284082342, now seen corresponding path program 1 times [2020-10-14 23:44:03,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:03,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839830267] [2020-10-14 23:44:03,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:03,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:03,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:03,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:03,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:44:03,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:03,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 23:44:03,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:03,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:03,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:03,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:44:03,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:44:03,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:03,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:03,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:03,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:03,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:03,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:03,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:03,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:03,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:03,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:03,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:03,787 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 23:44:03,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839830267] [2020-10-14 23:44:03,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:03,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:03,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579344864] [2020-10-14 23:44:03,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:03,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:03,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:03,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:03,790 INFO L87 Difference]: Start difference. First operand 100 states and 185 transitions. Second operand 3 states. [2020-10-14 23:44:03,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:03,820 INFO L93 Difference]: Finished difference Result 193 states and 359 transitions. [2020-10-14 23:44:03,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:03,820 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-14 23:44:03,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:03,823 INFO L225 Difference]: With dead ends: 193 [2020-10-14 23:44:03,823 INFO L226 Difference]: Without dead ends: 191 [2020-10-14 23:44:03,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:03,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-14 23:44:03,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 133. [2020-10-14 23:44:03,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-14 23:44:03,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 247 transitions. [2020-10-14 23:44:03,839 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 247 transitions. Word has length 26 [2020-10-14 23:44:03,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:03,839 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 247 transitions. [2020-10-14 23:44:03,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:03,840 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 247 transitions. [2020-10-14 23:44:03,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 23:44:03,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:03,841 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] [2020-10-14 23:44:03,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:44:03,842 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:03,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:03,842 INFO L82 PathProgramCache]: Analyzing trace with hash 2016740248, now seen corresponding path program 1 times [2020-10-14 23:44:03,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:03,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930788335] [2020-10-14 23:44:03,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:03,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:03,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:03,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:03,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:44:03,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:03,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 23:44:03,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:03,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:03,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:03,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:44:03,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:44:03,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:03,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:03,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:03,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:03,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:03,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:03,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:03,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:03,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:03,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:03,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:03,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:03,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:03,960 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 23:44:03,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930788335] [2020-10-14 23:44:03,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:03,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:03,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289544138] [2020-10-14 23:44:03,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:03,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:03,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:03,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:03,963 INFO L87 Difference]: Start difference. First operand 133 states and 247 transitions. Second operand 3 states. [2020-10-14 23:44:03,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:03,987 INFO L93 Difference]: Finished difference Result 321 states and 601 transitions. [2020-10-14 23:44:03,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:03,988 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-14 23:44:03,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:03,990 INFO L225 Difference]: With dead ends: 321 [2020-10-14 23:44:03,990 INFO L226 Difference]: Without dead ends: 193 [2020-10-14 23:44:03,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:03,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-14 23:44:04,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 191. [2020-10-14 23:44:04,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-14 23:44:04,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 354 transitions. [2020-10-14 23:44:04,009 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 354 transitions. Word has length 26 [2020-10-14 23:44:04,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:04,009 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 354 transitions. [2020-10-14 23:44:04,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:04,010 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 354 transitions. [2020-10-14 23:44:04,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:44:04,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:04,013 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] [2020-10-14 23:44:04,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:44:04,014 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:04,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:04,014 INFO L82 PathProgramCache]: Analyzing trace with hash -216405909, now seen corresponding path program 1 times [2020-10-14 23:44:04,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:04,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847831291] [2020-10-14 23:44:04,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:04,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:04,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:44:04,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:44:04,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 23:44:04,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:04,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:04,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:04,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:44:04,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:44:04,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:04,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:04,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:04,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:04,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:04,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:04,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:04,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:04,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:04,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:04,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:04,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:04,211 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 23:44:04,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847831291] [2020-10-14 23:44:04,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:04,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:04,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241245072] [2020-10-14 23:44:04,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:04,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:04,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:04,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:04,214 INFO L87 Difference]: Start difference. First operand 191 states and 354 transitions. Second operand 3 states. [2020-10-14 23:44:04,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:04,237 INFO L93 Difference]: Finished difference Result 291 states and 535 transitions. [2020-10-14 23:44:04,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:04,238 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 23:44:04,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:04,240 INFO L225 Difference]: With dead ends: 291 [2020-10-14 23:44:04,240 INFO L226 Difference]: Without dead ends: 198 [2020-10-14 23:44:04,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:04,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-14 23:44:04,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 196. [2020-10-14 23:44:04,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-14 23:44:04,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 358 transitions. [2020-10-14 23:44:04,256 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 358 transitions. Word has length 27 [2020-10-14 23:44:04,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:04,257 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 358 transitions. [2020-10-14 23:44:04,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:04,257 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 358 transitions. [2020-10-14 23:44:04,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:44:04,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:04,259 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] [2020-10-14 23:44:04,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:44:04,260 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:04,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:04,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1905349651, now seen corresponding path program 1 times [2020-10-14 23:44:04,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:04,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515668529] [2020-10-14 23:44:04,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:04,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:04,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:04,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:44:04,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:04,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 23:44:04,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:04,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:04,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:04,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:44:04,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:44:04,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:04,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:04,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:04,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:04,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:04,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:04,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:04,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:04,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:04,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:04,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:04,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:04,402 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 23:44:04,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515668529] [2020-10-14 23:44:04,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:04,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:04,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408373645] [2020-10-14 23:44:04,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:04,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:04,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:04,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:04,405 INFO L87 Difference]: Start difference. First operand 196 states and 358 transitions. Second operand 3 states. [2020-10-14 23:44:04,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:04,424 INFO L93 Difference]: Finished difference Result 291 states and 529 transitions. [2020-10-14 23:44:04,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:04,424 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 23:44:04,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:04,426 INFO L225 Difference]: With dead ends: 291 [2020-10-14 23:44:04,426 INFO L226 Difference]: Without dead ends: 198 [2020-10-14 23:44:04,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:04,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-14 23:44:04,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 196. [2020-10-14 23:44:04,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-14 23:44:04,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 354 transitions. [2020-10-14 23:44:04,437 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 354 transitions. Word has length 27 [2020-10-14 23:44:04,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:04,438 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 354 transitions. [2020-10-14 23:44:04,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:04,438 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 354 transitions. [2020-10-14 23:44:04,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:44:04,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:04,440 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] [2020-10-14 23:44:04,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:44:04,440 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:04,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:04,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1571969195, now seen corresponding path program 1 times [2020-10-14 23:44:04,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:04,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258286517] [2020-10-14 23:44:04,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:04,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:04,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:44:04,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:04,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 23:44:04,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:04,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:04,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:04,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 23:44:04,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:44:04,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:04,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:04,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:04,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:04,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:04,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:04,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:04,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:04,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:04,517 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 23:44:04,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258286517] [2020-10-14 23:44:04,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:04,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:04,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033540517] [2020-10-14 23:44:04,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:04,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:04,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:04,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:04,519 INFO L87 Difference]: Start difference. First operand 196 states and 354 transitions. Second operand 3 states. [2020-10-14 23:44:04,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:04,538 INFO L93 Difference]: Finished difference Result 372 states and 680 transitions. [2020-10-14 23:44:04,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:04,539 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 23:44:04,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:04,541 INFO L225 Difference]: With dead ends: 372 [2020-10-14 23:44:04,542 INFO L226 Difference]: Without dead ends: 370 [2020-10-14 23:44:04,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:04,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-10-14 23:44:04,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 264. [2020-10-14 23:44:04,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-14 23:44:04,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 474 transitions. [2020-10-14 23:44:04,555 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 474 transitions. Word has length 27 [2020-10-14 23:44:04,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:04,555 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 474 transitions. [2020-10-14 23:44:04,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:04,555 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 474 transitions. [2020-10-14 23:44:04,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:44:04,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:04,557 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] [2020-10-14 23:44:04,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:44:04,558 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:04,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:04,558 INFO L82 PathProgramCache]: Analyzing trace with hash -422175511, now seen corresponding path program 1 times [2020-10-14 23:44:04,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:04,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015756064] [2020-10-14 23:44:04,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:04,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:04,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:44:04,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:04,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 23:44:04,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:04,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:04,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:04,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 23:44:04,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:44:04,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:04,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:04,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:04,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:04,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:04,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:04,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:04,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:04,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:04,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:04,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:04,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:04,631 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 23:44:04,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015756064] [2020-10-14 23:44:04,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:04,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:04,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290302637] [2020-10-14 23:44:04,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:04,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:04,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:04,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:04,634 INFO L87 Difference]: Start difference. First operand 264 states and 474 transitions. Second operand 3 states. [2020-10-14 23:44:04,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:04,656 INFO L93 Difference]: Finished difference Result 632 states and 1144 transitions. [2020-10-14 23:44:04,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:04,657 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-14 23:44:04,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:04,659 INFO L225 Difference]: With dead ends: 632 [2020-10-14 23:44:04,660 INFO L226 Difference]: Without dead ends: 378 [2020-10-14 23:44:04,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:04,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-10-14 23:44:04,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 376. [2020-10-14 23:44:04,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-10-14 23:44:04,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 674 transitions. [2020-10-14 23:44:04,675 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 674 transitions. Word has length 27 [2020-10-14 23:44:04,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:04,676 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 674 transitions. [2020-10-14 23:44:04,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:04,676 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 674 transitions. [2020-10-14 23:44:04,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 23:44:04,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:04,677 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] [2020-10-14 23:44:04,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:44:04,678 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:04,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:04,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1486617231, now seen corresponding path program 1 times [2020-10-14 23:44:04,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:04,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247960513] [2020-10-14 23:44:04,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:04,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:04,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:44:04,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:04,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 23:44:04,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:04,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:04,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:04,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:44:04,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:44:04,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:04,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:04,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:04,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:04,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:04,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:04,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:04,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:04,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:04,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:04,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:04,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:04,778 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 23:44:04,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247960513] [2020-10-14 23:44:04,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:04,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:04,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185765883] [2020-10-14 23:44:04,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:04,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:04,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:04,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:04,780 INFO L87 Difference]: Start difference. First operand 376 states and 674 transitions. Second operand 3 states. [2020-10-14 23:44:04,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:04,802 INFO L93 Difference]: Finished difference Result 712 states and 1292 transitions. [2020-10-14 23:44:04,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:04,803 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-14 23:44:04,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:04,807 INFO L225 Difference]: With dead ends: 712 [2020-10-14 23:44:04,808 INFO L226 Difference]: Without dead ends: 710 [2020-10-14 23:44:04,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:04,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2020-10-14 23:44:04,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 516. [2020-10-14 23:44:04,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2020-10-14 23:44:04,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 914 transitions. [2020-10-14 23:44:04,825 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 914 transitions. Word has length 28 [2020-10-14 23:44:04,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:04,826 INFO L479 AbstractCegarLoop]: Abstraction has 516 states and 914 transitions. [2020-10-14 23:44:04,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:04,826 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 914 transitions. [2020-10-14 23:44:04,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 23:44:04,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:04,828 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] [2020-10-14 23:44:04,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:44:04,828 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:04,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:04,828 INFO L82 PathProgramCache]: Analyzing trace with hash -507527475, now seen corresponding path program 1 times [2020-10-14 23:44:04,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:04,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146954576] [2020-10-14 23:44:04,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:04,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:04,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:44:04,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:04,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 23:44:04,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:04,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:04,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:04,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:44:04,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:44:04,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:04,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:04,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:04,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:04,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:04,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:44:04,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:04,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:04,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:04,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:04,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:04,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:04,949 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 23:44:04,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146954576] [2020-10-14 23:44:04,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:04,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:04,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106712888] [2020-10-14 23:44:04,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:04,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:04,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:04,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:04,955 INFO L87 Difference]: Start difference. First operand 516 states and 914 transitions. Second operand 3 states. [2020-10-14 23:44:04,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:04,999 INFO L93 Difference]: Finished difference Result 1240 states and 2212 transitions. [2020-10-14 23:44:05,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:05,000 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-14 23:44:05,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:05,007 INFO L225 Difference]: With dead ends: 1240 [2020-10-14 23:44:05,008 INFO L226 Difference]: Without dead ends: 734 [2020-10-14 23:44:05,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:05,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2020-10-14 23:44:05,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 732. [2020-10-14 23:44:05,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-10-14 23:44:05,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1294 transitions. [2020-10-14 23:44:05,048 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1294 transitions. Word has length 28 [2020-10-14 23:44:05,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:05,048 INFO L479 AbstractCegarLoop]: Abstraction has 732 states and 1294 transitions. [2020-10-14 23:44:05,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:05,049 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1294 transitions. [2020-10-14 23:44:05,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 23:44:05,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:05,050 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] [2020-10-14 23:44:05,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:44:05,051 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:05,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:05,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1159293312, now seen corresponding path program 1 times [2020-10-14 23:44:05,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:05,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595244583] [2020-10-14 23:44:05,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:05,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:05,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 23:44:05,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:44:05,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 23:44:05,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:05,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:05,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:05,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:44:05,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:44:05,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:05,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:05,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:05,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:05,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:05,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:44:05,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:05,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:05,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:05,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:05,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:05,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:05,277 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 23:44:05,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595244583] [2020-10-14 23:44:05,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:05,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:05,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424600505] [2020-10-14 23:44:05,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:05,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:05,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:05,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:05,280 INFO L87 Difference]: Start difference. First operand 732 states and 1294 transitions. Second operand 3 states. [2020-10-14 23:44:05,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:05,309 INFO L93 Difference]: Finished difference Result 1104 states and 1948 transitions. [2020-10-14 23:44:05,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:05,310 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-14 23:44:05,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:05,314 INFO L225 Difference]: With dead ends: 1104 [2020-10-14 23:44:05,314 INFO L226 Difference]: Without dead ends: 746 [2020-10-14 23:44:05,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:05,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2020-10-14 23:44:05,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 744. [2020-10-14 23:44:05,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2020-10-14 23:44:05,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1302 transitions. [2020-10-14 23:44:05,342 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1302 transitions. Word has length 29 [2020-10-14 23:44:05,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:05,343 INFO L479 AbstractCegarLoop]: Abstraction has 744 states and 1302 transitions. [2020-10-14 23:44:05,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:05,343 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1302 transitions. [2020-10-14 23:44:05,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 23:44:05,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:05,344 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] [2020-10-14 23:44:05,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:44:05,345 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:05,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:05,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1446730242, now seen corresponding path program 1 times [2020-10-14 23:44:05,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:05,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478534381] [2020-10-14 23:44:05,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:05,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:05,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 23:44:05,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:05,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 23:44:05,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:05,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:05,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:05,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 23:44:05,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:44:05,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:05,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:05,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:05,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:05,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:05,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:05,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:05,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:05,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:05,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:05,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:05,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:05,448 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 23:44:05,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478534381] [2020-10-14 23:44:05,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:05,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:05,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375683540] [2020-10-14 23:44:05,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:05,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:05,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:05,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:05,451 INFO L87 Difference]: Start difference. First operand 744 states and 1302 transitions. Second operand 3 states. [2020-10-14 23:44:05,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:05,479 INFO L93 Difference]: Finished difference Result 1388 states and 2464 transitions. [2020-10-14 23:44:05,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:05,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-14 23:44:05,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:05,487 INFO L225 Difference]: With dead ends: 1388 [2020-10-14 23:44:05,487 INFO L226 Difference]: Without dead ends: 1386 [2020-10-14 23:44:05,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:05,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2020-10-14 23:44:05,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1032. [2020-10-14 23:44:05,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-10-14 23:44:05,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1774 transitions. [2020-10-14 23:44:05,529 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1774 transitions. Word has length 29 [2020-10-14 23:44:05,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:05,529 INFO L479 AbstractCegarLoop]: Abstraction has 1032 states and 1774 transitions. [2020-10-14 23:44:05,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:05,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1774 transitions. [2020-10-14 23:44:05,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 23:44:05,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:05,531 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] [2020-10-14 23:44:05,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:44:05,532 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:05,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:05,532 INFO L82 PathProgramCache]: Analyzing trace with hash -547414464, now seen corresponding path program 1 times [2020-10-14 23:44:05,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:05,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534061307] [2020-10-14 23:44:05,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:05,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:05,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 23:44:05,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:05,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 23:44:05,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:05,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:05,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:05,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 23:44:05,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:44:05,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:05,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:05,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:05,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:05,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:05,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:05,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:05,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:05,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:05,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:05,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:05,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:05,619 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 23:44:05,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534061307] [2020-10-14 23:44:05,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:05,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:05,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918330470] [2020-10-14 23:44:05,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:05,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:05,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:05,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:05,621 INFO L87 Difference]: Start difference. First operand 1032 states and 1774 transitions. Second operand 3 states. [2020-10-14 23:44:05,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:05,656 INFO L93 Difference]: Finished difference Result 2460 states and 4256 transitions. [2020-10-14 23:44:05,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:05,656 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-14 23:44:05,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:05,664 INFO L225 Difference]: With dead ends: 2460 [2020-10-14 23:44:05,665 INFO L226 Difference]: Without dead ends: 1450 [2020-10-14 23:44:05,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:05,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2020-10-14 23:44:05,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1448. [2020-10-14 23:44:05,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1448 states. [2020-10-14 23:44:05,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 2486 transitions. [2020-10-14 23:44:05,707 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 2486 transitions. Word has length 29 [2020-10-14 23:44:05,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:05,707 INFO L479 AbstractCegarLoop]: Abstraction has 1448 states and 2486 transitions. [2020-10-14 23:44:05,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:05,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 2486 transitions. [2020-10-14 23:44:05,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:44:05,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:05,709 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] [2020-10-14 23:44:05,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:44:05,710 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:05,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:05,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1899177666, now seen corresponding path program 1 times [2020-10-14 23:44:05,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:05,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299381198] [2020-10-14 23:44:05,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:05,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:05,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:44:05,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:44:05,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 23:44:05,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:05,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:05,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:05,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 23:44:05,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:44:05,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:05,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:05,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:05,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:05,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:05,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:05,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:05,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:05,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:05,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:05,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:05,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:05,850 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 23:44:05,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299381198] [2020-10-14 23:44:05,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:05,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:05,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166092690] [2020-10-14 23:44:05,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:05,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:05,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:05,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:05,853 INFO L87 Difference]: Start difference. First operand 1448 states and 2486 transitions. Second operand 3 states. [2020-10-14 23:44:05,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:05,888 INFO L93 Difference]: Finished difference Result 2172 states and 3720 transitions. [2020-10-14 23:44:05,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:05,888 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-14 23:44:05,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:05,897 INFO L225 Difference]: With dead ends: 2172 [2020-10-14 23:44:05,898 INFO L226 Difference]: Without dead ends: 1466 [2020-10-14 23:44:05,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:05,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2020-10-14 23:44:05,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1464. [2020-10-14 23:44:05,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1464 states. [2020-10-14 23:44:05,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 2486 transitions. [2020-10-14 23:44:05,944 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 2486 transitions. Word has length 30 [2020-10-14 23:44:05,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:05,945 INFO L479 AbstractCegarLoop]: Abstraction has 1464 states and 2486 transitions. [2020-10-14 23:44:05,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:05,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 2486 transitions. [2020-10-14 23:44:05,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:44:05,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:05,947 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] [2020-10-14 23:44:05,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:44:05,947 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:05,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:05,948 INFO L82 PathProgramCache]: Analyzing trace with hash 210233924, now seen corresponding path program 1 times [2020-10-14 23:44:05,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:05,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371807552] [2020-10-14 23:44:05,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:05,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:05,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:06,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:06,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:44:06,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:06,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 23:44:06,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:06,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:06,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:06,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 23:44:06,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:44:06,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:06,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:06,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:06,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:06,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:06,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:06,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:06,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:06,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:06,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:06,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:06,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:06,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:06,039 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 23:44:06,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371807552] [2020-10-14 23:44:06,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:06,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:06,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329256122] [2020-10-14 23:44:06,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:06,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:06,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:06,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:06,041 INFO L87 Difference]: Start difference. First operand 1464 states and 2486 transitions. Second operand 3 states. [2020-10-14 23:44:06,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:06,078 INFO L93 Difference]: Finished difference Result 2172 states and 3672 transitions. [2020-10-14 23:44:06,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:06,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-14 23:44:06,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:06,089 INFO L225 Difference]: With dead ends: 2172 [2020-10-14 23:44:06,089 INFO L226 Difference]: Without dead ends: 1466 [2020-10-14 23:44:06,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:06,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2020-10-14 23:44:06,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1464. [2020-10-14 23:44:06,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1464 states. [2020-10-14 23:44:06,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 2454 transitions. [2020-10-14 23:44:06,159 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 2454 transitions. Word has length 30 [2020-10-14 23:44:06,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:06,160 INFO L479 AbstractCegarLoop]: Abstraction has 1464 states and 2454 transitions. [2020-10-14 23:44:06,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:06,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 2454 transitions. [2020-10-14 23:44:06,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:44:06,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:06,162 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] [2020-10-14 23:44:06,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 23:44:06,163 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:06,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:06,163 INFO L82 PathProgramCache]: Analyzing trace with hash 632935750, now seen corresponding path program 1 times [2020-10-14 23:44:06,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:06,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082109323] [2020-10-14 23:44:06,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:06,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:06,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:06,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:44:06,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:06,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 23:44:06,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:06,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:06,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:06,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 23:44:06,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:44:06,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:06,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:06,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:06,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:06,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:06,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:06,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:44:06,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:06,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:06,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:06,247 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 23:44:06,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082109323] [2020-10-14 23:44:06,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:06,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:06,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927940963] [2020-10-14 23:44:06,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:06,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:06,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:06,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:06,249 INFO L87 Difference]: Start difference. First operand 1464 states and 2454 transitions. Second operand 3 states. [2020-10-14 23:44:06,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:06,289 INFO L93 Difference]: Finished difference Result 2700 states and 4616 transitions. [2020-10-14 23:44:06,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:06,289 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-14 23:44:06,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:06,303 INFO L225 Difference]: With dead ends: 2700 [2020-10-14 23:44:06,303 INFO L226 Difference]: Without dead ends: 2698 [2020-10-14 23:44:06,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:06,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2020-10-14 23:44:06,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 2056. [2020-10-14 23:44:06,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2056 states. [2020-10-14 23:44:06,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 3366 transitions. [2020-10-14 23:44:06,372 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 3366 transitions. Word has length 30 [2020-10-14 23:44:06,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:06,372 INFO L479 AbstractCegarLoop]: Abstraction has 2056 states and 3366 transitions. [2020-10-14 23:44:06,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:06,373 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 3366 transitions. [2020-10-14 23:44:06,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:44:06,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:06,376 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] [2020-10-14 23:44:06,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 23:44:06,377 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:06,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:06,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1361208956, now seen corresponding path program 1 times [2020-10-14 23:44:06,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:06,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081099071] [2020-10-14 23:44:06,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:06,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:06,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:06,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:44:06,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:06,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 23:44:06,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:06,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:06,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:06,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 23:44:06,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:44:06,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:06,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:06,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:06,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:06,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:06,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:06,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:06,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:06,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:06,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:06,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:06,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:06,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:06,454 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 23:44:06,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081099071] [2020-10-14 23:44:06,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:06,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:06,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928584601] [2020-10-14 23:44:06,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:06,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:06,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:06,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:06,456 INFO L87 Difference]: Start difference. First operand 2056 states and 3366 transitions. Second operand 3 states. [2020-10-14 23:44:06,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:06,509 INFO L93 Difference]: Finished difference Result 4876 states and 8040 transitions. [2020-10-14 23:44:06,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:06,510 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-14 23:44:06,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:06,527 INFO L225 Difference]: With dead ends: 4876 [2020-10-14 23:44:06,527 INFO L226 Difference]: Without dead ends: 2858 [2020-10-14 23:44:06,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:06,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2858 states. [2020-10-14 23:44:06,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2858 to 2856. [2020-10-14 23:44:06,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2856 states. [2020-10-14 23:44:06,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 4678 transitions. [2020-10-14 23:44:06,610 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 4678 transitions. Word has length 30 [2020-10-14 23:44:06,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:06,610 INFO L479 AbstractCegarLoop]: Abstraction has 2856 states and 4678 transitions. [2020-10-14 23:44:06,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:06,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 4678 transitions. [2020-10-14 23:44:06,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 23:44:06,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:06,614 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] [2020-10-14 23:44:06,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 23:44:06,615 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:06,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:06,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1853614765, now seen corresponding path program 1 times [2020-10-14 23:44:06,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:06,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536558790] [2020-10-14 23:44:06,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:06,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:06,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:06,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:06,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 23:44:06,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:06,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 23:44:06,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:06,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:06,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:06,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 23:44:06,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:44:06,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:06,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:06,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:06,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:06,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:06,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:06,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:06,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:06,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:06,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:06,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:06,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:06,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:06,696 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 23:44:06,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536558790] [2020-10-14 23:44:06,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:06,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:06,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361888307] [2020-10-14 23:44:06,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:06,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:06,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:06,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:06,698 INFO L87 Difference]: Start difference. First operand 2856 states and 4678 transitions. Second operand 3 states. [2020-10-14 23:44:06,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:06,780 INFO L93 Difference]: Finished difference Result 5228 states and 8744 transitions. [2020-10-14 23:44:06,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:06,780 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-14 23:44:06,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:06,804 INFO L225 Difference]: With dead ends: 5228 [2020-10-14 23:44:06,805 INFO L226 Difference]: Without dead ends: 5226 [2020-10-14 23:44:06,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:06,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5226 states. [2020-10-14 23:44:06,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5226 to 4072. [2020-10-14 23:44:06,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4072 states. [2020-10-14 23:44:06,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4072 states to 4072 states and 6502 transitions. [2020-10-14 23:44:06,922 INFO L78 Accepts]: Start accepts. Automaton has 4072 states and 6502 transitions. Word has length 31 [2020-10-14 23:44:06,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:06,923 INFO L479 AbstractCegarLoop]: Abstraction has 4072 states and 6502 transitions. [2020-10-14 23:44:06,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:06,923 INFO L276 IsEmpty]: Start isEmpty. Operand 4072 states and 6502 transitions. [2020-10-14 23:44:06,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 23:44:06,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:06,929 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] [2020-10-14 23:44:06,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 23:44:06,930 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:06,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:06,930 INFO L82 PathProgramCache]: Analyzing trace with hash 447207825, now seen corresponding path program 1 times [2020-10-14 23:44:06,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:06,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170199661] [2020-10-14 23:44:06,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:06,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:06,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:06,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:06,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 23:44:06,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:06,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 23:44:06,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:06,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:06,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:06,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 23:44:06,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:44:06,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:07,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:07,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:07,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:07,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:07,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:07,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:07,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:07,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:07,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:07,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:07,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:07,019 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 23:44:07,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170199661] [2020-10-14 23:44:07,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:07,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:07,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984020912] [2020-10-14 23:44:07,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:07,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:07,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:07,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:07,022 INFO L87 Difference]: Start difference. First operand 4072 states and 6502 transitions. Second operand 3 states. [2020-10-14 23:44:07,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:07,120 INFO L93 Difference]: Finished difference Result 9644 states and 15528 transitions. [2020-10-14 23:44:07,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:07,120 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-14 23:44:07,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:07,156 INFO L225 Difference]: With dead ends: 9644 [2020-10-14 23:44:07,156 INFO L226 Difference]: Without dead ends: 5610 [2020-10-14 23:44:07,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:07,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5610 states. [2020-10-14 23:44:07,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5610 to 5608. [2020-10-14 23:44:07,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5608 states. [2020-10-14 23:44:07,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5608 states to 5608 states and 8966 transitions. [2020-10-14 23:44:07,327 INFO L78 Accepts]: Start accepts. Automaton has 5608 states and 8966 transitions. Word has length 31 [2020-10-14 23:44:07,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:07,327 INFO L479 AbstractCegarLoop]: Abstraction has 5608 states and 8966 transitions. [2020-10-14 23:44:07,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:07,328 INFO L276 IsEmpty]: Start isEmpty. Operand 5608 states and 8966 transitions. [2020-10-14 23:44:07,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:44:07,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:07,334 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] [2020-10-14 23:44:07,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 23:44:07,334 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:07,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:07,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1627269061, now seen corresponding path program 1 times [2020-10-14 23:44:07,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:07,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575088419] [2020-10-14 23:44:07,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:07,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:07,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:44:07,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:44:07,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-14 23:44:07,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:07,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:07,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:07,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 23:44:07,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:44:07,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:07,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:07,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:07,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:07,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:07,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:07,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:07,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:07,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:07,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:07,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:07,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:07,541 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 23:44:07,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575088419] [2020-10-14 23:44:07,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:07,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:07,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724634318] [2020-10-14 23:44:07,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:07,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:07,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:07,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:07,544 INFO L87 Difference]: Start difference. First operand 5608 states and 8966 transitions. Second operand 3 states. [2020-10-14 23:44:07,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:07,620 INFO L93 Difference]: Finished difference Result 8460 states and 13512 transitions. [2020-10-14 23:44:07,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:07,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-14 23:44:07,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:07,634 INFO L225 Difference]: With dead ends: 8460 [2020-10-14 23:44:07,635 INFO L226 Difference]: Without dead ends: 5706 [2020-10-14 23:44:07,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:07,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5706 states. [2020-10-14 23:44:07,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5706 to 5704. [2020-10-14 23:44:07,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5704 states. [2020-10-14 23:44:07,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 9030 transitions. [2020-10-14 23:44:07,775 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 9030 transitions. Word has length 32 [2020-10-14 23:44:07,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:07,775 INFO L479 AbstractCegarLoop]: Abstraction has 5704 states and 9030 transitions. [2020-10-14 23:44:07,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:07,775 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 9030 transitions. [2020-10-14 23:44:07,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:44:07,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:07,782 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] [2020-10-14 23:44:07,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 23:44:07,782 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:07,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:07,783 INFO L82 PathProgramCache]: Analyzing trace with hash 978754493, now seen corresponding path program 1 times [2020-10-14 23:44:07,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:07,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901981549] [2020-10-14 23:44:07,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:07,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:07,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:07,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:44:07,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:07,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 23:44:07,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:07,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:07,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:07,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 23:44:07,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:44:07,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:07,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:07,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:07,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:07,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:07,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:44:07,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:07,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:07,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:07,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:07,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:07,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:07,875 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 23:44:07,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901981549] [2020-10-14 23:44:07,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:07,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:07,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372915727] [2020-10-14 23:44:07,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:07,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:07,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:07,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:07,877 INFO L87 Difference]: Start difference. First operand 5704 states and 9030 transitions. Second operand 3 states. [2020-10-14 23:44:08,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:08,020 INFO L93 Difference]: Finished difference Result 16716 states and 26312 transitions. [2020-10-14 23:44:08,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:08,021 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-14 23:44:08,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:08,054 INFO L225 Difference]: With dead ends: 16716 [2020-10-14 23:44:08,054 INFO L226 Difference]: Without dead ends: 11146 [2020-10-14 23:44:08,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:08,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11146 states. [2020-10-14 23:44:08,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11146 to 11144. [2020-10-14 23:44:08,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11144 states. [2020-10-14 23:44:08,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11144 states to 11144 states and 17286 transitions. [2020-10-14 23:44:08,407 INFO L78 Accepts]: Start accepts. Automaton has 11144 states and 17286 transitions. Word has length 32 [2020-10-14 23:44:08,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:08,408 INFO L479 AbstractCegarLoop]: Abstraction has 11144 states and 17286 transitions. [2020-10-14 23:44:08,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:08,408 INFO L276 IsEmpty]: Start isEmpty. Operand 11144 states and 17286 transitions. [2020-10-14 23:44:08,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:44:08,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:08,419 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] [2020-10-14 23:44:08,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 23:44:08,420 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:08,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:08,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1322068097, now seen corresponding path program 1 times [2020-10-14 23:44:08,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:08,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608332413] [2020-10-14 23:44:08,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:08,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:08,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:44:08,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:08,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 23:44:08,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:08,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:08,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:08,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 23:44:08,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:44:08,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:08,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:08,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:08,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:08,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:08,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:44:08,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:08,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:08,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:08,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:08,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:08,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:08,513 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 23:44:08,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608332413] [2020-10-14 23:44:08,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:08,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:08,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711945520] [2020-10-14 23:44:08,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:08,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:08,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:08,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:08,515 INFO L87 Difference]: Start difference. First operand 11144 states and 17286 transitions. Second operand 3 states. [2020-10-14 23:44:08,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:08,672 INFO L93 Difference]: Finished difference Result 13196 states and 21128 transitions. [2020-10-14 23:44:08,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:08,672 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-14 23:44:08,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:08,701 INFO L225 Difference]: With dead ends: 13196 [2020-10-14 23:44:08,701 INFO L226 Difference]: Without dead ends: 13194 [2020-10-14 23:44:08,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:08,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13194 states. [2020-10-14 23:44:09,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13194 to 11144. [2020-10-14 23:44:09,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11144 states. [2020-10-14 23:44:09,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11144 states to 11144 states and 17158 transitions. [2020-10-14 23:44:09,083 INFO L78 Accepts]: Start accepts. Automaton has 11144 states and 17158 transitions. Word has length 32 [2020-10-14 23:44:09,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:09,083 INFO L479 AbstractCegarLoop]: Abstraction has 11144 states and 17158 transitions. [2020-10-14 23:44:09,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:09,083 INFO L276 IsEmpty]: Start isEmpty. Operand 11144 states and 17158 transitions. [2020-10-14 23:44:09,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:44:09,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:09,095 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] [2020-10-14 23:44:09,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 23:44:09,096 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:09,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:09,096 INFO L82 PathProgramCache]: Analyzing trace with hash 276832358, now seen corresponding path program 1 times [2020-10-14 23:44:09,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:09,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841766322] [2020-10-14 23:44:09,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:09,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:09,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:09,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:09,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:44:09,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:09,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 23:44:09,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:09,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:09,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:09,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 23:44:09,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:44:09,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:09,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:09,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:09,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:09,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:09,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:09,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:44:09,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:09,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:09,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:09,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:09,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:09,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:09,176 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 23:44:09,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841766322] [2020-10-14 23:44:09,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:09,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:09,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793690260] [2020-10-14 23:44:09,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:09,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:09,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:09,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:09,178 INFO L87 Difference]: Start difference. First operand 11144 states and 17158 transitions. Second operand 3 states. [2020-10-14 23:44:09,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:09,291 INFO L93 Difference]: Finished difference Result 16588 states and 25416 transitions. [2020-10-14 23:44:09,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:09,291 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-14 23:44:09,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:09,313 INFO L225 Difference]: With dead ends: 16588 [2020-10-14 23:44:09,313 INFO L226 Difference]: Without dead ends: 11146 [2020-10-14 23:44:09,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:09,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11146 states. [2020-10-14 23:44:10,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11146 to 11144. [2020-10-14 23:44:10,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11144 states. [2020-10-14 23:44:10,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11144 states to 11144 states and 16902 transitions. [2020-10-14 23:44:10,026 INFO L78 Accepts]: Start accepts. Automaton has 11144 states and 16902 transitions. Word has length 33 [2020-10-14 23:44:10,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:10,027 INFO L479 AbstractCegarLoop]: Abstraction has 11144 states and 16902 transitions. [2020-10-14 23:44:10,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:10,027 INFO L276 IsEmpty]: Start isEmpty. Operand 11144 states and 16902 transitions. [2020-10-14 23:44:10,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:44:10,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:10,040 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] [2020-10-14 23:44:10,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 23:44:10,040 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:10,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:10,040 INFO L82 PathProgramCache]: Analyzing trace with hash 699534184, now seen corresponding path program 1 times [2020-10-14 23:44:10,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:10,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469558311] [2020-10-14 23:44:10,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:10,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:10,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:10,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:44:10,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:10,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 23:44:10,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:10,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:10,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:10,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 23:44:10,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:44:10,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:10,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:10,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:10,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:10,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:10,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:10,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:10,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:44:10,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:10,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:10,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:10,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:10,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:10,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:10,094 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 23:44:10,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469558311] [2020-10-14 23:44:10,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:10,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:10,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223335727] [2020-10-14 23:44:10,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:10,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:10,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:10,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:10,096 INFO L87 Difference]: Start difference. First operand 11144 states and 16902 transitions. Second operand 3 states. [2020-10-14 23:44:10,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:10,247 INFO L93 Difference]: Finished difference Result 19852 states and 30856 transitions. [2020-10-14 23:44:10,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:10,247 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-14 23:44:10,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:10,287 INFO L225 Difference]: With dead ends: 19852 [2020-10-14 23:44:10,287 INFO L226 Difference]: Without dead ends: 19850 [2020-10-14 23:44:10,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:10,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19850 states. [2020-10-14 23:44:10,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19850 to 16264. [2020-10-14 23:44:10,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16264 states. [2020-10-14 23:44:10,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16264 states to 16264 states and 23942 transitions. [2020-10-14 23:44:10,594 INFO L78 Accepts]: Start accepts. Automaton has 16264 states and 23942 transitions. Word has length 33 [2020-10-14 23:44:10,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:10,594 INFO L479 AbstractCegarLoop]: Abstraction has 16264 states and 23942 transitions. [2020-10-14 23:44:10,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:10,595 INFO L276 IsEmpty]: Start isEmpty. Operand 16264 states and 23942 transitions. [2020-10-14 23:44:10,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:44:10,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:10,620 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] [2020-10-14 23:44:10,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 23:44:10,621 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:10,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:10,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1294610522, now seen corresponding path program 1 times [2020-10-14 23:44:10,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:10,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377459182] [2020-10-14 23:44:10,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:10,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:10,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:10,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:44:10,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:10,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 23:44:10,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:10,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:10,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:10,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 23:44:10,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:44:10,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:10,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:10,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:10,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:10,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:10,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:10,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:10,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:10,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:10,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:10,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:10,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:10,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 66 [2020-10-14 23:44:10,754 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 23:44:10,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377459182] [2020-10-14 23:44:10,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:10,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:10,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841806731] [2020-10-14 23:44:10,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:10,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:10,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:10,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:10,756 INFO L87 Difference]: Start difference. First operand 16264 states and 23942 transitions. Second operand 3 states. [2020-10-14 23:44:11,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:11,024 INFO L93 Difference]: Finished difference Result 38028 states and 56456 transitions. [2020-10-14 23:44:11,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:11,025 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-14 23:44:11,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:11,073 INFO L225 Difference]: With dead ends: 38028 [2020-10-14 23:44:11,073 INFO L226 Difference]: Without dead ends: 21898 [2020-10-14 23:44:11,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:11,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21898 states. [2020-10-14 23:44:11,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21898 to 21896. [2020-10-14 23:44:11,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21896 states. [2020-10-14 23:44:11,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21896 states to 21896 states and 32262 transitions. [2020-10-14 23:44:11,630 INFO L78 Accepts]: Start accepts. Automaton has 21896 states and 32262 transitions. Word has length 33 [2020-10-14 23:44:11,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:11,630 INFO L479 AbstractCegarLoop]: Abstraction has 21896 states and 32262 transitions. [2020-10-14 23:44:11,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:11,630 INFO L276 IsEmpty]: Start isEmpty. Operand 21896 states and 32262 transitions. [2020-10-14 23:44:11,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:44:11,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:11,653 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] [2020-10-14 23:44:11,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 23:44:11,654 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:11,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:11,654 INFO L82 PathProgramCache]: Analyzing trace with hash 210937712, now seen corresponding path program 1 times [2020-10-14 23:44:11,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:11,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85529470] [2020-10-14 23:44:11,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:11,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:11,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:11,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:11,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:44:11,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:11,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 23:44:11,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:11,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:11,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:11,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 23:44:11,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:44:11,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:11,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:11,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:11,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:11,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:11,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:11,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:44:11,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:11,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:11,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:11,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:11,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:11,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:11,734 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 23:44:11,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85529470] [2020-10-14 23:44:11,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:11,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:11,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092875298] [2020-10-14 23:44:11,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:11,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:11,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:11,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:11,736 INFO L87 Difference]: Start difference. First operand 21896 states and 32262 transitions. Second operand 3 states. [2020-10-14 23:44:12,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:12,028 INFO L93 Difference]: Finished difference Result 38540 states and 58120 transitions. [2020-10-14 23:44:12,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:12,029 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-14 23:44:12,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:12,111 INFO L225 Difference]: With dead ends: 38540 [2020-10-14 23:44:12,111 INFO L226 Difference]: Without dead ends: 38538 [2020-10-14 23:44:12,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:12,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38538 states. [2020-10-14 23:44:12,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38538 to 32392. [2020-10-14 23:44:12,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32392 states. [2020-10-14 23:44:12,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32392 states to 32392 states and 46342 transitions. [2020-10-14 23:44:12,921 INFO L78 Accepts]: Start accepts. Automaton has 32392 states and 46342 transitions. Word has length 34 [2020-10-14 23:44:12,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:12,921 INFO L479 AbstractCegarLoop]: Abstraction has 32392 states and 46342 transitions. [2020-10-14 23:44:12,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:12,921 INFO L276 IsEmpty]: Start isEmpty. Operand 32392 states and 46342 transitions. [2020-10-14 23:44:12,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:44:12,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:12,960 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] [2020-10-14 23:44:12,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 23:44:12,961 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:12,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:12,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1783206994, now seen corresponding path program 1 times [2020-10-14 23:44:12,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:12,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552362532] [2020-10-14 23:44:12,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:12,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:12,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:13,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:13,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:44:13,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:13,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 23:44:13,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:13,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:13,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:13,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 23:44:13,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:44:13,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:13,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:13,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:13,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:13,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:13,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:13,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:44:13,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:13,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:13,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:13,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:13,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:13,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:13,036 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 23:44:13,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552362532] [2020-10-14 23:44:13,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:13,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:13,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497675681] [2020-10-14 23:44:13,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:13,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:13,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:13,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:13,038 INFO L87 Difference]: Start difference. First operand 32392 states and 46342 transitions. Second operand 3 states. [2020-10-14 23:44:13,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:13,424 INFO L93 Difference]: Finished difference Result 75404 states and 108808 transitions. [2020-10-14 23:44:13,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:13,425 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-14 23:44:13,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:13,482 INFO L225 Difference]: With dead ends: 75404 [2020-10-14 23:44:13,482 INFO L226 Difference]: Without dead ends: 43146 [2020-10-14 23:44:13,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:13,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43146 states. [2020-10-14 23:44:15,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43146 to 43144. [2020-10-14 23:44:15,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43144 states. [2020-10-14 23:44:15,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43144 states to 43144 states and 61702 transitions. [2020-10-14 23:44:15,196 INFO L78 Accepts]: Start accepts. Automaton has 43144 states and 61702 transitions. Word has length 34 [2020-10-14 23:44:15,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:15,196 INFO L479 AbstractCegarLoop]: Abstraction has 43144 states and 61702 transitions. [2020-10-14 23:44:15,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:15,196 INFO L276 IsEmpty]: Start isEmpty. Operand 43144 states and 61702 transitions. [2020-10-14 23:44:15,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 23:44:15,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:15,224 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] [2020-10-14 23:44:15,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 23:44:15,224 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:15,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:15,225 INFO L82 PathProgramCache]: Analyzing trace with hash -2050650691, now seen corresponding path program 1 times [2020-10-14 23:44:15,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:15,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017790677] [2020-10-14 23:44:15,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:15,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:15,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:15,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:15,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:15,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 23:44:15,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:44:15,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 23:44:15,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:15,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:15,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:15,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 23:44:15,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:44:15,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:15,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:15,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:15,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:15,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:15,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:15,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:44:15,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:15,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:15,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:15,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:15,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:15,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:15,329 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 23:44:15,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017790677] [2020-10-14 23:44:15,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:15,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:15,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652574186] [2020-10-14 23:44:15,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:15,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:15,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:15,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:15,331 INFO L87 Difference]: Start difference. First operand 43144 states and 61702 transitions. Second operand 3 states. [2020-10-14 23:44:16,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:16,096 INFO L93 Difference]: Finished difference Result 74892 states and 109320 transitions. [2020-10-14 23:44:16,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:16,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-10-14 23:44:16,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:16,185 INFO L225 Difference]: With dead ends: 74892 [2020-10-14 23:44:16,185 INFO L226 Difference]: Without dead ends: 74890 [2020-10-14 23:44:16,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:16,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74890 states. [2020-10-14 23:44:17,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74890 to 64648. [2020-10-14 23:44:17,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64648 states. [2020-10-14 23:44:17,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64648 states to 64648 states and 89862 transitions. [2020-10-14 23:44:17,293 INFO L78 Accepts]: Start accepts. Automaton has 64648 states and 89862 transitions. Word has length 35 [2020-10-14 23:44:17,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:17,293 INFO L479 AbstractCegarLoop]: Abstraction has 64648 states and 89862 transitions. [2020-10-14 23:44:17,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:17,293 INFO L276 IsEmpty]: Start isEmpty. Operand 64648 states and 89862 transitions. [2020-10-14 23:44:17,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 23:44:17,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:17,341 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] [2020-10-14 23:44:17,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 23:44:17,342 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:17,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:17,342 INFO L82 PathProgramCache]: Analyzing trace with hash 250171899, now seen corresponding path program 1 times [2020-10-14 23:44:17,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:17,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181459732] [2020-10-14 23:44:17,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:17,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:17,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:17,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:17,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:17,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 23:44:17,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:44:17,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 23:44:17,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:17,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:17,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:17,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 23:44:17,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:44:17,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:17,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:17,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:17,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:17,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:17,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:17,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:44:17,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:17,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:17,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:17,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:17,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:17,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:17,451 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 23:44:17,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181459732] [2020-10-14 23:44:17,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:17,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:17,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027999713] [2020-10-14 23:44:17,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:17,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:17,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:17,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:17,454 INFO L87 Difference]: Start difference. First operand 64648 states and 89862 transitions. Second operand 3 states. [2020-10-14 23:44:18,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:18,450 INFO L93 Difference]: Finished difference Result 149644 states and 209672 transitions. [2020-10-14 23:44:18,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:18,451 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-10-14 23:44:18,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:18,578 INFO L225 Difference]: With dead ends: 149644 [2020-10-14 23:44:18,578 INFO L226 Difference]: Without dead ends: 85130 [2020-10-14 23:44:18,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:18,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85130 states. [2020-10-14 23:44:21,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85130 to 85128. [2020-10-14 23:44:21,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85128 states. [2020-10-14 23:44:21,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85128 states to 85128 states and 118022 transitions. [2020-10-14 23:44:21,531 INFO L78 Accepts]: Start accepts. Automaton has 85128 states and 118022 transitions. Word has length 35 [2020-10-14 23:44:21,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:21,532 INFO L479 AbstractCegarLoop]: Abstraction has 85128 states and 118022 transitions. [2020-10-14 23:44:21,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:21,532 INFO L276 IsEmpty]: Start isEmpty. Operand 85128 states and 118022 transitions. [2020-10-14 23:44:21,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:44:21,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:21,564 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] [2020-10-14 23:44:21,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 23:44:21,564 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:21,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:21,565 INFO L82 PathProgramCache]: Analyzing trace with hash 854553189, now seen corresponding path program 1 times [2020-10-14 23:44:21,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:21,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693660312] [2020-10-14 23:44:21,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:21,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:21,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:21,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:21,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:21,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:21,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:44:21,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:44:21,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 23:44:21,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:21,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:21,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:21,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 23:44:21,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:44:21,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:21,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:21,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:21,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:21,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:21,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:21,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:21,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:21,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:21,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:21,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:21,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:21,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:21,722 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 23:44:21,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693660312] [2020-10-14 23:44:21,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:21,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:21,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724614726] [2020-10-14 23:44:21,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:21,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:21,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:21,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:21,724 INFO L87 Difference]: Start difference. First operand 85128 states and 118022 transitions. Second operand 3 states. [2020-10-14 23:44:22,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:22,657 INFO L93 Difference]: Finished difference Result 129036 states and 179208 transitions. [2020-10-14 23:44:22,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:22,657 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-10-14 23:44:22,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:22,733 INFO L225 Difference]: With dead ends: 129036 [2020-10-14 23:44:22,733 INFO L226 Difference]: Without dead ends: 87050 [2020-10-14 23:44:22,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:22,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87050 states. [2020-10-14 23:44:25,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87050 to 87048. [2020-10-14 23:44:25,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87048 states. [2020-10-14 23:44:25,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87048 states to 87048 states and 119814 transitions. [2020-10-14 23:44:25,709 INFO L78 Accepts]: Start accepts. Automaton has 87048 states and 119814 transitions. Word has length 36 [2020-10-14 23:44:25,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:25,709 INFO L479 AbstractCegarLoop]: Abstraction has 87048 states and 119814 transitions. [2020-10-14 23:44:25,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:25,709 INFO L276 IsEmpty]: Start isEmpty. Operand 87048 states and 119814 transitions. [2020-10-14 23:44:25,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:44:25,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:25,748 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] [2020-10-14 23:44:25,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 23:44:25,749 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:25,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:25,749 INFO L82 PathProgramCache]: Analyzing trace with hash -834390553, now seen corresponding path program 1 times [2020-10-14 23:44:25,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:25,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846886293] [2020-10-14 23:44:25,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:25,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:25,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:25,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:25,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:25,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:44:25,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:44:25,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 23:44:25,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:25,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:25,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:25,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 23:44:25,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:44:25,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:25,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:25,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:25,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:25,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:25,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:25,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:25,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:25,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:25,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:25,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:25,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:25,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:25,867 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 23:44:25,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846886293] [2020-10-14 23:44:25,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:25,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:25,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665600345] [2020-10-14 23:44:25,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:25,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:25,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:25,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:25,869 INFO L87 Difference]: Start difference. First operand 87048 states and 119814 transitions. Second operand 3 states. [2020-10-14 23:44:26,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:26,488 INFO L93 Difference]: Finished difference Result 129036 states and 176136 transitions. [2020-10-14 23:44:26,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:26,488 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-10-14 23:44:26,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:26,571 INFO L225 Difference]: With dead ends: 129036 [2020-10-14 23:44:26,572 INFO L226 Difference]: Without dead ends: 87050 [2020-10-14 23:44:26,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:26,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87050 states. [2020-10-14 23:44:27,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87050 to 87048. [2020-10-14 23:44:27,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87048 states. [2020-10-14 23:44:27,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87048 states to 87048 states and 117766 transitions. [2020-10-14 23:44:27,816 INFO L78 Accepts]: Start accepts. Automaton has 87048 states and 117766 transitions. Word has length 36 [2020-10-14 23:44:27,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:27,816 INFO L479 AbstractCegarLoop]: Abstraction has 87048 states and 117766 transitions. [2020-10-14 23:44:27,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:27,817 INFO L276 IsEmpty]: Start isEmpty. Operand 87048 states and 117766 transitions. [2020-10-14 23:44:27,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:44:27,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:27,848 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] [2020-10-14 23:44:27,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 23:44:27,848 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:27,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:27,849 INFO L82 PathProgramCache]: Analyzing trace with hash -411688727, now seen corresponding path program 1 times [2020-10-14 23:44:27,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:27,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629524104] [2020-10-14 23:44:27,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:27,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:27,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:27,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:27,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:44:27,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:27,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 23:44:27,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:27,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:27,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:27,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 23:44:27,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:44:27,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:27,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:27,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:27,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:27,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:27,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:27,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:27,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:27,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:27,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:27,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:27,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:27,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:27,924 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 23:44:27,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629524104] [2020-10-14 23:44:27,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:27,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:27,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430876085] [2020-10-14 23:44:27,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:27,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:27,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:27,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:27,926 INFO L87 Difference]: Start difference. First operand 87048 states and 117766 transitions. Second operand 3 states. [2020-10-14 23:44:29,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:29,132 INFO L93 Difference]: Finished difference Result 147468 states and 202760 transitions. [2020-10-14 23:44:29,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:29,134 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-10-14 23:44:29,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:29,268 INFO L225 Difference]: With dead ends: 147468 [2020-10-14 23:44:29,268 INFO L226 Difference]: Without dead ends: 147466 [2020-10-14 23:44:29,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:29,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147466 states. [2020-10-14 23:44:32,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147466 to 131080. [2020-10-14 23:44:32,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131080 states. [2020-10-14 23:44:32,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131080 states to 131080 states and 172038 transitions. [2020-10-14 23:44:32,693 INFO L78 Accepts]: Start accepts. Automaton has 131080 states and 172038 transitions. Word has length 36 [2020-10-14 23:44:32,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:32,693 INFO L479 AbstractCegarLoop]: Abstraction has 131080 states and 172038 transitions. [2020-10-14 23:44:32,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:32,693 INFO L276 IsEmpty]: Start isEmpty. Operand 131080 states and 172038 transitions. [2020-10-14 23:44:32,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:44:32,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:32,760 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] [2020-10-14 23:44:32,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 23:44:32,760 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:32,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:32,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1889133863, now seen corresponding path program 1 times [2020-10-14 23:44:32,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:32,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841256563] [2020-10-14 23:44:32,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:32,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:32,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:32,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:32,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:32,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:44:32,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:32,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 23:44:32,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:32,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:32,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:32,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 23:44:32,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:44:32,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:32,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:32,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:32,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:32,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:32,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:32,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:44:32,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:32,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:32,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:32,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:32,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:32,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:32,830 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 23:44:32,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841256563] [2020-10-14 23:44:32,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:32,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:32,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250829364] [2020-10-14 23:44:32,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:32,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:32,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:32,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:32,832 INFO L87 Difference]: Start difference. First operand 131080 states and 172038 transitions. Second operand 3 states. [2020-10-14 23:44:34,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:34,710 INFO L93 Difference]: Finished difference Result 299020 states and 393224 transitions. [2020-10-14 23:44:34,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:34,710 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-10-14 23:44:34,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:34,869 INFO L225 Difference]: With dead ends: 299020 [2020-10-14 23:44:34,869 INFO L226 Difference]: Without dead ends: 169994 [2020-10-14 23:44:34,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:35,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169994 states. [2020-10-14 23:44:39,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169994 to 169992. [2020-10-14 23:44:39,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169992 states. [2020-10-14 23:44:39,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169992 states to 169992 states and 221190 transitions. [2020-10-14 23:44:39,732 INFO L78 Accepts]: Start accepts. Automaton has 169992 states and 221190 transitions. Word has length 36 [2020-10-14 23:44:39,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:39,732 INFO L479 AbstractCegarLoop]: Abstraction has 169992 states and 221190 transitions. [2020-10-14 23:44:39,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:39,732 INFO L276 IsEmpty]: Start isEmpty. Operand 169992 states and 221190 transitions. [2020-10-14 23:44:39,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:44:39,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:39,810 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] [2020-10-14 23:44:39,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 23:44:39,810 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:39,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:39,810 INFO L82 PathProgramCache]: Analyzing trace with hash 122766862, now seen corresponding path program 1 times [2020-10-14 23:44:39,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:39,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136448240] [2020-10-14 23:44:39,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:39,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:39,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:39,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:39,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:39,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:44:39,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:44:39,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 23:44:39,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:39,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:39,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:39,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 23:44:39,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:44:39,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:39,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:39,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:39,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:39,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:39,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:39,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:44:39,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:39,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:39,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:39,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:39,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:39,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:39,911 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 23:44:39,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136448240] [2020-10-14 23:44:39,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:39,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:39,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411908134] [2020-10-14 23:44:39,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:39,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:39,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:39,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:39,917 INFO L87 Difference]: Start difference. First operand 169992 states and 221190 transitions. Second operand 3 states. [2020-10-14 23:44:41,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:41,437 INFO L93 Difference]: Finished difference Result 252940 states and 326664 transitions. [2020-10-14 23:44:41,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:41,437 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-10-14 23:44:41,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:41,590 INFO L225 Difference]: With dead ends: 252940 [2020-10-14 23:44:41,590 INFO L226 Difference]: Without dead ends: 169994 [2020-10-14 23:44:41,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:41,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169994 states. [2020-10-14 23:44:46,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169994 to 169992. [2020-10-14 23:44:46,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169992 states. [2020-10-14 23:44:46,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169992 states to 169992 states and 217094 transitions. [2020-10-14 23:44:46,988 INFO L78 Accepts]: Start accepts. Automaton has 169992 states and 217094 transitions. Word has length 37 [2020-10-14 23:44:46,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:46,989 INFO L479 AbstractCegarLoop]: Abstraction has 169992 states and 217094 transitions. [2020-10-14 23:44:46,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:46,989 INFO L276 IsEmpty]: Start isEmpty. Operand 169992 states and 217094 transitions. [2020-10-14 23:44:47,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:44:47,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:47,062 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] [2020-10-14 23:44:47,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 23:44:47,062 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:47,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:47,062 INFO L82 PathProgramCache]: Analyzing trace with hash 545468688, now seen corresponding path program 1 times [2020-10-14 23:44:47,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:47,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276323931] [2020-10-14 23:44:47,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:47,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:47,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:47,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:47,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:44:47,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:47,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 23:44:47,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:47,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:47,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:47,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 23:44:47,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:44:47,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:47,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:47,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:47,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:47,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:47,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:47,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:44:47,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:47,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:47,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:47,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:47,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:47,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:47,125 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 23:44:47,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276323931] [2020-10-14 23:44:47,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:47,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:47,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444132503] [2020-10-14 23:44:47,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:47,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:47,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:47,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:47,127 INFO L87 Difference]: Start difference. First operand 169992 states and 217094 transitions. Second operand 3 states. [2020-10-14 23:44:49,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:49,098 INFO L93 Difference]: Finished difference Result 284684 states and 368648 transitions. [2020-10-14 23:44:49,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:49,099 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-10-14 23:44:49,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:49,402 INFO L225 Difference]: With dead ends: 284684 [2020-10-14 23:44:49,402 INFO L226 Difference]: Without dead ends: 284682 [2020-10-14 23:44:49,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:49,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284682 states. [2020-10-14 23:44:52,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284682 to 260104. [2020-10-14 23:44:52,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260104 states. [2020-10-14 23:44:52,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260104 states to 260104 states and 323590 transitions. [2020-10-14 23:44:52,429 INFO L78 Accepts]: Start accepts. Automaton has 260104 states and 323590 transitions. Word has length 37 [2020-10-14 23:44:52,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:52,429 INFO L479 AbstractCegarLoop]: Abstraction has 260104 states and 323590 transitions. [2020-10-14 23:44:52,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:52,429 INFO L276 IsEmpty]: Start isEmpty. Operand 260104 states and 323590 transitions. [2020-10-14 23:44:52,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:44:52,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:52,580 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] [2020-10-14 23:44:52,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 23:44:52,581 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:52,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:52,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1448676018, now seen corresponding path program 1 times [2020-10-14 23:44:52,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:52,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775166765] [2020-10-14 23:44:52,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:52,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:52,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:52,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:52,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:44:52,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:52,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 23:44:52,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:52,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:52,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:52,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 23:44:52,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:44:52,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:52,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:52,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:52,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:52,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:52,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:52,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:44:52,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:52,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:52,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:52,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:52,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:52,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:52,666 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 23:44:52,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775166765] [2020-10-14 23:44:52,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:52,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:52,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326956810] [2020-10-14 23:44:52,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:52,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:52,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:52,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:52,667 INFO L87 Difference]: Start difference. First operand 260104 states and 323590 transitions. Second operand 3 states. [2020-10-14 23:44:58,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:58,377 INFO L93 Difference]: Finished difference Result 591884 states and 737288 transitions. [2020-10-14 23:44:58,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:58,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-10-14 23:44:58,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:58,711 INFO L225 Difference]: With dead ends: 591884 [2020-10-14 23:44:58,711 INFO L226 Difference]: Without dead ends: 333834 [2020-10-14 23:44:59,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:59,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333834 states. [2020-10-14 23:45:03,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333834 to 333832. [2020-10-14 23:45:03,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333832 states. [2020-10-14 23:45:04,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333832 states to 333832 states and 409606 transitions. [2020-10-14 23:45:04,120 INFO L78 Accepts]: Start accepts. Automaton has 333832 states and 409606 transitions. Word has length 37 [2020-10-14 23:45:04,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:45:04,121 INFO L479 AbstractCegarLoop]: Abstraction has 333832 states and 409606 transitions. [2020-10-14 23:45:04,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:45:04,121 INFO L276 IsEmpty]: Start isEmpty. Operand 333832 states and 409606 transitions. [2020-10-14 23:45:04,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:45:04,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:45:04,273 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] [2020-10-14 23:45:04,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 23:45:04,273 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:45:04,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:45:04,273 INFO L82 PathProgramCache]: Analyzing trace with hash -270124004, now seen corresponding path program 1 times [2020-10-14 23:45:04,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:45:04,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139057786] [2020-10-14 23:45:04,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:45:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:04,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:04,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:04,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:04,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:04,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:45:04,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:45:04,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 23:45:04,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:04,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:04,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:45:04,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 23:45:04,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:45:04,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:45:04,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:45:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:04,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:04,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:04,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:45:04,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:45:04,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:45:04,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:04,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:04,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:45:04,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:45:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:45:04,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:45:04,366 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 23:45:04,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139057786] [2020-10-14 23:45:04,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:45:04,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:45:04,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194583414] [2020-10-14 23:45:04,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:45:04,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:45:04,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:45:04,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:45:04,368 INFO L87 Difference]: Start difference. First operand 333832 states and 409606 transitions. Second operand 3 states. [2020-10-14 23:45:10,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:45:10,809 INFO L93 Difference]: Finished difference Result 503820 states and 618504 transitions. [2020-10-14 23:45:10,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:45:10,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-10-14 23:45:10,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:45:11,149 INFO L225 Difference]: With dead ends: 503820 [2020-10-14 23:45:11,150 INFO L226 Difference]: Without dead ends: 339978 [2020-10-14 23:45:11,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:45:11,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339978 states. [2020-10-14 23:45:15,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339978 to 339976. [2020-10-14 23:45:15,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339976 states. [2020-10-14 23:45:16,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339976 states to 339976 states and 413702 transitions. [2020-10-14 23:45:16,670 INFO L78 Accepts]: Start accepts. Automaton has 339976 states and 413702 transitions. Word has length 38 [2020-10-14 23:45:16,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:45:16,670 INFO L479 AbstractCegarLoop]: Abstraction has 339976 states and 413702 transitions. [2020-10-14 23:45:16,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:45:16,670 INFO L276 IsEmpty]: Start isEmpty. Operand 339976 states and 413702 transitions. [2020-10-14 23:45:16,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:45:16,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:45:16,835 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] [2020-10-14 23:45:16,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 23:45:16,835 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:45:16,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:45:16,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1959067746, now seen corresponding path program 1 times [2020-10-14 23:45:16,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:45:16,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891553308] [2020-10-14 23:45:16,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:45:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:16,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:16,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:16,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:16,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:45:16,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:45:16,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 23:45:16,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:16,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:16,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:45:16,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 23:45:16,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:45:16,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:45:16,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:45:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:16,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:16,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:16,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:45:16,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:45:16,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:45:16,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:16,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:16,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:45:16,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:45:16,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:45:16,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:45:16,899 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 23:45:16,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891553308] [2020-10-14 23:45:16,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:45:16,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:45:16,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346152800] [2020-10-14 23:45:16,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:45:16,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:45:16,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:45:16,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:45:16,902 INFO L87 Difference]: Start difference. First operand 339976 states and 413702 transitions. Second operand 3 states. [2020-10-14 23:45:24,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:45:24,840 INFO L93 Difference]: Finished difference Result 557068 states and 679944 transitions. [2020-10-14 23:45:24,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:45:24,841 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-10-14 23:45:24,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:45:25,475 INFO L225 Difference]: With dead ends: 557068 [2020-10-14 23:45:25,475 INFO L226 Difference]: Without dead ends: 557066 [2020-10-14 23:45:25,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:45:25,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557066 states. [2020-10-14 23:45:31,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557066 to 524296. [2020-10-14 23:45:31,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524296 states. [2020-10-14 23:45:40,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524296 states to 524296 states and 622598 transitions. [2020-10-14 23:45:40,930 INFO L78 Accepts]: Start accepts. Automaton has 524296 states and 622598 transitions. Word has length 38 [2020-10-14 23:45:40,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:45:40,930 INFO L479 AbstractCegarLoop]: Abstraction has 524296 states and 622598 transitions. [2020-10-14 23:45:40,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:45:40,930 INFO L276 IsEmpty]: Start isEmpty. Operand 524296 states and 622598 transitions. [2020-10-14 23:45:41,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:45:41,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:45:41,290 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] [2020-10-14 23:45:41,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 23:45:41,290 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:45:41,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:45:41,291 INFO L82 PathProgramCache]: Analyzing trace with hash 341754844, now seen corresponding path program 1 times [2020-10-14 23:45:41,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:45:41,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100947336] [2020-10-14 23:45:41,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:45:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:41,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:41,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:41,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:41,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:45:41,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:45:41,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 23:45:41,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:41,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:41,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:45:41,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 23:45:41,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:45:41,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:45:41,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:45:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:41,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:41,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:41,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:45:41,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:45:41,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:45:41,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:41,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:41,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:45:41,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:45:41,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:45:41,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:45:41,361 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 23:45:41,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100947336] [2020-10-14 23:45:41,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:45:41,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:45:41,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294323460] [2020-10-14 23:45:41,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:45:41,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:45:41,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:45:41,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:45:41,363 INFO L87 Difference]: Start difference. First operand 524296 states and 622598 transitions. Second operand 3 states. [2020-10-14 23:45:53,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:45:53,639 INFO L93 Difference]: Finished difference Result 1179660 states and 1392648 transitions. [2020-10-14 23:45:53,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:45:53,640 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-10-14 23:45:53,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:45:54,355 INFO L225 Difference]: With dead ends: 1179660 [2020-10-14 23:45:54,355 INFO L226 Difference]: Without dead ends: 663562 [2020-10-14 23:45:55,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:45:55,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663562 states. [2020-10-14 23:46:11,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663562 to 663560. [2020-10-14 23:46:11,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 663560 states. [2020-10-14 23:46:13,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663560 states to 663560 states and 770054 transitions. [2020-10-14 23:46:13,858 INFO L78 Accepts]: Start accepts. Automaton has 663560 states and 770054 transitions. Word has length 38 [2020-10-14 23:46:13,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:46:13,859 INFO L479 AbstractCegarLoop]: Abstraction has 663560 states and 770054 transitions. [2020-10-14 23:46:13,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:46:13,859 INFO L276 IsEmpty]: Start isEmpty. Operand 663560 states and 770054 transitions. [2020-10-14 23:46:14,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 23:46:14,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:46:14,210 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] [2020-10-14 23:46:14,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 23:46:14,210 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:46:14,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:46:14,211 INFO L82 PathProgramCache]: Analyzing trace with hash -601341789, now seen corresponding path program 1 times [2020-10-14 23:46:14,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:46:14,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855662063] [2020-10-14 23:46:14,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:46:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:46:14,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:46:14,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:46:14,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:46:14,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:46:14,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 23:46:14,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:46:14,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 23:46:14,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:46:14,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:46:14,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:46:14,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 23:46:14,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:46:14,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:46:14,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:46:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:46:14,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:46:14,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:46:14,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:46:14,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:46:14,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:46:14,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:46:14,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:46:14,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:46:14,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:46:14,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:46:14,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:46:14,289 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 23:46:14,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855662063] [2020-10-14 23:46:14,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:46:14,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:46:14,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100036503] [2020-10-14 23:46:14,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:46:14,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:46:14,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:46:14,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:46:14,291 INFO L87 Difference]: Start difference. First operand 663560 states and 770054 transitions. Second operand 3 states. [2020-10-14 23:46:29,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:46:29,372 INFO L93 Difference]: Finished difference Result 1073162 states and 1236999 transitions. [2020-10-14 23:46:29,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:46:29,373 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-10-14 23:46:29,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:46:30,961 INFO L225 Difference]: With dead ends: 1073162 [2020-10-14 23:46:30,962 INFO L226 Difference]: Without dead ends: 1073160 [2020-10-14 23:46:31,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:46:31,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073160 states. [2020-10-14 23:46:56,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073160 to 1040392. [2020-10-14 23:46:56,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040392 states. [2020-10-14 23:46:59,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040392 states to 1040392 states and 1187846 transitions. [2020-10-14 23:46:59,494 INFO L78 Accepts]: Start accepts. Automaton has 1040392 states and 1187846 transitions. Word has length 39 [2020-10-14 23:46:59,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:46:59,494 INFO L479 AbstractCegarLoop]: Abstraction has 1040392 states and 1187846 transitions. [2020-10-14 23:46:59,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:46:59,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1040392 states and 1187846 transitions.