/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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 language data_model -i ../../../trunk/examples/svcomp/reducercommutativity/max40-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:14:00,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:14:00,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:14:00,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:14:00,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:14:00,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:14:00,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:14:00,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:14:00,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:14:00,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:14:00,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:14:00,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:14:00,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:14:00,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:14:00,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:14:00,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:14:00,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:14:00,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:14:00,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:14:00,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:14:00,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:14:00,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:14:00,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:14:00,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:14:00,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:14:00,632 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:14:00,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:14:00,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:14:00,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:14:00,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:14:00,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:14:00,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:14:00,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:14:00,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:14:00,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:14:00,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:14:00,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:14:00,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:14:00,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:14:00,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:14:00,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:14:00,646 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 [2020-10-29 12:14:00,709 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:14:00,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:14:00,711 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:14:00,711 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:14:00,712 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:14:00,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:14:00,712 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:14:00,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:14:00,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:14:00,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:14:00,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:14:00,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:14:00,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:14:00,714 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:14:00,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:14:00,714 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:14:00,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:14:00,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:14:00,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:14:00,715 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:14:00,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:14:00,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:14:00,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:14:00,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:14:00,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:14:00,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:14:00,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:14:00,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:14:00,717 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:14:00,718 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:14:01,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:14:01,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:14:01,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:14:01,193 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:14:01,194 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:14:01,197 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max40-1.i [2020-10-29 12:14:01,285 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17feecd27/8f0050e96a6b430cabe1f3fd9999c1d2/FLAG333249231 [2020-10-29 12:14:01,919 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:14:01,919 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/max40-1.i [2020-10-29 12:14:01,927 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17feecd27/8f0050e96a6b430cabe1f3fd9999c1d2/FLAG333249231 [2020-10-29 12:14:02,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17feecd27/8f0050e96a6b430cabe1f3fd9999c1d2 [2020-10-29 12:14:02,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:14:02,291 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:14:02,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:14:02,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:14:02,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:14:02,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:14:02" (1/1) ... [2020-10-29 12:14:02,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ddc5653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:14:02, skipping insertion in model container [2020-10-29 12:14:02,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:14:02" (1/1) ... [2020-10-29 12:14:02,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:14:02,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:14:02,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:14:02,534 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:14:02,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:14:02,598 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:14:02,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:14:02 WrapperNode [2020-10-29 12:14:02,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:14:02,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:14:02,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:14:02,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:14:02,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:14:02" (1/1) ... [2020-10-29 12:14:02,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:14:02" (1/1) ... [2020-10-29 12:14:02,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:14:02" (1/1) ... [2020-10-29 12:14:02,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:14:02" (1/1) ... [2020-10-29 12:14:02,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:14:02" (1/1) ... [2020-10-29 12:14:02,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:14:02" (1/1) ... [2020-10-29 12:14:02,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:14:02" (1/1) ... [2020-10-29 12:14:02,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:14:02,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:14:02,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:14:02,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:14:02,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:14:02" (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 [2020-10-29 12:14:02,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:14:02,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:14:02,741 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:14:02,741 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2020-10-29 12:14:02,741 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:14:02,742 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:14:02,742 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:14:02,742 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 12:14:02,742 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 12:14:02,742 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:14:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:14:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 12:14:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure max [2020-10-29 12:14:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:14:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:14:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:14:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:14:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:14:02,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:14:02,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:14:03,291 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:14:03,291 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 12:14:03,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:14:03 BoogieIcfgContainer [2020-10-29 12:14:03,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:14:03,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:14:03,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:14:03,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:14:03,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:14:02" (1/3) ... [2020-10-29 12:14:03,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f01c44b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:14:03, skipping insertion in model container [2020-10-29 12:14:03,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:14:02" (2/3) ... [2020-10-29 12:14:03,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f01c44b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:14:03, skipping insertion in model container [2020-10-29 12:14:03,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:14:03" (3/3) ... [2020-10-29 12:14:03,312 INFO L111 eAbstractionObserver]: Analyzing ICFG max40-1.i [2020-10-29 12:14:03,333 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:14:03,339 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:14:03,356 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:14:03,399 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:14:03,399 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:14:03,400 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:14:03,400 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:14:03,400 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:14:03,400 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:14:03,400 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:14:03,400 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:14:03,426 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-29 12:14:03,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 12:14:03,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:03,436 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:03,437 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:03,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:03,448 INFO L82 PathProgramCache]: Analyzing trace with hash -122162658, now seen corresponding path program 1 times [2020-10-29 12:14:03,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:03,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922796041] [2020-10-29 12:14:03,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:03,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:03,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:03,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:03,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:04,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:04,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:05,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:05,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:14:05,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:14:05,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1886 [2020-10-29 12:14:05,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:05,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:05,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:14:05,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:14:05,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:14:05,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:14:05,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:05,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:05,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:05,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:05,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:05,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:05,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:14:05,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:05,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:05,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:05,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:05,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:05,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:05,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:14:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:05,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:05,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:05,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:05,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:14:05,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:05,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 12:14:05,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:05,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:05,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:14:05,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:05,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:14:05,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:05,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 12:14:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:05,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:05,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:06,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:06,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:14:06,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:06,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 12:14:06,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:06,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:06,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:14:06,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:06,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:14:06,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:06,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:14:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:06,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:06,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:06,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:06,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:14:06,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:06,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 12:14:06,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:06,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:14:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:14:06,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:06,089 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 12:14:06,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922796041] [2020-10-29 12:14:06,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:14:06,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:14:06,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164207900] [2020-10-29 12:14:06,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:14:06,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:06,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:14:06,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:14:06,118 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 11 states. [2020-10-29 12:14:06,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:06,593 INFO L93 Difference]: Finished difference Result 93 states and 138 transitions. [2020-10-29 12:14:06,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 12:14:06,596 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-10-29 12:14:06,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:06,614 INFO L225 Difference]: With dead ends: 93 [2020-10-29 12:14:06,614 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 12:14:06,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:14:06,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 12:14:06,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 41. [2020-10-29 12:14:06,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 12:14:06,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2020-10-29 12:14:06,716 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 34 [2020-10-29 12:14:06,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:06,716 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2020-10-29 12:14:06,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:14:06,717 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2020-10-29 12:14:06,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 12:14:06,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:06,722 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:06,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:14:06,723 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:06,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:06,724 INFO L82 PathProgramCache]: Analyzing trace with hash 76835244, now seen corresponding path program 1 times [2020-10-29 12:14:06,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:06,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879075919] [2020-10-29 12:14:06,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:06,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:06,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:06,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:06,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:06,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:08,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:08,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 12:14:08,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:14:08,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1647 [2020-10-29 12:14:08,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:08,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:08,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:14:08,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:14:08,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:14:08,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:08,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:08,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:08,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:08,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:08,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:08,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:14:08,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:08,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:08,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:08,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:08,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:08,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:08,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:14:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:08,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:08,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:08,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:14:08,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:08,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:14:08,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:08,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:08,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:14:08,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:08,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:14:08,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:08,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 12:14:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:08,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:08,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:08,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:08,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:14:08,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:08,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:14:08,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:08,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:08,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:14:08,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:08,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:14:08,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:08,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 12:14:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:08,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:08,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:08,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:08,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:14:08,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:08,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:14:08,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:08,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:08,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:14:08,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:08,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:14:08,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:08,546 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 12:14:08,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879075919] [2020-10-29 12:14:08,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:08,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 12:14:08,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755206815] [2020-10-29 12:14:08,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:14:08,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:08,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:14:08,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:14:08,553 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand 5 states. [2020-10-29 12:14:08,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:08,727 INFO L93 Difference]: Finished difference Result 70 states and 94 transitions. [2020-10-29 12:14:08,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:14:08,728 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-10-29 12:14:08,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:08,729 INFO L225 Difference]: With dead ends: 70 [2020-10-29 12:14:08,729 INFO L226 Difference]: Without dead ends: 38 [2020-10-29 12:14:08,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:14:08,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-29 12:14:08,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2020-10-29 12:14:08,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-29 12:14:08,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-10-29 12:14:08,749 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 38 [2020-10-29 12:14:08,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:08,750 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-10-29 12:14:08,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:14:08,752 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-10-29 12:14:08,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 12:14:08,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:08,754 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:08,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:14:08,755 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:08,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:08,759 INFO L82 PathProgramCache]: Analyzing trace with hash 2055205671, now seen corresponding path program 2 times [2020-10-29 12:14:08,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:08,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179344880] [2020-10-29 12:14:08,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:08,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:08,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:08,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:08,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:08,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:10,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:13,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:13,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 12:14:13,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:14:13,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 12:14:13,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:13,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:13,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:14:13,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:14:13,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 12:14:13,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:13,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:13,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:13,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:13,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:13,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:13,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:14:13,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:13,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:13,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:13,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:13,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:13,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:13,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:14:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:13,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:13,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:14,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:14,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 12:14:14,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:14,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-29 12:14:14,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:14,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:14,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:14:14,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:14,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:14:14,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:14,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 12:14:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:14,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:14,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:14,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:14,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:14,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 12:14:14,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:14:14,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-29 12:14:14,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:14,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:14,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:14:14,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:14,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:14:14,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:14,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:14:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:14,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:14,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:14,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:14,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 12:14:14,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:14,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-29 12:14:14,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:14,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:14,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:14:14,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:14,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:14:14,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:14,910 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 24 proven. 51 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 12:14:14,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179344880] [2020-10-29 12:14:14,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:14,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 12:14:14,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178806975] [2020-10-29 12:14:14,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:14:14,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:14,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:14:14,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:14:14,916 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 14 states. [2020-10-29 12:14:16,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:16,189 INFO L93 Difference]: Finished difference Result 98 states and 122 transitions. [2020-10-29 12:14:16,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:14:16,189 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2020-10-29 12:14:16,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:16,191 INFO L225 Difference]: With dead ends: 98 [2020-10-29 12:14:16,191 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 12:14:16,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2020-10-29 12:14:16,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 12:14:16,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2020-10-29 12:14:16,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-29 12:14:16,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 83 transitions. [2020-10-29 12:14:16,206 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 83 transitions. Word has length 58 [2020-10-29 12:14:16,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:16,206 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 83 transitions. [2020-10-29 12:14:16,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:14:16,207 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 83 transitions. [2020-10-29 12:14:16,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 12:14:16,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:16,210 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:16,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:14:16,210 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:16,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:16,211 INFO L82 PathProgramCache]: Analyzing trace with hash -595392793, now seen corresponding path program 1 times [2020-10-29 12:14:16,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:16,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545874725] [2020-10-29 12:14:16,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:16,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:16,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:16,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:16,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:16,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:21,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:21,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 12:14:21,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:14:21,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 12:14:21,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:21,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:21,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:14:21,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-29 12:14:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:14:21,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:21,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:21,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:21,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:21,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:21,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:21,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:14:21,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:21,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:21,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:21,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:21,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:21,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:21,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:14:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:21,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:21,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:21,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:21,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 12:14:21,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:21,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 12:14:21,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:21,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:21,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:14:21,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:21,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:14:21,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:21,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 12:14:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:21,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:21,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:21,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:21,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 12:14:21,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:21,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 12:14:21,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:21,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:21,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:14:21,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:21,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:14:21,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:21,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:14:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:21,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:21,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:21,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 12:14:21,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:21,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 12:14:21,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:21,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:21,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:14:21,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:21,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:14:21,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:21,437 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 18 proven. 36 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-29 12:14:21,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545874725] [2020-10-29 12:14:21,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:21,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 12:14:21,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951766267] [2020-10-29 12:14:21,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:14:21,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:21,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:14:21,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:14:21,440 INFO L87 Difference]: Start difference. First operand 66 states and 83 transitions. Second operand 6 states. [2020-10-29 12:14:21,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:21,614 INFO L93 Difference]: Finished difference Result 137 states and 183 transitions. [2020-10-29 12:14:21,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:14:21,614 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-29 12:14:21,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:21,617 INFO L225 Difference]: With dead ends: 137 [2020-10-29 12:14:21,617 INFO L226 Difference]: Without dead ends: 80 [2020-10-29 12:14:21,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:14:21,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-29 12:14:21,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 74. [2020-10-29 12:14:21,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-29 12:14:21,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2020-10-29 12:14:21,634 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 58 [2020-10-29 12:14:21,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:21,634 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2020-10-29 12:14:21,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:14:21,634 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2020-10-29 12:14:21,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 12:14:21,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:21,637 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:21,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:14:21,637 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:21,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:21,638 INFO L82 PathProgramCache]: Analyzing trace with hash 2060222850, now seen corresponding path program 2 times [2020-10-29 12:14:21,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:21,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328500810] [2020-10-29 12:14:21,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:21,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:21,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:21,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:21,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:22,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:23,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:26,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:26,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 12:14:26,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:14:26,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 12:14:26,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:26,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:26,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:14:26,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 12:14:26,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:14:26,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:26,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:26,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:26,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:26,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:26,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:26,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:14:26,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:26,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:26,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:26,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:26,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:26,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:26,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:14:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:26,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:26,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:26,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:26,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:14:26,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:26,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 12:14:26,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:26,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:26,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:14:26,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:26,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:14:26,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:26,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 12:14:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:26,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:26,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:26,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:14:26,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:26,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 12:14:26,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:26,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:26,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:14:26,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:26,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:14:26,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:26,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:14:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:26,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:26,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:26,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:26,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:14:26,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:26,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 12:14:26,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:26,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:26,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:14:26,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:26,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:14:26,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:27,021 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 45 proven. 90 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-29 12:14:27,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328500810] [2020-10-29 12:14:27,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:27,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 12:14:27,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505556712] [2020-10-29 12:14:27,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 12:14:27,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:27,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 12:14:27,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:14:27,027 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand 7 states. [2020-10-29 12:14:27,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:27,268 INFO L93 Difference]: Finished difference Result 153 states and 203 transitions. [2020-10-29 12:14:27,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 12:14:27,268 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-10-29 12:14:27,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:27,272 INFO L225 Difference]: With dead ends: 153 [2020-10-29 12:14:27,273 INFO L226 Difference]: Without dead ends: 88 [2020-10-29 12:14:27,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:14:27,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-29 12:14:27,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 82. [2020-10-29 12:14:27,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-29 12:14:27,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 103 transitions. [2020-10-29 12:14:27,302 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 103 transitions. Word has length 70 [2020-10-29 12:14:27,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:27,303 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 103 transitions. [2020-10-29 12:14:27,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 12:14:27,303 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 103 transitions. [2020-10-29 12:14:27,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 12:14:27,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:27,312 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 10, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:27,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:14:27,313 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:27,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:27,314 INFO L82 PathProgramCache]: Analyzing trace with hash 538831773, now seen corresponding path program 3 times [2020-10-29 12:14:27,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:27,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968391670] [2020-10-29 12:14:27,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:27,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:27,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:27,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:27,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:29,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:29,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:31,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:32,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:32,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 12:14:32,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:14:32,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 12:14:32,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:32,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:32,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 12:14:32,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-29 12:14:32,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 12:14:32,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:32,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:32,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:32,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:32,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:32,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:32,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:14:32,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:32,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:32,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:32,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:32,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:32,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:32,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:14:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:32,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:32,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:32,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:32,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:14:32,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:32,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-29 12:14:32,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:32,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:32,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:14:32,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:32,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:14:32,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:32,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 12:14:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:32,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:32,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:32,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:32,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:14:32,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:32,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-29 12:14:32,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:32,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:32,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:14:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:14:32,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:32,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 12:14:32,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:32,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:32,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:33,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:33,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:14:33,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:33,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-29 12:14:33,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:33,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:33,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:14:33,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:33,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:14:33,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:33,115 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 84 proven. 168 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-29 12:14:33,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968391670] [2020-10-29 12:14:33,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:33,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 12:14:33,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136810513] [2020-10-29 12:14:33,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:14:33,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:33,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:14:33,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:14:33,120 INFO L87 Difference]: Start difference. First operand 82 states and 103 transitions. Second operand 11 states. [2020-10-29 12:14:33,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:33,443 INFO L93 Difference]: Finished difference Result 169 states and 223 transitions. [2020-10-29 12:14:33,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:14:33,444 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2020-10-29 12:14:33,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:33,446 INFO L225 Difference]: With dead ends: 169 [2020-10-29 12:14:33,446 INFO L226 Difference]: Without dead ends: 96 [2020-10-29 12:14:33,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:14:33,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-29 12:14:33,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2020-10-29 12:14:33,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-29 12:14:33,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 113 transitions. [2020-10-29 12:14:33,461 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 113 transitions. Word has length 82 [2020-10-29 12:14:33,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:33,461 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 113 transitions. [2020-10-29 12:14:33,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:14:33,461 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 113 transitions. [2020-10-29 12:14:33,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 12:14:33,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:33,463 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 13, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:33,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:14:33,463 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:33,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:33,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1308034360, now seen corresponding path program 4 times [2020-10-29 12:14:33,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:33,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604609638] [2020-10-29 12:14:33,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:33,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:33,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:33,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:33,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:36,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:37,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:38,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:38,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 12:14:38,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:14:38,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 12:14:38,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:38,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:38,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:14:38,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:14:38,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:14:38,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:38,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:38,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:38,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:38,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:38,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:38,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:14:38,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:38,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:38,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:38,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:38,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:38,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:38,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:14:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:38,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:38,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:38,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:38,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:38,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 12:14:38,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:38,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:38,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:14:38,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:38,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:14:38,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:38,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 12:14:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:38,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:38,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:38,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:38,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:38,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:38,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 12:14:38,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:38,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:38,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:14:38,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:38,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:14:38,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:38,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 12:14:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:38,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:38,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:38,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:38,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:14:38,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:38,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 12:14:38,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:38,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:38,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:14:38,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:38,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:14:38,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:38,869 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 135 proven. 270 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 12:14:38,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604609638] [2020-10-29 12:14:38,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:38,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 12:14:38,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154819937] [2020-10-29 12:14:38,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:14:38,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:38,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:14:38,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:14:38,872 INFO L87 Difference]: Start difference. First operand 90 states and 113 transitions. Second operand 9 states. [2020-10-29 12:14:39,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:39,274 INFO L93 Difference]: Finished difference Result 185 states and 243 transitions. [2020-10-29 12:14:39,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 12:14:39,276 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-10-29 12:14:39,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:39,279 INFO L225 Difference]: With dead ends: 185 [2020-10-29 12:14:39,279 INFO L226 Difference]: Without dead ends: 104 [2020-10-29 12:14:39,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:14:39,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-29 12:14:39,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 98. [2020-10-29 12:14:39,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-29 12:14:39,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 123 transitions. [2020-10-29 12:14:39,304 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 123 transitions. Word has length 94 [2020-10-29 12:14:39,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:39,304 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 123 transitions. [2020-10-29 12:14:39,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:14:39,304 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 123 transitions. [2020-10-29 12:14:39,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 12:14:39,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:39,306 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:39,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:14:39,310 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:39,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:39,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1001885267, now seen corresponding path program 5 times [2020-10-29 12:14:39,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:39,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424882045] [2020-10-29 12:14:39,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:39,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:39,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:39,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:39,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:44,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:44,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 12:14:44,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:14:44,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 12:14:44,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:44,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:44,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:14:44,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-29 12:14:44,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:14:44,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:44,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:44,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:44,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:44,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:44,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:44,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:14:44,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:44,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:44,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:44,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:44,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:44,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:44,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:14:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:44,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:44,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:44,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:44,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 12:14:44,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:44,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 12:14:44,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:44,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:44,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:14:44,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:44,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:14:44,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:44,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 12:14:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:44,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:44,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:44,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 12:14:44,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:44,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 12:14:44,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:44,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:44,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:14:44,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:44,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:14:44,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:44,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 12:14:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:44,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:44,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:44,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:44,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 12:14:44,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:44,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 12:14:44,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:44,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:44,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:14:44,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:44,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:14:44,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:44,808 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 198 proven. 396 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-29 12:14:44,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424882045] [2020-10-29 12:14:44,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:44,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 12:14:44,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275212339] [2020-10-29 12:14:44,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:14:44,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:44,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:14:44,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:14:44,811 INFO L87 Difference]: Start difference. First operand 98 states and 123 transitions. Second operand 10 states. [2020-10-29 12:14:45,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:45,262 INFO L93 Difference]: Finished difference Result 201 states and 263 transitions. [2020-10-29 12:14:45,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 12:14:45,264 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 106 [2020-10-29 12:14:45,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:45,266 INFO L225 Difference]: With dead ends: 201 [2020-10-29 12:14:45,266 INFO L226 Difference]: Without dead ends: 112 [2020-10-29 12:14:45,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:14:45,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-29 12:14:45,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 106. [2020-10-29 12:14:45,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-29 12:14:45,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 133 transitions. [2020-10-29 12:14:45,295 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 133 transitions. Word has length 106 [2020-10-29 12:14:45,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:45,296 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 133 transitions. [2020-10-29 12:14:45,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:14:45,296 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 133 transitions. [2020-10-29 12:14:45,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-29 12:14:45,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:45,297 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 19, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:45,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:14:45,298 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:45,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:45,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1184843502, now seen corresponding path program 6 times [2020-10-29 12:14:45,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:45,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16463761] [2020-10-29 12:14:45,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:45,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:45,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:45,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:45,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:50,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:50,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 12:14:50,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:14:50,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 12:14:50,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:50,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:50,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:14:50,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:14:50,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 12:14:50,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:50,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:50,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:50,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:50,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:50,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:50,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:50,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:14:50,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:50,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:50,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:50,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:50,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:50,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:50,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:14:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:50,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:50,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:50,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 12:14:50,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:50,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 12:14:50,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:50,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:50,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:14:50,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:50,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 12:14:50,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:50,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 12:14:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:50,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:50,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:50,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:50,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 12:14:50,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:50,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-29 12:14:50,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:50,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:50,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:14:50,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:50,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 12:14:50,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:50,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 12:14:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:50,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:50,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:50,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:50,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 12:14:50,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:50,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 12:14:50,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:50,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:50,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:14:50,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:50,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 12:14:50,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:50,897 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 273 proven. 546 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-29 12:14:50,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16463761] [2020-10-29 12:14:50,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:50,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 12:14:50,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555896822] [2020-10-29 12:14:50,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:14:50,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:50,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:14:50,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:14:50,900 INFO L87 Difference]: Start difference. First operand 106 states and 133 transitions. Second operand 11 states. [2020-10-29 12:14:51,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:51,381 INFO L93 Difference]: Finished difference Result 217 states and 283 transitions. [2020-10-29 12:14:51,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 12:14:51,384 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 118 [2020-10-29 12:14:51,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:51,386 INFO L225 Difference]: With dead ends: 217 [2020-10-29 12:14:51,386 INFO L226 Difference]: Without dead ends: 120 [2020-10-29 12:14:51,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:14:51,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-29 12:14:51,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 114. [2020-10-29 12:14:51,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-29 12:14:51,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 143 transitions. [2020-10-29 12:14:51,399 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 143 transitions. Word has length 118 [2020-10-29 12:14:51,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:51,400 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 143 transitions. [2020-10-29 12:14:51,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:14:51,400 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 143 transitions. [2020-10-29 12:14:51,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-29 12:14:51,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:51,402 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 22, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:51,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:14:51,403 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:51,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:51,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1640886025, now seen corresponding path program 7 times [2020-10-29 12:14:51,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:51,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394931291] [2020-10-29 12:14:51,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:51,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:51,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:51,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:51,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:56,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:56,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 12:14:56,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:14:56,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 12:14:56,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:56,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:56,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:14:56,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:14:56,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 12:14:56,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:56,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:14:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:56,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:56,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:56,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:14:56,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:56,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:14:56,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:56,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:56,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:14:56,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:14:56,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:14:56,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:56,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:14:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:56,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:56,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:56,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 12:14:56,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:14:56,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-29 12:14:56,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:56,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:56,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:14:56,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:56,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 12:14:56,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:14:56,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 12:14:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:56,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:56,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:56,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:56,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 12:14:56,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:56,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-29 12:14:56,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:56,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:56,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:14:56,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:56,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 12:14:56,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:56,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 12:14:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:56,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:56,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:57,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:14:57,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 12:14:57,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:14:57,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-29 12:14:57,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:14:57,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:14:57,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:14:57,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:14:57,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 12:14:57,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:14:57,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 360 proven. 720 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-29 12:14:57,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394931291] [2020-10-29 12:14:57,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:14:57,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 12:14:57,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574510827] [2020-10-29 12:14:57,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:14:57,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:14:57,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:14:57,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:14:57,253 INFO L87 Difference]: Start difference. First operand 114 states and 143 transitions. Second operand 12 states. [2020-10-29 12:14:57,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:14:57,804 INFO L93 Difference]: Finished difference Result 233 states and 303 transitions. [2020-10-29 12:14:57,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 12:14:57,805 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-10-29 12:14:57,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:14:57,806 INFO L225 Difference]: With dead ends: 233 [2020-10-29 12:14:57,806 INFO L226 Difference]: Without dead ends: 128 [2020-10-29 12:14:57,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-29 12:14:57,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-29 12:14:57,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 122. [2020-10-29 12:14:57,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-29 12:14:57,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 153 transitions. [2020-10-29 12:14:57,830 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 153 transitions. Word has length 130 [2020-10-29 12:14:57,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:14:57,831 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 153 transitions. [2020-10-29 12:14:57,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:14:57,831 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 153 transitions. [2020-10-29 12:14:57,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-29 12:14:57,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:14:57,834 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 25, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:14:57,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:14:57,834 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:14:57,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:14:57,835 INFO L82 PathProgramCache]: Analyzing trace with hash -2042411356, now seen corresponding path program 8 times [2020-10-29 12:14:57,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:14:57,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434927611] [2020-10-29 12:14:57,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:14:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:14:57,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:57,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:57,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:14:57,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:02,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:02,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 12:15:02,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:15:02,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 12:15:02,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:02,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:02,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:15:02,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:15:02,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:15:02,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:02,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:02,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:02,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:02,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:02,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:02,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:15:02,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:02,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:02,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:02,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:02,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:02,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:02,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:15:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:02,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:03,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:03,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 12:15:03,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:03,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-29 12:15:03,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:03,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:03,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:15:03,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:03,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:15:03,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:03,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 12:15:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:03,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:03,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:03,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:03,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 12:15:03,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:03,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-29 12:15:03,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:03,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:03,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:15:03,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:03,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:15:03,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:03,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 12:15:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:03,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:03,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:03,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:03,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 12:15:03,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:03,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-29 12:15:03,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:03,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:03,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:15:03,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:03,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:15:03,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:03,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 459 proven. 918 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-29 12:15:03,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434927611] [2020-10-29 12:15:03,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:03,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 12:15:03,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215383051] [2020-10-29 12:15:03,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:15:03,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:03,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:15:03,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:15:03,688 INFO L87 Difference]: Start difference. First operand 122 states and 153 transitions. Second operand 13 states. [2020-10-29 12:15:04,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:04,301 INFO L93 Difference]: Finished difference Result 249 states and 323 transitions. [2020-10-29 12:15:04,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 12:15:04,301 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 142 [2020-10-29 12:15:04,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:04,303 INFO L225 Difference]: With dead ends: 249 [2020-10-29 12:15:04,304 INFO L226 Difference]: Without dead ends: 136 [2020-10-29 12:15:04,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:15:04,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-29 12:15:04,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 130. [2020-10-29 12:15:04,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-29 12:15:04,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 163 transitions. [2020-10-29 12:15:04,320 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 163 transitions. Word has length 142 [2020-10-29 12:15:04,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:04,322 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 163 transitions. [2020-10-29 12:15:04,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:15:04,322 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 163 transitions. [2020-10-29 12:15:04,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-29 12:15:04,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:04,326 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 28, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:04,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:15:04,327 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:04,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:04,327 INFO L82 PathProgramCache]: Analyzing trace with hash 585043391, now seen corresponding path program 9 times [2020-10-29 12:15:04,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:04,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619005841] [2020-10-29 12:15:04,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:04,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:04,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:04,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:04,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:09,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:09,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 12:15:09,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:15:09,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-29 12:15:09,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:09,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:09,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:15:09,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:15:09,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 12:15:09,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:09,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:09,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:09,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:09,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:09,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:09,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:15:09,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:09,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:09,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:09,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:09,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:09,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:09,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:15:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:09,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:09,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:09,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:09,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:09,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-29 12:15:09,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:09,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:09,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:15:09,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:09,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 12:15:09,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:09,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:15:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:09,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:09,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:09,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:09,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:09,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:09,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-29 12:15:09,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:09,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:09,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:15:09,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:09,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 12:15:09,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:09,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 12:15:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:09,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:09,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:10,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:10,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:15:10,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:10,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-29 12:15:10,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:10,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:10,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:15:10,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:10,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 12:15:10,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:10,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1845 backedges. 570 proven. 1140 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-29 12:15:10,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619005841] [2020-10-29 12:15:10,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:10,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 12:15:10,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601165369] [2020-10-29 12:15:10,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:15:10,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:10,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:15:10,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:15:10,167 INFO L87 Difference]: Start difference. First operand 130 states and 163 transitions. Second operand 14 states. [2020-10-29 12:15:10,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:10,777 INFO L93 Difference]: Finished difference Result 265 states and 343 transitions. [2020-10-29 12:15:10,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:15:10,780 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 154 [2020-10-29 12:15:10,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:10,783 INFO L225 Difference]: With dead ends: 265 [2020-10-29 12:15:10,783 INFO L226 Difference]: Without dead ends: 144 [2020-10-29 12:15:10,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-29 12:15:10,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-29 12:15:10,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 138. [2020-10-29 12:15:10,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-29 12:15:10,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 173 transitions. [2020-10-29 12:15:10,802 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 173 transitions. Word has length 154 [2020-10-29 12:15:10,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:10,802 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 173 transitions. [2020-10-29 12:15:10,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:15:10,802 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 173 transitions. [2020-10-29 12:15:10,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-29 12:15:10,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:10,805 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 31, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:10,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 12:15:10,806 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:10,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:10,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1939798950, now seen corresponding path program 10 times [2020-10-29 12:15:10,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:10,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739729132] [2020-10-29 12:15:10,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:10,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:10,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:10,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:10,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:15,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:15,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 12:15:15,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:15:15,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 12:15:15,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:15,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:15,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:15:15,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 12:15:15,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 12:15:15,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:15,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:15,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:15,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:15,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:15,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:15,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:15:15,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:15,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:15,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:15,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:15,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:15,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:15,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:15:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:15,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:15,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:16,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:16,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 12:15:16,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:16,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-29 12:15:16,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:16,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:16,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:15:16,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:16,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 12:15:16,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:16,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 12:15:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:16,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:16,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:16,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 12:15:16,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:16,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-29 12:15:16,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:16,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:16,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:15:16,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:16,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 12:15:16,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:16,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 12:15:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:16,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:16,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:16,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:16,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 12:15:16,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:16,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-29 12:15:16,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:16,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:16,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:15:16,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:16,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 12:15:16,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:16,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2226 backedges. 693 proven. 1386 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-29 12:15:16,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739729132] [2020-10-29 12:15:16,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:16,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 12:15:16,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022428552] [2020-10-29 12:15:16,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 12:15:16,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:16,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 12:15:16,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:15:16,711 INFO L87 Difference]: Start difference. First operand 138 states and 173 transitions. Second operand 15 states. [2020-10-29 12:15:17,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:17,416 INFO L93 Difference]: Finished difference Result 281 states and 363 transitions. [2020-10-29 12:15:17,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 12:15:17,417 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 166 [2020-10-29 12:15:17,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:17,419 INFO L225 Difference]: With dead ends: 281 [2020-10-29 12:15:17,419 INFO L226 Difference]: Without dead ends: 152 [2020-10-29 12:15:17,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-29 12:15:17,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-29 12:15:17,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 146. [2020-10-29 12:15:17,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-29 12:15:17,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 183 transitions. [2020-10-29 12:15:17,435 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 183 transitions. Word has length 166 [2020-10-29 12:15:17,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:17,435 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 183 transitions. [2020-10-29 12:15:17,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 12:15:17,436 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 183 transitions. [2020-10-29 12:15:17,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-29 12:15:17,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:17,439 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 34, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:17,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 12:15:17,439 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:17,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:17,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1835592309, now seen corresponding path program 11 times [2020-10-29 12:15:17,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:17,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747675754] [2020-10-29 12:15:17,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:17,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:17,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:17,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:17,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:22,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:22,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-29 12:15:22,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:15:22,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 12:15:22,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:22,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:22,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:15:22,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 12:15:22,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 12:15:22,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:22,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:22,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:22,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:22,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:22,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:22,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:15:22,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:22,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:22,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:22,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:22,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:22,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:22,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:15:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:22,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:22,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:22,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:22,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 12:15:22,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:22,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-29 12:15:22,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:22,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:22,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:15:22,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:22,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 12:15:22,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:22,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 12:15:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:22,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:23,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:23,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 12:15:23,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:23,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-29 12:15:23,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:23,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:23,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:15:23,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:23,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 12:15:23,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:23,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-29 12:15:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:23,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:23,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:23,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:23,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 12:15:23,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:23,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-29 12:15:23,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:23,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:23,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:15:23,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:23,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 12:15:23,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:23,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2643 backedges. 828 proven. 1656 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-29 12:15:23,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747675754] [2020-10-29 12:15:23,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:23,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 12:15:23,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842516807] [2020-10-29 12:15:23,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 12:15:23,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:23,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 12:15:23,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:15:23,393 INFO L87 Difference]: Start difference. First operand 146 states and 183 transitions. Second operand 16 states. [2020-10-29 12:15:24,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:24,200 INFO L93 Difference]: Finished difference Result 297 states and 383 transitions. [2020-10-29 12:15:24,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:15:24,200 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 178 [2020-10-29 12:15:24,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:24,203 INFO L225 Difference]: With dead ends: 297 [2020-10-29 12:15:24,203 INFO L226 Difference]: Without dead ends: 160 [2020-10-29 12:15:24,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-29 12:15:24,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-29 12:15:24,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 154. [2020-10-29 12:15:24,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-29 12:15:24,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 193 transitions. [2020-10-29 12:15:24,219 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 193 transitions. Word has length 178 [2020-10-29 12:15:24,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:24,220 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 193 transitions. [2020-10-29 12:15:24,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 12:15:24,220 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 193 transitions. [2020-10-29 12:15:24,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-29 12:15:24,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:24,224 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 37, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:24,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 12:15:24,224 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:24,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:24,225 INFO L82 PathProgramCache]: Analyzing trace with hash 913735696, now seen corresponding path program 12 times [2020-10-29 12:15:24,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:24,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349474899] [2020-10-29 12:15:24,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:24,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:24,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:24,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:24,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:29,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:29,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-29 12:15:29,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:15:29,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 12:15:29,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:29,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:29,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:15:29,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:15:29,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 12:15:29,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:29,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:29,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:29,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:29,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:29,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:29,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:15:29,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:29,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:29,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:29,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:29,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:29,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:29,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:15:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:29,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:29,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:29,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 12:15:29,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:29,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-29 12:15:29,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:29,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:29,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:15:29,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:29,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 12:15:29,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:29,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 12:15:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:29,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:29,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:29,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:29,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 12:15:29,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:29,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-29 12:15:29,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:29,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:29,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:15:29,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:29,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 12:15:29,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:29,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-29 12:15:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:29,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:29,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:30,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:30,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 12:15:30,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:30,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-29 12:15:30,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:30,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:15:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 12:15:30,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:30,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3096 backedges. 975 proven. 1950 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-29 12:15:30,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349474899] [2020-10-29 12:15:30,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:30,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 12:15:30,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857998936] [2020-10-29 12:15:30,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 12:15:30,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:30,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 12:15:30,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:15:30,158 INFO L87 Difference]: Start difference. First operand 154 states and 193 transitions. Second operand 17 states. [2020-10-29 12:15:30,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:30,959 INFO L93 Difference]: Finished difference Result 313 states and 403 transitions. [2020-10-29 12:15:30,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 12:15:30,963 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 190 [2020-10-29 12:15:30,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:30,965 INFO L225 Difference]: With dead ends: 313 [2020-10-29 12:15:30,965 INFO L226 Difference]: Without dead ends: 168 [2020-10-29 12:15:30,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:15:30,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-29 12:15:30,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 162. [2020-10-29 12:15:30,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-29 12:15:30,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 203 transitions. [2020-10-29 12:15:30,980 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 203 transitions. Word has length 190 [2020-10-29 12:15:30,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:30,980 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 203 transitions. [2020-10-29 12:15:30,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 12:15:30,981 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 203 transitions. [2020-10-29 12:15:30,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-29 12:15:30,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:30,984 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 40, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:30,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 12:15:30,985 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:30,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:30,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1914075861, now seen corresponding path program 13 times [2020-10-29 12:15:30,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:30,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362677692] [2020-10-29 12:15:30,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:31,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:31,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:31,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:31,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:36,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:36,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-29 12:15:36,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:15:36,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 12:15:36,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:36,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:36,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:15:36,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:15:36,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 12:15:36,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:36,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:36,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:36,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:36,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:36,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:36,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:15:36,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:36,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:36,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:36,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:36,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:36,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:36,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:15:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:36,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:36,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:36,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 12:15:36,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:36,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-29 12:15:36,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:36,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:36,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:15:36,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:36,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 12:15:36,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:36,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:15:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:36,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:36,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:36,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:36,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 12:15:36,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:36,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-29 12:15:36,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:36,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:36,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:15:36,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:36,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 12:15:36,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:36,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-29 12:15:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:36,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:36,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:36,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:36,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 12:15:36,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:36,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-29 12:15:36,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:36,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:15:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 12:15:36,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:37,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3585 backedges. 1134 proven. 2268 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-29 12:15:37,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362677692] [2020-10-29 12:15:37,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:37,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 12:15:37,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642006912] [2020-10-29 12:15:37,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 12:15:37,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:37,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 12:15:37,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:15:37,004 INFO L87 Difference]: Start difference. First operand 162 states and 203 transitions. Second operand 18 states. [2020-10-29 12:15:37,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:37,837 INFO L93 Difference]: Finished difference Result 329 states and 423 transitions. [2020-10-29 12:15:37,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:15:37,838 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 202 [2020-10-29 12:15:37,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:37,840 INFO L225 Difference]: With dead ends: 329 [2020-10-29 12:15:37,840 INFO L226 Difference]: Without dead ends: 176 [2020-10-29 12:15:37,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 12:15:37,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-29 12:15:37,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 170. [2020-10-29 12:15:37,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-29 12:15:37,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 213 transitions. [2020-10-29 12:15:37,856 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 213 transitions. Word has length 202 [2020-10-29 12:15:37,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:37,856 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 213 transitions. [2020-10-29 12:15:37,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 12:15:37,857 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 213 transitions. [2020-10-29 12:15:37,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-29 12:15:37,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:37,861 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 43, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:37,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 12:15:37,861 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:37,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:37,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1073628730, now seen corresponding path program 14 times [2020-10-29 12:15:37,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:37,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735306882] [2020-10-29 12:15:37,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:37,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:37,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:37,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:37,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:42,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:42,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-29 12:15:42,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:15:42,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 12:15:42,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:42,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:42,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:15:42,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:15:42,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 12:15:42,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:42,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:42,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:42,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:42,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:42,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:42,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:15:42,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:42,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:42,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:42,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:42,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:42,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:42,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:15:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:42,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:43,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:43,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 12:15:43,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:43,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-29 12:15:43,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:43,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:43,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:15:43,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:43,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 12:15:43,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:43,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 12:15:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:43,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:43,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:43,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:43,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 12:15:43,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:43,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-29 12:15:43,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:43,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:43,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:15:43,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:43,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 12:15:43,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:43,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-29 12:15:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:43,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:43,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:44,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:44,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 12:15:44,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:44,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-29 12:15:44,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:44,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:44,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:15:44,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:44,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 12:15:44,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:44,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4110 backedges. 1305 proven. 2610 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-29 12:15:44,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735306882] [2020-10-29 12:15:44,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:44,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 12:15:44,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073538504] [2020-10-29 12:15:44,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 12:15:44,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:44,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 12:15:44,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:15:44,069 INFO L87 Difference]: Start difference. First operand 170 states and 213 transitions. Second operand 19 states. [2020-10-29 12:15:45,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:45,023 INFO L93 Difference]: Finished difference Result 345 states and 443 transitions. [2020-10-29 12:15:45,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:15:45,024 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 214 [2020-10-29 12:15:45,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:45,026 INFO L225 Difference]: With dead ends: 345 [2020-10-29 12:15:45,026 INFO L226 Difference]: Without dead ends: 184 [2020-10-29 12:15:45,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 12:15:45,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-29 12:15:45,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 178. [2020-10-29 12:15:45,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-29 12:15:45,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 223 transitions. [2020-10-29 12:15:45,047 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 223 transitions. Word has length 214 [2020-10-29 12:15:45,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:45,048 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 223 transitions. [2020-10-29 12:15:45,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 12:15:45,048 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 223 transitions. [2020-10-29 12:15:45,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-29 12:15:45,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:45,051 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 46, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:45,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 12:15:45,051 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:45,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:45,052 INFO L82 PathProgramCache]: Analyzing trace with hash 786357729, now seen corresponding path program 15 times [2020-10-29 12:15:45,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:45,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794069836] [2020-10-29 12:15:45,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:45,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:45,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:45,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:45,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:50,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:50,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 12:15:50,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:15:50,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 12:15:50,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:50,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:50,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:15:50,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:15:50,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 12:15:50,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:50,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:50,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:50,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:50,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:50,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:50,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:15:50,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:50,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:50,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:50,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:50,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:50,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:50,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:15:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:50,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:50,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:50,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 12:15:50,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:50,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-29 12:15:50,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:50,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:50,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:15:50,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:50,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 12:15:50,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:50,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 12:15:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:50,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:50,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:51,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:51,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 12:15:51,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:51,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-29 12:15:51,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:51,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:51,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:15:51,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:51,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 12:15:51,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:51,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-29 12:15:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:51,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:51,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:51,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:51,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 12:15:51,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:51,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-29 12:15:51,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:51,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:51,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:15:51,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:51,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 12:15:51,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:51,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4671 backedges. 1488 proven. 2976 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-10-29 12:15:51,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794069836] [2020-10-29 12:15:51,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:51,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 12:15:51,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229499882] [2020-10-29 12:15:51,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 12:15:51,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:51,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 12:15:51,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:15:51,418 INFO L87 Difference]: Start difference. First operand 178 states and 223 transitions. Second operand 20 states. [2020-10-29 12:15:52,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:15:52,408 INFO L93 Difference]: Finished difference Result 361 states and 463 transitions. [2020-10-29 12:15:52,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 12:15:52,409 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 226 [2020-10-29 12:15:52,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:15:52,411 INFO L225 Difference]: With dead ends: 361 [2020-10-29 12:15:52,411 INFO L226 Difference]: Without dead ends: 192 [2020-10-29 12:15:52,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 12:15:52,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-29 12:15:52,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 186. [2020-10-29 12:15:52,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-29 12:15:52,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 233 transitions. [2020-10-29 12:15:52,429 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 233 transitions. Word has length 226 [2020-10-29 12:15:52,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:15:52,429 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 233 transitions. [2020-10-29 12:15:52,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 12:15:52,430 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 233 transitions. [2020-10-29 12:15:52,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-29 12:15:52,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:15:52,433 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 49, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:15:52,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 12:15:52,433 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:15:52,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:15:52,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1031753348, now seen corresponding path program 16 times [2020-10-29 12:15:52,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:15:52,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011750387] [2020-10-29 12:15:52,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:15:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:52,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:52,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:52,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:52,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:57,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:57,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-29 12:15:57,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:15:57,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-29 12:15:57,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:57,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:57,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:15:57,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:15:57,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 12:15:57,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:57,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:15:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:57,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:57,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:57,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:15:57,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:57,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:15:57,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:57,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:57,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:15:57,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:15:57,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:15:57,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:57,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:15:57,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:57,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:57,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:57,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 12:15:57,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:15:57,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-29 12:15:57,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:57,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:57,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:15:57,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:57,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 12:15:57,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:58,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 12:15:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:58,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:58,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:58,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:58,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 12:15:58,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:58,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-29 12:15:58,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:58,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:58,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:15:58,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:58,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 12:15:58,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:58,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-29 12:15:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:15:58,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:58,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:15:58,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:15:58,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 12:15:58,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:15:58,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-10-29 12:15:58,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:15:58,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:15:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:15:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:15:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 12:15:58,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:15:59,021 INFO L134 CoverageAnalysis]: Checked inductivity of 5268 backedges. 1683 proven. 3366 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-29 12:15:59,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011750387] [2020-10-29 12:15:59,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:15:59,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 12:15:59,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326233376] [2020-10-29 12:15:59,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 12:15:59,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:15:59,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 12:15:59,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 12:15:59,023 INFO L87 Difference]: Start difference. First operand 186 states and 233 transitions. Second operand 21 states. [2020-10-29 12:16:00,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:00,110 INFO L93 Difference]: Finished difference Result 377 states and 483 transitions. [2020-10-29 12:16:00,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 12:16:00,111 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 238 [2020-10-29 12:16:00,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:00,113 INFO L225 Difference]: With dead ends: 377 [2020-10-29 12:16:00,115 INFO L226 Difference]: Without dead ends: 200 [2020-10-29 12:16:00,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 12:16:00,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-29 12:16:00,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 194. [2020-10-29 12:16:00,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-29 12:16:00,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 243 transitions. [2020-10-29 12:16:00,142 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 243 transitions. Word has length 238 [2020-10-29 12:16:00,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:00,143 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 243 transitions. [2020-10-29 12:16:00,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 12:16:00,143 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 243 transitions. [2020-10-29 12:16:00,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-29 12:16:00,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:00,146 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 52, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:00,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 12:16:00,146 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:00,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:00,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1489433751, now seen corresponding path program 17 times [2020-10-29 12:16:00,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:00,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841821807] [2020-10-29 12:16:00,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:00,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:00,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:00,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:00,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:05,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:05,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-29 12:16:05,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:16:05,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 12:16:05,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:05,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:05,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:16:05,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:16:05,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 12:16:05,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:05,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:05,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:05,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:05,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:05,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:05,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:16:05,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:05,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:05,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:05,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:05,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:05,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:05,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:05,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:05,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:05,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 12:16:05,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:05,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-10-29 12:16:05,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:05,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:05,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:16:05,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:05,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 12:16:05,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:05,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-29 12:16:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:05,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:06,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:06,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:06,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 12:16:06,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:06,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-29 12:16:06,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:06,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:06,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:16:06,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:06,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 12:16:06,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:06,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-29 12:16:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:06,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:06,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:07,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:07,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 12:16:07,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:07,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 701 [2020-10-29 12:16:07,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:07,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:07,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:16:07,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:07,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 12:16:07,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:07,240 INFO L134 CoverageAnalysis]: Checked inductivity of 5901 backedges. 1890 proven. 3780 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-29 12:16:07,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841821807] [2020-10-29 12:16:07,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:07,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 12:16:07,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614170155] [2020-10-29 12:16:07,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 12:16:07,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:07,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 12:16:07,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 12:16:07,242 INFO L87 Difference]: Start difference. First operand 194 states and 243 transitions. Second operand 22 states. [2020-10-29 12:16:08,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:08,454 INFO L93 Difference]: Finished difference Result 393 states and 503 transitions. [2020-10-29 12:16:08,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 12:16:08,455 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 250 [2020-10-29 12:16:08,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:08,458 INFO L225 Difference]: With dead ends: 393 [2020-10-29 12:16:08,458 INFO L226 Difference]: Without dead ends: 208 [2020-10-29 12:16:08,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 12:16:08,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-29 12:16:08,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 202. [2020-10-29 12:16:08,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-29 12:16:08,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 253 transitions. [2020-10-29 12:16:08,475 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 253 transitions. Word has length 250 [2020-10-29 12:16:08,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:08,475 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 253 transitions. [2020-10-29 12:16:08,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 12:16:08,475 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 253 transitions. [2020-10-29 12:16:08,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-29 12:16:08,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:08,478 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 55, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:08,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 12:16:08,479 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:08,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:08,479 INFO L82 PathProgramCache]: Analyzing trace with hash 896624434, now seen corresponding path program 18 times [2020-10-29 12:16:08,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:08,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919347719] [2020-10-29 12:16:08,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:08,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:08,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:08,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:08,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:13,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:13,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-29 12:16:13,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:16:13,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 12:16:13,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:13,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:13,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 12:16:13,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:16:13,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 12:16:13,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:13,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:13,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:13,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:13,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:13,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:13,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:16:13,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:13,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:13,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:13,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:13,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:13,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:13,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:13,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:13,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:13,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 12:16:13,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:13,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 410 [2020-10-29 12:16:13,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:13,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:13,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 12:16:13,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:13,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 12:16:13,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:14,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-29 12:16:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:14,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:14,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:15,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:15,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 12:16:15,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:15,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 637 [2020-10-29 12:16:15,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:15,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:15,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 12:16:15,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:15,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 12:16:15,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:15,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-29 12:16:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:15,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:15,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:15,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:15,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 12:16:15,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:15,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-10-29 12:16:15,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:15,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:15,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 12:16:15,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:15,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 12:16:15,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:15,678 INFO L134 CoverageAnalysis]: Checked inductivity of 6570 backedges. 2109 proven. 4218 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-10-29 12:16:15,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919347719] [2020-10-29 12:16:15,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:15,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 12:16:15,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825782038] [2020-10-29 12:16:15,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 12:16:15,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:15,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 12:16:15,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:16:15,681 INFO L87 Difference]: Start difference. First operand 202 states and 253 transitions. Second operand 23 states. [2020-10-29 12:16:16,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:16,900 INFO L93 Difference]: Finished difference Result 409 states and 523 transitions. [2020-10-29 12:16:16,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 12:16:16,900 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 262 [2020-10-29 12:16:16,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:16,904 INFO L225 Difference]: With dead ends: 409 [2020-10-29 12:16:16,904 INFO L226 Difference]: Without dead ends: 216 [2020-10-29 12:16:16,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 12:16:16,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-29 12:16:16,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 210. [2020-10-29 12:16:16,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-29 12:16:16,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 263 transitions. [2020-10-29 12:16:16,922 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 263 transitions. Word has length 262 [2020-10-29 12:16:16,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:16,923 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 263 transitions. [2020-10-29 12:16:16,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 12:16:16,923 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 263 transitions. [2020-10-29 12:16:16,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-29 12:16:16,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:16,926 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 58, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:16,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 12:16:16,927 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:16,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:16,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1914685773, now seen corresponding path program 19 times [2020-10-29 12:16:16,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:16,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106351924] [2020-10-29 12:16:16,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:16,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:16,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:17,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:17,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:21,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:21,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-29 12:16:21,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:16:21,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 12:16:21,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:21,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:21,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:16:21,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:16:21,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 12:16:21,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:22,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:22,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:22,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:22,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:22,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:22,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:16:22,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:22,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:22,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:22,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:22,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:22,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:22,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:22,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:22,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:22,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 12:16:22,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:22,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-10-29 12:16:22,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:22,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:16:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 12:16:22,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:22,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-29 12:16:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:22,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:23,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:23,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:23,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 12:16:23,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:23,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 591 [2020-10-29 12:16:23,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:23,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:23,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:16:23,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:23,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 12:16:23,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:23,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-29 12:16:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:23,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:23,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:24,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:24,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 12:16:24,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:24,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-10-29 12:16:24,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:24,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:24,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:16:24,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:24,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 12:16:24,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:24,199 INFO L134 CoverageAnalysis]: Checked inductivity of 7275 backedges. 2340 proven. 4680 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2020-10-29 12:16:24,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106351924] [2020-10-29 12:16:24,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:24,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 12:16:24,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010286772] [2020-10-29 12:16:24,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 12:16:24,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:24,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 12:16:24,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 12:16:24,202 INFO L87 Difference]: Start difference. First operand 210 states and 263 transitions. Second operand 24 states. [2020-10-29 12:16:25,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:25,465 INFO L93 Difference]: Finished difference Result 425 states and 543 transitions. [2020-10-29 12:16:25,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 12:16:25,466 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 274 [2020-10-29 12:16:25,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:25,468 INFO L225 Difference]: With dead ends: 425 [2020-10-29 12:16:25,468 INFO L226 Difference]: Without dead ends: 224 [2020-10-29 12:16:25,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 12:16:25,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-29 12:16:25,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 218. [2020-10-29 12:16:25,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-29 12:16:25,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 273 transitions. [2020-10-29 12:16:25,487 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 273 transitions. Word has length 274 [2020-10-29 12:16:25,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:25,488 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 273 transitions. [2020-10-29 12:16:25,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 12:16:25,488 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 273 transitions. [2020-10-29 12:16:25,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-29 12:16:25,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:25,491 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 63, 61, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:25,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 12:16:25,491 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:25,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:25,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1850858216, now seen corresponding path program 20 times [2020-10-29 12:16:25,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:25,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803123572] [2020-10-29 12:16:25,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:25,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:25,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:25,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:25,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:30,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:30,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-29 12:16:30,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:16:30,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-29 12:16:30,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:30,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:30,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 12:16:30,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-29 12:16:30,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 12:16:30,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:30,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:30,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:30,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:30,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:30,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:30,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:16:30,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:30,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:30,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:30,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:30,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:30,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:30,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:30,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:30,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:31,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:31,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 12:16:31,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:31,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 546 [2020-10-29 12:16:31,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:31,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:31,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 12:16:31,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:31,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 12:16:31,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:31,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-29 12:16:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:31,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:32,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:32,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 12:16:32,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:32,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 599 [2020-10-29 12:16:32,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:32,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:32,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 12:16:32,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:32,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 12:16:32,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:32,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-29 12:16:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:32,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:32,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:32,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:32,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 12:16:32,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:32,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-10-29 12:16:32,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:32,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:32,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 12:16:32,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:32,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 12:16:32,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:32,871 INFO L134 CoverageAnalysis]: Checked inductivity of 8016 backedges. 2583 proven. 5166 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-10-29 12:16:32,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803123572] [2020-10-29 12:16:32,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:32,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 12:16:32,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257759724] [2020-10-29 12:16:32,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 12:16:32,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:32,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 12:16:32,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 12:16:32,874 INFO L87 Difference]: Start difference. First operand 218 states and 273 transitions. Second operand 25 states. [2020-10-29 12:16:34,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:34,326 INFO L93 Difference]: Finished difference Result 441 states and 563 transitions. [2020-10-29 12:16:34,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 12:16:34,327 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 286 [2020-10-29 12:16:34,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:34,330 INFO L225 Difference]: With dead ends: 441 [2020-10-29 12:16:34,330 INFO L226 Difference]: Without dead ends: 232 [2020-10-29 12:16:34,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 12:16:34,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-29 12:16:34,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 226. [2020-10-29 12:16:34,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-29 12:16:34,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 283 transitions. [2020-10-29 12:16:34,348 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 283 transitions. Word has length 286 [2020-10-29 12:16:34,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:34,349 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 283 transitions. [2020-10-29 12:16:34,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 12:16:34,349 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 283 transitions. [2020-10-29 12:16:34,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-29 12:16:34,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:34,352 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 66, 64, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:34,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 12:16:34,352 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:34,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:34,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1063738371, now seen corresponding path program 21 times [2020-10-29 12:16:34,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:34,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595895480] [2020-10-29 12:16:34,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:34,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:34,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:34,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:34,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:38,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:39,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:39,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-29 12:16:39,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:16:39,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-29 12:16:39,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:39,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:39,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 106 [2020-10-29 12:16:39,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:16:39,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-29 12:16:39,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:39,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:39,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:39,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:39,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:39,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:39,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:16:39,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:39,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:39,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:39,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:39,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:39,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:39,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:40,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:44,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:44,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 12:16:44,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:44,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4697 [2020-10-29 12:16:44,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:44,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:44,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 12:16:44,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:44,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 12:16:44,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:44,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-29 12:16:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:44,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:45,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:46,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:46,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 12:16:46,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:46,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1486 [2020-10-29 12:16:46,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:46,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:46,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 12:16:46,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:46,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 12:16:46,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:46,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-29 12:16:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:46,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:46,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:47,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:47,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 12:16:47,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:47,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 993 [2020-10-29 12:16:47,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:47,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:47,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 12:16:47,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:47,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 12:16:47,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:47,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8793 backedges. 2838 proven. 5676 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2020-10-29 12:16:47,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595895480] [2020-10-29 12:16:47,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:47,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 12:16:47,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54809767] [2020-10-29 12:16:47,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 12:16:47,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:47,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 12:16:47,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=450, Unknown=0, NotChecked=0, Total=756 [2020-10-29 12:16:47,566 INFO L87 Difference]: Start difference. First operand 226 states and 283 transitions. Second operand 28 states. [2020-10-29 12:16:49,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:49,174 INFO L93 Difference]: Finished difference Result 457 states and 583 transitions. [2020-10-29 12:16:49,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 12:16:49,175 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 298 [2020-10-29 12:16:49,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:49,178 INFO L225 Difference]: With dead ends: 457 [2020-10-29 12:16:49,178 INFO L226 Difference]: Without dead ends: 240 [2020-10-29 12:16:49,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=904, Invalid=1646, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 12:16:49,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-29 12:16:49,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 234. [2020-10-29 12:16:49,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-29 12:16:49,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 293 transitions. [2020-10-29 12:16:49,199 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 293 transitions. Word has length 298 [2020-10-29 12:16:49,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:49,199 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 293 transitions. [2020-10-29 12:16:49,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 12:16:49,199 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 293 transitions. [2020-10-29 12:16:49,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-29 12:16:49,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:49,202 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 69, 67, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:49,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 12:16:49,203 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:49,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:49,203 INFO L82 PathProgramCache]: Analyzing trace with hash 547359902, now seen corresponding path program 22 times [2020-10-29 12:16:49,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:49,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63680677] [2020-10-29 12:16:49,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:49,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:49,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:49,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:49,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:52,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:54,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:54,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-29 12:16:54,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:16:54,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 12:16:54,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:54,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:54,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 103 [2020-10-29 12:16:54,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:16:54,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-29 12:16:54,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:54,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:54,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:54,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:54,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:54,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:54,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:16:54,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:54,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:54,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:54,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:54,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:54,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:54,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:54,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:54,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:59,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:59,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 12:16:59,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:59,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 12:16:59,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:59,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:59,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 12:16:59,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:59,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 12:16:59,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:59,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-29 12:16:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:59,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:00,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:01,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:01,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 12:17:01,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:01,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1776 [2020-10-29 12:17:01,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:01,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:01,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 12:17:01,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:01,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 12:17:01,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:01,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-29 12:17:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:01,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:01,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:02,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:02,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 12:17:02,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:02,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 623 [2020-10-29 12:17:02,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:02,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:02,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 12:17:02,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:02,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 12:17:02,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:02,557 INFO L134 CoverageAnalysis]: Checked inductivity of 9606 backedges. 3105 proven. 6210 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2020-10-29 12:17:02,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63680677] [2020-10-29 12:17:02,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:02,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 12:17:02,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012265088] [2020-10-29 12:17:02,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 12:17:02,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:02,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 12:17:02,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=481, Unknown=0, NotChecked=0, Total=812 [2020-10-29 12:17:02,560 INFO L87 Difference]: Start difference. First operand 234 states and 293 transitions. Second operand 29 states. [2020-10-29 12:17:04,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:04,257 INFO L93 Difference]: Finished difference Result 473 states and 603 transitions. [2020-10-29 12:17:04,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 12:17:04,258 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 310 [2020-10-29 12:17:04,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:04,262 INFO L225 Difference]: With dead ends: 473 [2020-10-29 12:17:04,262 INFO L226 Difference]: Without dead ends: 248 [2020-10-29 12:17:04,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=979, Invalid=1777, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 12:17:04,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-29 12:17:04,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 242. [2020-10-29 12:17:04,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-29 12:17:04,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 303 transitions. [2020-10-29 12:17:04,286 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 303 transitions. Word has length 310 [2020-10-29 12:17:04,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:04,287 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 303 transitions. [2020-10-29 12:17:04,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 12:17:04,287 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 303 transitions. [2020-10-29 12:17:04,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-29 12:17:04,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:04,292 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 72, 70, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:04,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 12:17:04,293 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:04,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:04,293 INFO L82 PathProgramCache]: Analyzing trace with hash -484725575, now seen corresponding path program 23 times [2020-10-29 12:17:04,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:04,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067076396] [2020-10-29 12:17:04,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:04,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:04,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:04,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:04,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:09,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:09,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-29 12:17:09,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:17:09,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 12:17:09,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:09,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:09,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 12:17:09,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-29 12:17:09,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 12:17:09,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:09,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:09,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:09,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:09,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:09,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:09,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:17:09,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:09,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:09,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:09,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:09,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:09,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:09,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:09,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:09,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:10,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:10,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 12:17:10,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:10,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 779 [2020-10-29 12:17:10,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:10,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:10,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 12:17:10,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:10,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 12:17:10,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:10,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-29 12:17:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:10,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:11,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:11,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 12:17:11,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:11,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 669 [2020-10-29 12:17:11,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:11,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:11,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 12:17:11,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:11,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 12:17:11,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:11,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-29 12:17:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:11,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:11,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:12,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:12,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 12:17:12,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:12,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 677 [2020-10-29 12:17:12,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:12,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:12,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 12:17:12,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:12,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 12:17:12,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:12,267 INFO L134 CoverageAnalysis]: Checked inductivity of 10455 backedges. 3384 proven. 6768 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-29 12:17:12,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067076396] [2020-10-29 12:17:12,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:12,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 12:17:12,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346573388] [2020-10-29 12:17:12,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 12:17:12,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:12,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 12:17:12,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 12:17:12,269 INFO L87 Difference]: Start difference. First operand 242 states and 303 transitions. Second operand 28 states. [2020-10-29 12:17:13,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:13,942 INFO L93 Difference]: Finished difference Result 489 states and 623 transitions. [2020-10-29 12:17:13,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 12:17:13,943 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 322 [2020-10-29 12:17:13,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:13,946 INFO L225 Difference]: With dead ends: 489 [2020-10-29 12:17:13,946 INFO L226 Difference]: Without dead ends: 256 [2020-10-29 12:17:13,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 12:17:13,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-29 12:17:13,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 250. [2020-10-29 12:17:13,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-29 12:17:13,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 313 transitions. [2020-10-29 12:17:13,969 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 313 transitions. Word has length 322 [2020-10-29 12:17:13,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:13,970 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 313 transitions. [2020-10-29 12:17:13,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 12:17:13,970 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 313 transitions. [2020-10-29 12:17:13,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-29 12:17:13,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:13,973 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 75, 73, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:13,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 12:17:13,974 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:13,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:13,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1574566996, now seen corresponding path program 24 times [2020-10-29 12:17:13,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:13,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399749465] [2020-10-29 12:17:13,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:13,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:14,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:14,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:14,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:19,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:19,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-29 12:17:19,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:17:19,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5096 [2020-10-29 12:17:19,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:19,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:19,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 12:17:19,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:17:19,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 12:17:19,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:19,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:19,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:19,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:19,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:19,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:19,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:19,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:19,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:19,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:19,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:19,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:19,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:19,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:19,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:19,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:19,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 12:17:19,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:19,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 763 [2020-10-29 12:17:19,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:19,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:19,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 12:17:19,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:19,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 12:17:19,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:20,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-29 12:17:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:20,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:20,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:21,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:21,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 12:17:21,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:21,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 772 [2020-10-29 12:17:21,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:21,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:21,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 12:17:21,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:21,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 12:17:21,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:21,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-29 12:17:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:21,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:21,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:22,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:22,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 12:17:22,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:22,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 747 [2020-10-29 12:17:22,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:22,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:22,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 12:17:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 12:17:22,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:22,194 INFO L134 CoverageAnalysis]: Checked inductivity of 11340 backedges. 3675 proven. 7350 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-10-29 12:17:22,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399749465] [2020-10-29 12:17:22,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:22,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 12:17:22,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82428891] [2020-10-29 12:17:22,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 12:17:22,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:22,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 12:17:22,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 12:17:22,196 INFO L87 Difference]: Start difference. First operand 250 states and 313 transitions. Second operand 29 states. [2020-10-29 12:17:23,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:23,962 INFO L93 Difference]: Finished difference Result 505 states and 643 transitions. [2020-10-29 12:17:23,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 12:17:23,963 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 334 [2020-10-29 12:17:23,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:23,966 INFO L225 Difference]: With dead ends: 505 [2020-10-29 12:17:23,966 INFO L226 Difference]: Without dead ends: 264 [2020-10-29 12:17:23,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2020-10-29 12:17:23,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-10-29 12:17:23,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 258. [2020-10-29 12:17:23,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-29 12:17:23,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 323 transitions. [2020-10-29 12:17:23,987 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 323 transitions. Word has length 334 [2020-10-29 12:17:23,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:23,988 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 323 transitions. [2020-10-29 12:17:23,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 12:17:23,988 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 323 transitions. [2020-10-29 12:17:23,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-29 12:17:23,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:23,991 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 78, 76, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:23,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 12:17:23,992 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:23,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:23,992 INFO L82 PathProgramCache]: Analyzing trace with hash -574964881, now seen corresponding path program 25 times [2020-10-29 12:17:23,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:23,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295305340] [2020-10-29 12:17:23,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:24,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:24,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:24,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:24,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:29,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:29,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-10-29 12:17:29,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:17:29,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-29 12:17:29,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:29,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:29,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 12:17:29,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-29 12:17:29,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 12:17:29,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:29,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:29,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:29,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:29,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:29,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:29,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:29,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:29,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:29,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:29,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:29,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:29,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:29,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:29,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:29,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:30,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:30,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 12:17:30,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:30,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 865 [2020-10-29 12:17:30,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:30,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:30,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 12:17:30,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:30,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 12:17:30,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:30,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 12:17:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:30,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:31,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:31,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 12:17:31,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:31,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 810 [2020-10-29 12:17:31,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:31,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:31,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 12:17:31,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:31,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 12:17:31,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:31,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-29 12:17:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:31,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:31,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:32,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:32,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 12:17:32,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:32,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 819 [2020-10-29 12:17:32,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:32,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:32,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 12:17:32,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:32,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 12:17:32,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:32,455 INFO L134 CoverageAnalysis]: Checked inductivity of 12261 backedges. 3978 proven. 7956 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2020-10-29 12:17:32,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295305340] [2020-10-29 12:17:32,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:32,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 12:17:32,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715011100] [2020-10-29 12:17:32,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 12:17:32,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:32,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 12:17:32,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 12:17:32,458 INFO L87 Difference]: Start difference. First operand 258 states and 323 transitions. Second operand 30 states. [2020-10-29 12:17:34,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:34,299 INFO L93 Difference]: Finished difference Result 521 states and 663 transitions. [2020-10-29 12:17:34,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 12:17:34,299 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 346 [2020-10-29 12:17:34,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:34,301 INFO L225 Difference]: With dead ends: 521 [2020-10-29 12:17:34,301 INFO L226 Difference]: Without dead ends: 272 [2020-10-29 12:17:34,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2020-10-29 12:17:34,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-10-29 12:17:34,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 266. [2020-10-29 12:17:34,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-29 12:17:34,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 333 transitions. [2020-10-29 12:17:34,323 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 333 transitions. Word has length 346 [2020-10-29 12:17:34,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:34,324 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 333 transitions. [2020-10-29 12:17:34,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 12:17:34,324 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 333 transitions. [2020-10-29 12:17:34,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-10-29 12:17:34,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:34,327 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 81, 79, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:34,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 12:17:34,328 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:34,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:34,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1786926582, now seen corresponding path program 26 times [2020-10-29 12:17:34,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:34,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637296255] [2020-10-29 12:17:34,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:34,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:34,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:34,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:34,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:37,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:39,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:39,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-29 12:17:39,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:17:39,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5616 [2020-10-29 12:17:39,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:39,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 91 [2020-10-29 12:17:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:17:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 229 [2020-10-29 12:17:39,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:40,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat