/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=NARROWEST --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/systemc/mem_slave_tlm.3.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:41:15,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:41:15,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:41:15,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:41:15,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:41:15,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:41:15,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:41:15,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:41:15,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:41:15,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:41:15,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:41:15,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:41:15,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:41:15,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:41:15,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:41:15,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:41:15,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:41:15,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:41:15,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:41:15,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:41:15,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:41:15,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:41:15,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:41:15,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:41:15,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:41:15,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:41:15,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:41:15,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:41:15,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:41:15,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:41:15,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:41:15,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:41:15,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:41:15,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:41:15,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:41:15,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:41:15,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:41:15,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:41:15,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:41:15,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:41:15,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:41:15,332 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 [2020-10-13 15:41:15,373 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:41:15,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:41:15,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:41:15,375 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:41:15,375 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:41:15,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:41:15,376 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:41:15,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:41:15,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:41:15,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:41:15,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:41:15,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:41:15,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:41:15,378 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:41:15,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:41:15,379 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:41:15,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:41:15,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:41:15,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:41:15,379 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:41:15,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:41:15,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:41:15,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:41:15,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:41:15,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:41:15,381 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:41:15,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:41:15,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:41:15,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:41:15,381 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 15:41:15,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:41:15,710 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:41:15,713 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:41:15,715 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:41:15,715 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:41:15,716 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/mem_slave_tlm.3.cil.c [2020-10-13 15:41:15,774 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5421a896/f4a7810b4af443a78ff0e62f41d09421/FLAG89d335741 [2020-10-13 15:41:16,227 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:41:16,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/mem_slave_tlm.3.cil.c [2020-10-13 15:41:16,243 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5421a896/f4a7810b4af443a78ff0e62f41d09421/FLAG89d335741 [2020-10-13 15:41:16,558 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5421a896/f4a7810b4af443a78ff0e62f41d09421 [2020-10-13 15:41:16,568 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:41:16,570 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:41:16,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:41:16,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:41:16,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:41:16,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:41:16" (1/1) ... [2020-10-13 15:41:16,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2584cbd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:41:16, skipping insertion in model container [2020-10-13 15:41:16,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:41:16" (1/1) ... [2020-10-13 15:41:16,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:41:16,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:41:16,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:41:16,961 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:41:17,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:41:17,147 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:41:17,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:41:17 WrapperNode [2020-10-13 15:41:17,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:41:17,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:41:17,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:41:17,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:41:17,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:41:17" (1/1) ... [2020-10-13 15:41:17,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:41:17" (1/1) ... [2020-10-13 15:41:17,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:41:17" (1/1) ... [2020-10-13 15:41:17,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:41:17" (1/1) ... [2020-10-13 15:41:17,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:41:17" (1/1) ... [2020-10-13 15:41:17,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:41:17" (1/1) ... [2020-10-13 15:41:17,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:41:17" (1/1) ... [2020-10-13 15:41:17,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:41:17,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:41:17,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:41:17,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:41:17,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:41:17" (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 [2020-10-13 15:41:17,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:41:17,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:41:17,305 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-13 15:41:17,305 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_read [2020-10-13 15:41:17,305 INFO L138 BoogieDeclarations]: Found implementation of procedure s_memory_write [2020-10-13 15:41:17,305 INFO L138 BoogieDeclarations]: Found implementation of procedure m_run [2020-10-13 15:41:17,305 INFO L138 BoogieDeclarations]: Found implementation of procedure s_run [2020-10-13 15:41:17,305 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-13 15:41:17,306 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-13 15:41:17,306 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:41:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:41:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 15:41:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-13 15:41:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_read [2020-10-13 15:41:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure s_memory_write [2020-10-13 15:41:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure m_run [2020-10-13 15:41:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure s_run [2020-10-13 15:41:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-13 15:41:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-13 15:41:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:41:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:41:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:41:18,492 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:41:18,493 INFO L295 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-13 15:41:18,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:41:18 BoogieIcfgContainer [2020-10-13 15:41:18,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:41:18,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:41:18,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:41:18,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:41:18,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:41:16" (1/3) ... [2020-10-13 15:41:18,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18123279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:41:18, skipping insertion in model container [2020-10-13 15:41:18,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:41:17" (2/3) ... [2020-10-13 15:41:18,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18123279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:41:18, skipping insertion in model container [2020-10-13 15:41:18,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:41:18" (3/3) ... [2020-10-13 15:41:18,510 INFO L109 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.3.cil.c [2020-10-13 15:41:18,519 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:41:18,526 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:41:18,538 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:41:18,563 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:41:18,564 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:41:18,564 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:41:18,564 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:41:18,564 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:41:18,564 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:41:18,564 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:41:18,565 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:41:18,587 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states. [2020-10-13 15:41:18,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 15:41:18,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:18,600 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] [2020-10-13 15:41:18,601 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:18,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:18,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1983901195, now seen corresponding path program 1 times [2020-10-13 15:41:18,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:18,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787546560] [2020-10-13 15:41:18,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:18,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:19,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:19,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:19,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:19,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:19,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:19,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:19,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:20,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:20,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:21,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:22,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:22,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:23,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:23,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:23,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 15:41:23,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:41:23,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:41:23,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:23,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:23,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 15:41:23,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:23,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 15:41:24,208 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 15:41:24,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:24,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:24,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:24,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:24,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:24,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 15:41:24,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:24,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:24,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:24,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:24,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:24,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:41:24,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787546560] [2020-10-13 15:41:24,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:24,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 15:41:24,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575388910] [2020-10-13 15:41:24,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 15:41:24,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:24,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 15:41:24,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 15:41:24,289 INFO L87 Difference]: Start difference. First operand 302 states. Second operand 3 states. [2020-10-13 15:41:25,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:25,622 INFO L93 Difference]: Finished difference Result 627 states and 1115 transitions. [2020-10-13 15:41:25,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 15:41:25,623 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-10-13 15:41:25,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:25,639 INFO L225 Difference]: With dead ends: 627 [2020-10-13 15:41:25,640 INFO L226 Difference]: Without dead ends: 344 [2020-10-13 15:41:25,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 15:41:25,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-10-13 15:41:25,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 293. [2020-10-13 15:41:25,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-10-13 15:41:25,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 492 transitions. [2020-10-13 15:41:25,726 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 492 transitions. Word has length 39 [2020-10-13 15:41:25,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:25,726 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 492 transitions. [2020-10-13 15:41:25,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 15:41:25,727 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 492 transitions. [2020-10-13 15:41:25,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 15:41:25,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:25,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:41:25,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:41:25,731 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:25,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:25,731 INFO L82 PathProgramCache]: Analyzing trace with hash 2013276897, now seen corresponding path program 1 times [2020-10-13 15:41:25,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:25,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557346044] [2020-10-13 15:41:25,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:25,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:25,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:25,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:25,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:26,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:26,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:26,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:26,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:26,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:26,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:26,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:26,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:27,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:27,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:30,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:30,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 15:41:30,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:41:30,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4906 [2020-10-13 15:41:30,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:30,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:41:30,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 15:41:30,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:41:30,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:41:30,833 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 15:41:30,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:30,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:30,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:30,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:30,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:30,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 15:41:30,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:30,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:30,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:30,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:30,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:30,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:41:30,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557346044] [2020-10-13 15:41:30,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:30,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:41:30,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880872524] [2020-10-13 15:41:30,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:41:30,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:30,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:41:30,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:41:30,867 INFO L87 Difference]: Start difference. First operand 293 states and 492 transitions. Second operand 4 states. [2020-10-13 15:41:31,157 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 15:41:32,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:32,878 INFO L93 Difference]: Finished difference Result 860 states and 1413 transitions. [2020-10-13 15:41:32,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:32,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-13 15:41:32,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:32,891 INFO L225 Difference]: With dead ends: 860 [2020-10-13 15:41:32,895 INFO L226 Difference]: Without dead ends: 593 [2020-10-13 15:41:32,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:32,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-10-13 15:41:32,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 526. [2020-10-13 15:41:32,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-10-13 15:41:32,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 860 transitions. [2020-10-13 15:41:32,998 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 860 transitions. Word has length 40 [2020-10-13 15:41:32,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:32,998 INFO L479 AbstractCegarLoop]: Abstraction has 526 states and 860 transitions. [2020-10-13 15:41:32,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:41:32,999 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 860 transitions. [2020-10-13 15:41:33,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-13 15:41:33,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:33,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:41:33,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:41:33,005 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:33,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:33,005 INFO L82 PathProgramCache]: Analyzing trace with hash 2039115630, now seen corresponding path program 1 times [2020-10-13 15:41:33,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:33,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818931492] [2020-10-13 15:41:33,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:33,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:33,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:33,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:33,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:33,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:33,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:33,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:33,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:33,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:33,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:34,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:35,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:38,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:38,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 15:41:38,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 15:41:38,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:41:38,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:38,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:41:38,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 15:41:38,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 15:41:38,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:38,177 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 15:41:38,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:38,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:38,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:38,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:38,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:38,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:41:38,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:38,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:38,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:38,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:38,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:38,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:41:38,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818931492] [2020-10-13 15:41:38,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:38,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:41:38,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843796136] [2020-10-13 15:41:38,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:41:38,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:38,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:41:38,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:41:38,202 INFO L87 Difference]: Start difference. First operand 526 states and 860 transitions. Second operand 4 states. [2020-10-13 15:41:38,345 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 15:41:40,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:40,027 INFO L93 Difference]: Finished difference Result 1528 states and 2497 transitions. [2020-10-13 15:41:40,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:40,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-13 15:41:40,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:40,042 INFO L225 Difference]: With dead ends: 1528 [2020-10-13 15:41:40,043 INFO L226 Difference]: Without dead ends: 1035 [2020-10-13 15:41:40,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:40,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2020-10-13 15:41:40,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 940. [2020-10-13 15:41:40,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 940 states. [2020-10-13 15:41:40,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1557 transitions. [2020-10-13 15:41:40,157 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1557 transitions. Word has length 43 [2020-10-13 15:41:40,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:40,157 INFO L479 AbstractCegarLoop]: Abstraction has 940 states and 1557 transitions. [2020-10-13 15:41:40,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:41:40,158 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1557 transitions. [2020-10-13 15:41:40,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 15:41:40,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:40,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:41:40,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:41:40,161 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:40,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:40,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1701363981, now seen corresponding path program 1 times [2020-10-13 15:41:40,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:40,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603048678] [2020-10-13 15:41:40,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:40,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:40,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:40,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:40,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:40,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:40,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:40,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:40,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:40,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:40,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:41,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:41,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:42,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:42,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:44,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:44,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 15:41:44,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:41:44,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4162 [2020-10-13 15:41:44,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:44,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:41:44,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:41:44,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:41:44,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:44,484 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 15:41:44,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:44,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:44,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:44,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:44,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:44,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:41:44,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:44,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:44,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:44,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:44,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:41:44,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603048678] [2020-10-13 15:41:44,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:44,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:41:44,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885840541] [2020-10-13 15:41:44,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:41:44,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:44,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:41:44,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:41:44,505 INFO L87 Difference]: Start difference. First operand 940 states and 1557 transitions. Second operand 4 states. [2020-10-13 15:41:44,642 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 15:41:46,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:46,334 INFO L93 Difference]: Finished difference Result 2241 states and 3678 transitions. [2020-10-13 15:41:46,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:46,337 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-13 15:41:46,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:46,356 INFO L225 Difference]: With dead ends: 2241 [2020-10-13 15:41:46,357 INFO L226 Difference]: Without dead ends: 1314 [2020-10-13 15:41:46,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:46,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2020-10-13 15:41:46,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1178. [2020-10-13 15:41:46,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1178 states. [2020-10-13 15:41:46,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1864 transitions. [2020-10-13 15:41:46,459 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1864 transitions. Word has length 42 [2020-10-13 15:41:46,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:46,461 INFO L479 AbstractCegarLoop]: Abstraction has 1178 states and 1864 transitions. [2020-10-13 15:41:46,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:41:46,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1864 transitions. [2020-10-13 15:41:46,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 15:41:46,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:46,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:41:46,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:41:46,465 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:46,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:46,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1129417961, now seen corresponding path program 1 times [2020-10-13 15:41:46,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:46,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55920655] [2020-10-13 15:41:46,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:46,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:46,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:46,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:46,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:46,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:47,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:48,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:48,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 15:41:48,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:41:48,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1811 [2020-10-13 15:41:48,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:48,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:41:48,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 15:41:48,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:41:48,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:48,438 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 15:41:48,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:48,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:48,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:48,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:48,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:48,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:41:48,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:48,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:48,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:48,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:48,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:48,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:41:48,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55920655] [2020-10-13 15:41:48,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:48,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:41:48,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208120737] [2020-10-13 15:41:48,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:41:48,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:48,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:41:48,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:41:48,466 INFO L87 Difference]: Start difference. First operand 1178 states and 1864 transitions. Second operand 4 states. [2020-10-13 15:41:48,599 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 15:41:50,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:50,114 INFO L93 Difference]: Finished difference Result 3574 states and 5673 transitions. [2020-10-13 15:41:50,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:50,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-10-13 15:41:50,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:50,129 INFO L225 Difference]: With dead ends: 3574 [2020-10-13 15:41:50,129 INFO L226 Difference]: Without dead ends: 2421 [2020-10-13 15:41:50,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:50,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2020-10-13 15:41:50,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2184. [2020-10-13 15:41:50,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2184 states. [2020-10-13 15:41:50,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 3362 transitions. [2020-10-13 15:41:50,289 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 3362 transitions. Word has length 52 [2020-10-13 15:41:50,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:50,289 INFO L479 AbstractCegarLoop]: Abstraction has 2184 states and 3362 transitions. [2020-10-13 15:41:50,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:41:50,290 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 3362 transitions. [2020-10-13 15:41:50,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 15:41:50,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:50,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:41:50,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:41:50,293 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:50,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:50,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1665889234, now seen corresponding path program 1 times [2020-10-13 15:41:50,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:50,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738823371] [2020-10-13 15:41:50,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:50,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:50,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:51,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:51,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 15:41:51,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:41:51,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 705 [2020-10-13 15:41:51,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:51,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 15:41:51,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:41:51,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 15:41:51,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:51,163 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 15:41:51,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:51,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:51,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:51,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:51,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:51,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:51,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:41:51,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:51,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:51,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:51,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:51,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:51,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:41:51,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738823371] [2020-10-13 15:41:51,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:51,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:41:51,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354014878] [2020-10-13 15:41:51,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:41:51,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:51,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:41:51,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:41:51,185 INFO L87 Difference]: Start difference. First operand 2184 states and 3362 transitions. Second operand 4 states. [2020-10-13 15:41:51,304 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 15:41:52,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:52,797 INFO L93 Difference]: Finished difference Result 5614 states and 8847 transitions. [2020-10-13 15:41:52,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:52,798 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-10-13 15:41:52,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:52,820 INFO L225 Difference]: With dead ends: 5614 [2020-10-13 15:41:52,821 INFO L226 Difference]: Without dead ends: 3457 [2020-10-13 15:41:52,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:52,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3457 states. [2020-10-13 15:41:53,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3457 to 3134. [2020-10-13 15:41:53,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3134 states. [2020-10-13 15:41:53,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3134 states to 3134 states and 4931 transitions. [2020-10-13 15:41:53,093 INFO L78 Accepts]: Start accepts. Automaton has 3134 states and 4931 transitions. Word has length 52 [2020-10-13 15:41:53,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:53,094 INFO L479 AbstractCegarLoop]: Abstraction has 3134 states and 4931 transitions. [2020-10-13 15:41:53,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:41:53,095 INFO L276 IsEmpty]: Start isEmpty. Operand 3134 states and 4931 transitions. [2020-10-13 15:41:53,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 15:41:53,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:53,099 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:41:53,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:41:53,099 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:53,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:53,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1900125979, now seen corresponding path program 1 times [2020-10-13 15:41:53,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:53,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392973148] [2020-10-13 15:41:53,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:53,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:53,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:53,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:53,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:53,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:53,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:53,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:54,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:54,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:54,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:55,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:55,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:55,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:58,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:58,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 15:41:58,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 15:41:58,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:41:58,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:58,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:41:58,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:41:58,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:41:58,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:58,253 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 15:41:58,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:58,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:58,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:58,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:58,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:58,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:41:58,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:58,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:58,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:58,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:58,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:58,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 15:41:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:58,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:58,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:58,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:41:58,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:58,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:41:58,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:58,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:58,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 15:41:58,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:58,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:41:58,357 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 15:41:58,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392973148] [2020-10-13 15:41:58,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:58,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:58,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545134945] [2020-10-13 15:41:58,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:58,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:58,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:58,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:58,360 INFO L87 Difference]: Start difference. First operand 3134 states and 4931 transitions. Second operand 5 states. [2020-10-13 15:41:58,482 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 15:42:00,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:00,055 INFO L93 Difference]: Finished difference Result 6497 states and 10160 transitions. [2020-10-13 15:42:00,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:42:00,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-13 15:42:00,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:00,074 INFO L225 Difference]: With dead ends: 6497 [2020-10-13 15:42:00,075 INFO L226 Difference]: Without dead ends: 3381 [2020-10-13 15:42:00,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:42:00,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3381 states. [2020-10-13 15:42:00,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3381 to 3125. [2020-10-13 15:42:00,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3125 states. [2020-10-13 15:42:00,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 4920 transitions. [2020-10-13 15:42:00,338 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 4920 transitions. Word has length 63 [2020-10-13 15:42:00,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:00,339 INFO L479 AbstractCegarLoop]: Abstraction has 3125 states and 4920 transitions. [2020-10-13 15:42:00,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:42:00,339 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 4920 transitions. [2020-10-13 15:42:00,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 15:42:00,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:00,343 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:42:00,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:42:00,343 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:00,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:00,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1008055907, now seen corresponding path program 1 times [2020-10-13 15:42:00,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:00,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922223744] [2020-10-13 15:42:00,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:00,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:00,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:00,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:00,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:00,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:00,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:00,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:00,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:00,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:00,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:02,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:05,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:05,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 15:42:05,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:42:05,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 15:42:05,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:05,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:42:05,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 15:42:05,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:42:05,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:05,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:05,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:05,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:05,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:05,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:05,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:42:05,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:05,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:05,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:05,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:05,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:05,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 15:42:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:05,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:05,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:05,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:42:05,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:05,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 15:42:05,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:05,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:42:05,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:05,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:42:05,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:42:05,603 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:42:05,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922223744] [2020-10-13 15:42:05,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:05,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:42:05,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335465783] [2020-10-13 15:42:05,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:42:05,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:05,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:42:05,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:42:05,610 INFO L87 Difference]: Start difference. First operand 3125 states and 4920 transitions. Second operand 5 states. [2020-10-13 15:42:05,956 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 15:42:07,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:07,730 INFO L93 Difference]: Finished difference Result 7116 states and 11582 transitions. [2020-10-13 15:42:07,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:42:07,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-13 15:42:07,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:07,760 INFO L225 Difference]: With dead ends: 7116 [2020-10-13 15:42:07,761 INFO L226 Difference]: Without dead ends: 4009 [2020-10-13 15:42:07,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:42:07,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4009 states. [2020-10-13 15:42:08,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4009 to 3725. [2020-10-13 15:42:08,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3725 states. [2020-10-13 15:42:08,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3725 states to 3725 states and 6018 transitions. [2020-10-13 15:42:08,102 INFO L78 Accepts]: Start accepts. Automaton has 3725 states and 6018 transitions. Word has length 63 [2020-10-13 15:42:08,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:08,102 INFO L479 AbstractCegarLoop]: Abstraction has 3725 states and 6018 transitions. [2020-10-13 15:42:08,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:42:08,103 INFO L276 IsEmpty]: Start isEmpty. Operand 3725 states and 6018 transitions. [2020-10-13 15:42:08,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 15:42:08,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:08,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:42:08,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:42:08,105 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:08,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:08,106 INFO L82 PathProgramCache]: Analyzing trace with hash 213321994, now seen corresponding path program 1 times [2020-10-13 15:42:08,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:08,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352734672] [2020-10-13 15:42:08,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:08,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:08,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:08,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:08,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 15:42:08,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:42:08,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-10-13 15:42:08,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:08,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:42:08,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 15:42:08,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 15:42:08,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:08,717 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 15:42:08,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:08,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:08,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:08,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:08,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:08,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:42:08,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:08,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:08,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:08,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:08,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:08,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:42:08,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352734672] [2020-10-13 15:42:08,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:08,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:42:08,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891050102] [2020-10-13 15:42:08,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:42:08,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:08,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:42:08,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:42:08,737 INFO L87 Difference]: Start difference. First operand 3725 states and 6018 transitions. Second operand 4 states. [2020-10-13 15:42:08,968 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 15:42:10,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:10,544 INFO L93 Difference]: Finished difference Result 6872 states and 11491 transitions. [2020-10-13 15:42:10,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:42:10,545 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-13 15:42:10,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:10,599 INFO L225 Difference]: With dead ends: 6872 [2020-10-13 15:42:10,599 INFO L226 Difference]: Without dead ends: 6868 [2020-10-13 15:42:10,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:42:10,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6868 states. [2020-10-13 15:42:11,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6868 to 6291. [2020-10-13 15:42:11,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6291 states. [2020-10-13 15:42:11,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6291 states to 6291 states and 10733 transitions. [2020-10-13 15:42:11,188 INFO L78 Accepts]: Start accepts. Automaton has 6291 states and 10733 transitions. Word has length 63 [2020-10-13 15:42:11,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:11,188 INFO L479 AbstractCegarLoop]: Abstraction has 6291 states and 10733 transitions. [2020-10-13 15:42:11,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:42:11,188 INFO L276 IsEmpty]: Start isEmpty. Operand 6291 states and 10733 transitions. [2020-10-13 15:42:11,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-13 15:42:11,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:11,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:42:11,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:42:11,193 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:11,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:11,194 INFO L82 PathProgramCache]: Analyzing trace with hash -945736246, now seen corresponding path program 1 times [2020-10-13 15:42:11,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:11,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648113112] [2020-10-13 15:42:11,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:11,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:11,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:11,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:12,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:12,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 15:42:12,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:42:12,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1058 [2020-10-13 15:42:12,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:42:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 15:42:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 15:42:12,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:12,404 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 15:42:12,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:12,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:12,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:12,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:12,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:12,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:42:12,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:12,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:12,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:12,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:12,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:12,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 15:42:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:12,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:12,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:12,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 15:42:12,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:12,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 15:42:12,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:12,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:42:12,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:12,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:42:12,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:12,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:42:12,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648113112] [2020-10-13 15:42:12,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:12,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 15:42:12,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185558256] [2020-10-13 15:42:12,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 15:42:12,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:12,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 15:42:12,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:42:12,550 INFO L87 Difference]: Start difference. First operand 6291 states and 10733 transitions. Second operand 7 states. [2020-10-13 15:42:12,784 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 15:42:13,373 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 15:42:15,387 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 15:42:16,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:16,794 INFO L93 Difference]: Finished difference Result 17781 states and 33894 transitions. [2020-10-13 15:42:16,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 15:42:16,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-10-13 15:42:16,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:16,855 INFO L225 Difference]: With dead ends: 17781 [2020-10-13 15:42:16,855 INFO L226 Difference]: Without dead ends: 13460 [2020-10-13 15:42:16,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-13 15:42:16,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13460 states. [2020-10-13 15:42:17,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13460 to 12066. [2020-10-13 15:42:17,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12066 states. [2020-10-13 15:42:17,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12066 states to 12066 states and 22638 transitions. [2020-10-13 15:42:17,810 INFO L78 Accepts]: Start accepts. Automaton has 12066 states and 22638 transitions. Word has length 77 [2020-10-13 15:42:17,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:17,811 INFO L479 AbstractCegarLoop]: Abstraction has 12066 states and 22638 transitions. [2020-10-13 15:42:17,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 15:42:17,811 INFO L276 IsEmpty]: Start isEmpty. Operand 12066 states and 22638 transitions. [2020-10-13 15:42:17,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 15:42:17,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:17,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:42:17,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:42:17,817 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:17,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:17,817 INFO L82 PathProgramCache]: Analyzing trace with hash -231643985, now seen corresponding path program 1 times [2020-10-13 15:42:17,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:17,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258199832] [2020-10-13 15:42:17,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:17,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:18,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:19,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:19,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 15:42:19,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:42:19,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1545 [2020-10-13 15:42:19,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:19,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 15:42:19,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 15:42:19,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 15:42:19,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:19,605 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 15:42:19,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:19,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:19,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:19,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:19,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:19,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:42:19,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:19,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:19,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:19,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:19,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:19,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 15:42:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:19,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:19,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:19,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 15:42:19,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:19,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 15:42:19,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:19,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:42:19,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:19,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:42:19,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:19,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:42:19,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258199832] [2020-10-13 15:42:19,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:19,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 15:42:19,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460917595] [2020-10-13 15:42:19,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 15:42:19,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:19,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 15:42:19,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-13 15:42:19,757 INFO L87 Difference]: Start difference. First operand 12066 states and 22638 transitions. Second operand 10 states. [2020-10-13 15:42:19,905 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 15:42:20,157 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 15:42:20,342 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-13 15:42:21,449 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 15:42:21,626 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-13 15:42:23,353 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 15:42:23,598 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 15:42:24,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:24,522 INFO L93 Difference]: Finished difference Result 26829 states and 52168 transitions. [2020-10-13 15:42:24,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 15:42:24,523 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2020-10-13 15:42:24,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:24,584 INFO L225 Difference]: With dead ends: 26829 [2020-10-13 15:42:24,585 INFO L226 Difference]: Without dead ends: 14781 [2020-10-13 15:42:24,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2020-10-13 15:42:24,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14781 states. [2020-10-13 15:42:25,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14781 to 12308. [2020-10-13 15:42:25,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12308 states. [2020-10-13 15:42:25,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12308 states to 12308 states and 21764 transitions. [2020-10-13 15:42:25,618 INFO L78 Accepts]: Start accepts. Automaton has 12308 states and 21764 transitions. Word has length 78 [2020-10-13 15:42:25,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:25,618 INFO L479 AbstractCegarLoop]: Abstraction has 12308 states and 21764 transitions. [2020-10-13 15:42:25,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 15:42:25,619 INFO L276 IsEmpty]: Start isEmpty. Operand 12308 states and 21764 transitions. [2020-10-13 15:42:25,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 15:42:25,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:25,625 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:42:25,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:42:25,626 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:25,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:25,626 INFO L82 PathProgramCache]: Analyzing trace with hash -193633650, now seen corresponding path program 1 times [2020-10-13 15:42:25,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:25,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948491114] [2020-10-13 15:42:25,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:25,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:25,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:25,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:25,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:25,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:26,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:26,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:27,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:27,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:28,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:28,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:28,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:28,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:29,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:29,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:29,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:29,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:30,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:30,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:30,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 15:42:30,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 15:42:30,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 15:42:30,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:30,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:42:30,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 15:42:30,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:42:30,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:30,771 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 15:42:30,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:30,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:30,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:30,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:30,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:30,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:42:30,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:30,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:30,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:30,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:30,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:30,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 15:42:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:30,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:30,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:30,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 15:42:30,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:30,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:42:30,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:30,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:30,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:30,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:30,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:30,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:42:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:30,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:30,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:30,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:42:30,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:30,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:42:30,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:30,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:30,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:30,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:30,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:30,991 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-13 15:42:30,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948491114] [2020-10-13 15:42:30,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:42:30,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 15:42:30,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213275241] [2020-10-13 15:42:30,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:42:30,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:30,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:42:30,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:42:30,993 INFO L87 Difference]: Start difference. First operand 12308 states and 21764 transitions. Second operand 6 states. [2020-10-13 15:42:31,374 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 15:42:33,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:33,589 INFO L93 Difference]: Finished difference Result 28751 states and 55727 transitions. [2020-10-13 15:42:33,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:42:33,590 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2020-10-13 15:42:33,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:33,670 INFO L225 Difference]: With dead ends: 28751 [2020-10-13 15:42:33,670 INFO L226 Difference]: Without dead ends: 16516 [2020-10-13 15:42:33,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:42:33,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16516 states. [2020-10-13 15:42:34,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16516 to 15681. [2020-10-13 15:42:34,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15681 states. [2020-10-13 15:42:35,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15681 states to 15681 states and 28008 transitions. [2020-10-13 15:42:35,047 INFO L78 Accepts]: Start accepts. Automaton has 15681 states and 28008 transitions. Word has length 90 [2020-10-13 15:42:35,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:35,048 INFO L479 AbstractCegarLoop]: Abstraction has 15681 states and 28008 transitions. [2020-10-13 15:42:35,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:42:35,048 INFO L276 IsEmpty]: Start isEmpty. Operand 15681 states and 28008 transitions. [2020-10-13 15:42:35,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:42:35,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:35,059 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:42:35,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:42:35,059 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:35,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:35,059 INFO L82 PathProgramCache]: Analyzing trace with hash -2036632242, now seen corresponding path program 1 times [2020-10-13 15:42:35,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:35,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267298475] [2020-10-13 15:42:35,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:35,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:35,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:35,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:35,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:35,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:35,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:36,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:36,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:37,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:39,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:39,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:39,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:40,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:40,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:40,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:42:40,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 15:42:40,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:42:40,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:40,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:42:40,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 15:42:40,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:42:40,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:40,215 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 15:42:40,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:40,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:40,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:40,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:40,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:40,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:42:40,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:40,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:40,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:40,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:40,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:40,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 15:42:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:40,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:40,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:40,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 15:42:40,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:40,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:42:40,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:40,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:40,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:40,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:40,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:40,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:42:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:40,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:40,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:40,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:42:40,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:40,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:42:40,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:40,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:40,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:40,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:40,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:40,427 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-13 15:42:40,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267298475] [2020-10-13 15:42:40,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:42:40,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 15:42:40,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36920088] [2020-10-13 15:42:40,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:42:40,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:40,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:42:40,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:42:40,429 INFO L87 Difference]: Start difference. First operand 15681 states and 28008 transitions. Second operand 6 states. [2020-10-13 15:42:40,794 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 15:42:41,518 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-13 15:42:42,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:42,913 INFO L93 Difference]: Finished difference Result 32003 states and 61930 transitions. [2020-10-13 15:42:42,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:42:42,914 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2020-10-13 15:42:42,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:42,988 INFO L225 Difference]: With dead ends: 32003 [2020-10-13 15:42:42,989 INFO L226 Difference]: Without dead ends: 16395 [2020-10-13 15:42:43,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:42:43,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16395 states. [2020-10-13 15:42:45,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16395 to 15577. [2020-10-13 15:42:45,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15577 states. [2020-10-13 15:42:45,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15577 states to 15577 states and 27461 transitions. [2020-10-13 15:42:45,830 INFO L78 Accepts]: Start accepts. Automaton has 15577 states and 27461 transitions. Word has length 94 [2020-10-13 15:42:45,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:45,830 INFO L479 AbstractCegarLoop]: Abstraction has 15577 states and 27461 transitions. [2020-10-13 15:42:45,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:42:45,831 INFO L276 IsEmpty]: Start isEmpty. Operand 15577 states and 27461 transitions. [2020-10-13 15:42:45,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 15:42:45,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:45,838 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:42:45,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 15:42:45,838 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:45,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:45,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1112689963, now seen corresponding path program 1 times [2020-10-13 15:42:45,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:45,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070015796] [2020-10-13 15:42:45,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:45,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:45,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:45,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:45,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:46,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:46,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:46,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:46,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:46,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:46,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:46,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:47,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:47,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:47,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:47,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:48,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:48,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:50,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:50,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 15:42:50,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 15:42:50,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:42:50,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:50,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:42:50,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-13 15:42:50,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:42:50,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:50,987 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 15:42:50,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:50,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:50,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:50,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:50,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:50,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:42:50,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:50,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:50,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:50,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:50,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:51,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 15:42:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:51,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:51,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:51,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 15:42:51,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:51,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:42:51,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:51,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:51,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:51,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:51,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:51,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:42:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:51,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:51,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:51,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:42:51,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:51,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:42:51,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:51,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:51,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:51,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:51,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:51,199 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 15:42:51,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070015796] [2020-10-13 15:42:51,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:42:51,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 15:42:51,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470873196] [2020-10-13 15:42:51,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:42:51,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:51,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:42:51,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:42:51,200 INFO L87 Difference]: Start difference. First operand 15577 states and 27461 transitions. Second operand 6 states. [2020-10-13 15:42:51,534 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 15:42:55,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:55,291 INFO L93 Difference]: Finished difference Result 33754 states and 66366 transitions. [2020-10-13 15:42:55,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:42:55,291 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2020-10-13 15:42:55,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:55,360 INFO L225 Difference]: With dead ends: 33754 [2020-10-13 15:42:55,360 INFO L226 Difference]: Without dead ends: 18250 [2020-10-13 15:42:55,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:42:55,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18250 states. [2020-10-13 15:42:56,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18250 to 17366. [2020-10-13 15:42:56,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17366 states. [2020-10-13 15:42:57,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17366 states to 17366 states and 31447 transitions. [2020-10-13 15:42:57,055 INFO L78 Accepts]: Start accepts. Automaton has 17366 states and 31447 transitions. Word has length 96 [2020-10-13 15:42:57,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:57,056 INFO L479 AbstractCegarLoop]: Abstraction has 17366 states and 31447 transitions. [2020-10-13 15:42:57,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:42:57,056 INFO L276 IsEmpty]: Start isEmpty. Operand 17366 states and 31447 transitions. [2020-10-13 15:42:57,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 15:42:57,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:57,062 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:42:57,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 15:42:57,062 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:57,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:57,063 INFO L82 PathProgramCache]: Analyzing trace with hash 645054231, now seen corresponding path program 1 times [2020-10-13 15:42:57,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:57,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831421828] [2020-10-13 15:42:57,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:57,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:57,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:57,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:57,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:57,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:57,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:57,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:57,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:59,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:02,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:02,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 15:43:02,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 15:43:02,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 15:43:02,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:02,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:43:02,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 15:43:02,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 15:43:02,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:02,220 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 15:43:02,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:43:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:02,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:02,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:02,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:43:02,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:02,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:43:02,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:02,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:43:02,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:43:02,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:43:02,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:02,344 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-13 15:43:02,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 15:43:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:02,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:02,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:02,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:02,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 15:43:02,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:43:02,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 15:43:02,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:02,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:43:02,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:43:02,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 15:43:02,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:02,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:43:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:02,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:02,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:02,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:43:02,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:02,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 15:43:02,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:02,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:43:02,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:43:02,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:43:02,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:02,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 15:43:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:02,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:02,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:02,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 15:43:02,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:02,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:43:02,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:02,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:43:02,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 15:43:02,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:43:02,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:02,602 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 15:43:02,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831421828] [2020-10-13 15:43:02,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:43:02,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 15:43:02,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241621429] [2020-10-13 15:43:02,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 15:43:02,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:43:02,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 15:43:02,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 15:43:02,604 INFO L87 Difference]: Start difference. First operand 17366 states and 31447 transitions. Second operand 9 states. [2020-10-13 15:43:02,741 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 15:43:02,943 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 15:43:08,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:43:08,204 INFO L93 Difference]: Finished difference Result 60960 states and 116568 transitions. [2020-10-13 15:43:08,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 15:43:08,205 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-13 15:43:08,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:43:08,348 INFO L225 Difference]: With dead ends: 60960 [2020-10-13 15:43:08,348 INFO L226 Difference]: Without dead ends: 43616 [2020-10-13 15:43:08,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-13 15:43:08,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43616 states. [2020-10-13 15:43:14,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43616 to 38719. [2020-10-13 15:43:14,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38719 states. [2020-10-13 15:43:14,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38719 states to 38719 states and 69178 transitions. [2020-10-13 15:43:14,721 INFO L78 Accepts]: Start accepts. Automaton has 38719 states and 69178 transitions. Word has length 103 [2020-10-13 15:43:14,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:43:14,722 INFO L479 AbstractCegarLoop]: Abstraction has 38719 states and 69178 transitions. [2020-10-13 15:43:14,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 15:43:14,722 INFO L276 IsEmpty]: Start isEmpty. Operand 38719 states and 69178 transitions. [2020-10-13 15:43:14,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 15:43:14,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:43:14,729 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:43:14,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 15:43:14,729 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:43:14,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:43:14,729 INFO L82 PathProgramCache]: Analyzing trace with hash -973920683, now seen corresponding path program 1 times [2020-10-13 15:43:14,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:43:14,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854932059] [2020-10-13 15:43:14,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:43:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:14,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:14,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:14,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:15,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:15,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:15,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:15,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:16,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:16,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:19,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:19,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 15:43:19,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 15:43:19,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:43:19,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:19,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:43:19,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:43:19,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:43:19,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:19,872 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 15:43:19,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:43:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:19,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:19,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:19,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:43:19,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:19,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:43:19,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:19,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:43:19,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:43:19,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:43:19,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:19,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 15:43:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:19,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:20,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:20,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 15:43:20,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:20,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:43:20,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:20,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:43:20,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 15:43:20,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:43:20,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:20,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:43:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:20,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:20,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:20,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:43:20,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:20,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:43:20,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:20,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:43:20,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:43:20,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:43:20,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:20,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 15:43:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:20,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:20,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:20,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 15:43:20,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:20,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:43:20,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:20,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:43:20,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 15:43:20,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:43:20,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:20,097 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:43:20,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854932059] [2020-10-13 15:43:20,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:43:20,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:43:20,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441141625] [2020-10-13 15:43:20,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:43:20,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:43:20,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:43:20,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:43:20,099 INFO L87 Difference]: Start difference. First operand 38719 states and 69178 transitions. Second operand 6 states. [2020-10-13 15:43:20,229 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 15:43:23,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:43:23,874 INFO L93 Difference]: Finished difference Result 69298 states and 124704 transitions. [2020-10-13 15:43:23,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:43:23,874 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-13 15:43:23,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:43:23,975 INFO L225 Difference]: With dead ends: 69298 [2020-10-13 15:43:23,975 INFO L226 Difference]: Without dead ends: 30601 [2020-10-13 15:43:24,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:43:24,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30601 states. [2020-10-13 15:43:26,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30601 to 29385. [2020-10-13 15:43:26,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29385 states. [2020-10-13 15:43:26,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29385 states to 29385 states and 54095 transitions. [2020-10-13 15:43:26,968 INFO L78 Accepts]: Start accepts. Automaton has 29385 states and 54095 transitions. Word has length 103 [2020-10-13 15:43:26,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:43:26,969 INFO L479 AbstractCegarLoop]: Abstraction has 29385 states and 54095 transitions. [2020-10-13 15:43:26,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:43:26,969 INFO L276 IsEmpty]: Start isEmpty. Operand 29385 states and 54095 transitions. [2020-10-13 15:43:26,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 15:43:26,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:43:26,977 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:43:26,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 15:43:26,977 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:43:26,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:43:26,977 INFO L82 PathProgramCache]: Analyzing trace with hash -505149220, now seen corresponding path program 1 times [2020-10-13 15:43:26,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:43:26,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418074713] [2020-10-13 15:43:26,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:43:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:27,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:27,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:27,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:27,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:27,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:27,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:27,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:27,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:30,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:30,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:30,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:30,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:31,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:31,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:32,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 15:43:32,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 15:43:32,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 15:43:32,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:32,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:43:32,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-13 15:43:32,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:43:32,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:32,125 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 15:43:32,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:43:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:32,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:32,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:32,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:43:32,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:32,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:43:32,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:32,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:43:32,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:43:32,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:43:32,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:32,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 15:43:32,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:32,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:32,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:32,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 15:43:32,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:32,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 15:43:32,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:32,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:43:32,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:43:32,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 15:43:32,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:32,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:43:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:32,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:32,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:32,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:43:32,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:32,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:43:32,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:32,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:43:32,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:43:32,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:43:32,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:32,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 15:43:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:32,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:32,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:32,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 15:43:32,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:32,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:43:32,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:32,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:43:32,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:43:32,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:43:32,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:32,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 15:43:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:32,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:32,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:32,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 15:43:32,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:32,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:43:32,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:32,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:43:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 15:43:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:43:32,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:32,435 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 15:43:32,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418074713] [2020-10-13 15:43:32,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:43:32,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 15:43:32,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544347038] [2020-10-13 15:43:32,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 15:43:32,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:43:32,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 15:43:32,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:43:32,438 INFO L87 Difference]: Start difference. First operand 29385 states and 54095 transitions. Second operand 7 states. [2020-10-13 15:43:32,750 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 15:43:39,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:43:39,645 INFO L93 Difference]: Finished difference Result 83836 states and 196501 transitions. [2020-10-13 15:43:39,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 15:43:39,645 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-13 15:43:39,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:43:39,897 INFO L225 Difference]: With dead ends: 83836 [2020-10-13 15:43:39,897 INFO L226 Difference]: Without dead ends: 54834 [2020-10-13 15:43:40,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-13 15:43:40,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54834 states. [2020-10-13 15:43:50,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54834 to 52035. [2020-10-13 15:43:50,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52035 states. [2020-10-13 15:43:51,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52035 states to 52035 states and 112548 transitions. [2020-10-13 15:43:51,348 INFO L78 Accepts]: Start accepts. Automaton has 52035 states and 112548 transitions. Word has length 119 [2020-10-13 15:43:51,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:43:51,349 INFO L479 AbstractCegarLoop]: Abstraction has 52035 states and 112548 transitions. [2020-10-13 15:43:51,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 15:43:51,349 INFO L276 IsEmpty]: Start isEmpty. Operand 52035 states and 112548 transitions. [2020-10-13 15:43:51,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 15:43:51,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:43:51,357 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:43:51,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 15:43:51,358 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:43:51,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:43:51,358 INFO L82 PathProgramCache]: Analyzing trace with hash -649470986, now seen corresponding path program 1 times [2020-10-13 15:43:51,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:43:51,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105247883] [2020-10-13 15:43:51,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:43:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:51,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:51,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:51,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:51,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:51,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:52,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:52,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:56,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:56,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 15:43:56,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:43:56,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:43:56,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:56,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:43:56,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-13 15:43:56,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:43:56,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:56,505 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 15:43:56,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:43:56,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:56,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:56,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:56,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:43:56,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:56,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:43:56,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:56,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:43:56,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:43:56,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:43:56,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:56,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 15:43:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:56,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:56,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:56,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:56,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 15:43:56,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:43:56,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 15:43:56,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:56,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:43:56,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:43:56,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 15:43:56,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:56,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:43:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:56,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:56,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:56,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:43:56,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:56,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:43:56,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:56,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:43:56,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:43:56,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:43:56,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:56,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 15:43:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:56,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:56,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:56,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 15:43:56,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:56,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:43:56,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:56,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:43:56,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:43:56,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:43:56,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:56,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 15:43:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:56,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:56,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:56,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 15:43:56,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:56,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:43:56,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:56,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:43:56,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 15:43:56,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:43:56,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:56,831 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 15:43:56,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105247883] [2020-10-13 15:43:56,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:43:56,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 15:43:56,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323100866] [2020-10-13 15:43:56,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 15:43:56,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:43:56,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 15:43:56,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:43:56,833 INFO L87 Difference]: Start difference. First operand 52035 states and 112548 transitions. Second operand 8 states. [2020-10-13 15:43:57,029 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 15:43:57,240 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 15:44:06,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:44:06,579 INFO L93 Difference]: Finished difference Result 110048 states and 259205 transitions. [2020-10-13 15:44:06,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 15:44:06,580 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 122 [2020-10-13 15:44:06,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:44:06,892 INFO L225 Difference]: With dead ends: 110048 [2020-10-13 15:44:06,893 INFO L226 Difference]: Without dead ends: 58187 [2020-10-13 15:44:08,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-13 15:44:08,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58187 states. [2020-10-13 15:44:19,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58187 to 51245. [2020-10-13 15:44:19,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51245 states. [2020-10-13 15:44:19,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51245 states to 51245 states and 109290 transitions. [2020-10-13 15:44:19,905 INFO L78 Accepts]: Start accepts. Automaton has 51245 states and 109290 transitions. Word has length 122 [2020-10-13 15:44:19,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:44:19,906 INFO L479 AbstractCegarLoop]: Abstraction has 51245 states and 109290 transitions. [2020-10-13 15:44:19,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 15:44:19,906 INFO L276 IsEmpty]: Start isEmpty. Operand 51245 states and 109290 transitions. [2020-10-13 15:44:19,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 15:44:19,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:44:19,913 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:44:19,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 15:44:19,913 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:44:19,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:44:19,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1458625455, now seen corresponding path program 1 times [2020-10-13 15:44:19,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:44:19,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767019373] [2020-10-13 15:44:19,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:44:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:44:19,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:19,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:20,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:20,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:20,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:20,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:20,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:24,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:44:24,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 15:44:24,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:44:24,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:44:24,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:44:24,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:44:24,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 15:44:24,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:44:24,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:44:25,079 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 15:44:25,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:44:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:44:25,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:25,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:44:25,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:44:25,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:44:25,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:44:25,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:44:25,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:44:25,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:44:25,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:44:25,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:44:25,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 15:44:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:44:25,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:25,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:44:25,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 15:44:25,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:44:25,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 15:44:25,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:44:25,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:44:25,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:44:25,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:44:25,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:44:25,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:44:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:44:25,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:25,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:44:25,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:44:25,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:44:25,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:44:25,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:44:25,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:44:25,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:44:25,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:44:25,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:44:25,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 15:44:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:44:25,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:25,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:44:25,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 15:44:25,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:44:25,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:44:25,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:44:25,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:44:25,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:44:25,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:44:25,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:44:25,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 15:44:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:44:25,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:25,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:44:25,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 15:44:25,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:44:25,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:44:25,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:44:25,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:44:25,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:44:25,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:44:25,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:44:25,364 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 15:44:25,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767019373] [2020-10-13 15:44:25,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:44:25,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 15:44:25,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351525449] [2020-10-13 15:44:25,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 15:44:25,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:44:25,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 15:44:25,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:44:25,365 INFO L87 Difference]: Start difference. First operand 51245 states and 109290 transitions. Second operand 7 states. [2020-10-13 15:44:25,500 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 15:44:25,820 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-13 15:44:32,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:44:32,620 INFO L93 Difference]: Finished difference Result 100996 states and 235269 transitions. [2020-10-13 15:44:32,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:44:32,620 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-10-13 15:44:32,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:44:32,889 INFO L225 Difference]: With dead ends: 100996 [2020-10-13 15:44:32,889 INFO L226 Difference]: Without dead ends: 50039 [2020-10-13 15:44:34,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-13 15:44:34,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50039 states. [2020-10-13 15:44:42,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50039 to 48634. [2020-10-13 15:44:42,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48634 states. [2020-10-13 15:44:43,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48634 states to 48634 states and 97997 transitions. [2020-10-13 15:44:43,587 INFO L78 Accepts]: Start accepts. Automaton has 48634 states and 97997 transitions. Word has length 115 [2020-10-13 15:44:43,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:44:43,588 INFO L479 AbstractCegarLoop]: Abstraction has 48634 states and 97997 transitions. [2020-10-13 15:44:43,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 15:44:43,588 INFO L276 IsEmpty]: Start isEmpty. Operand 48634 states and 97997 transitions. [2020-10-13 15:44:43,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 15:44:43,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:44:43,593 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:44:43,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 15:44:43,593 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:44:43,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:44:43,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1531650601, now seen corresponding path program 1 times [2020-10-13 15:44:43,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:44:43,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536111668] [2020-10-13 15:44:43,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:44:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:44:43,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:43,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:43,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:43,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:44,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:46,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:47,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:48,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:44:48,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 15:44:48,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:44:48,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 15:44:48,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:44:48,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 15:44:48,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:44:48,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 15:44:48,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:44:48,807 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 15:44:48,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:44:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:44:48,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:48,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:44:48,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:44:48,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:44:48,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:44:48,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:44:48,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:44:48,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:44:48,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:44:48,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:44:48,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 15:44:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:44:48,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:49,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:44:49,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 15:44:49,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:44:49,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 15:44:49,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:44:49,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:44:49,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:44:49,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 15:44:49,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:44:49,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:44:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:44:49,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:49,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:44:49,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:44:49,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:44:49,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 15:44:49,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:44:49,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 15:44:49,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:44:49,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:44:49,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:44:49,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 15:44:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:44:49,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:49,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:44:49,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 15:44:49,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:44:49,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:44:49,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:44:49,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:44:49,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:44:49,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:44:49,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:44:49,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 15:44:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:44:49,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:44:49,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:44:49,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 15:44:49,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:44:49,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:44:49,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:44:49,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:44:49,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 15:44:49,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:44:49,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:44:49,211 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 15:44:49,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536111668] [2020-10-13 15:44:49,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:44:49,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 15:44:49,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218803672] [2020-10-13 15:44:49,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 15:44:49,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:44:49,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 15:44:49,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-13 15:44:49,213 INFO L87 Difference]: Start difference. First operand 48634 states and 97997 transitions. Second operand 9 states. [2020-10-13 15:44:49,344 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 132