/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/sum20-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:16:51,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:16:51,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:16:51,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:16:51,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:16:51,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:16:51,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:16:51,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:16:51,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:16:51,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:16:51,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:16:51,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:16:51,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:16:51,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:16:51,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:16:51,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:16:51,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:16:51,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:16:51,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:16:51,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:16:51,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:16:51,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:16:51,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:16:51,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:16:51,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:16:51,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:16:51,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:16:51,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:16:51,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:16:51,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:16:51,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:16:51,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:16:51,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:16:51,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:16:51,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:16:51,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:16:51,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:16:51,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:16:51,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:16:51,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:16:51,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:16:51,660 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 12:16:51,686 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:16:51,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:16:51,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:16:51,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:16:51,689 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:16:51,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:16:51,689 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:16:51,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:16:51,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:16:51,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:16:51,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:16:51,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:16:51,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:16:51,691 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:16:51,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:16:51,691 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:16:51,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:16:51,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:16:51,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:16:51,692 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:16:51,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:16:51,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:16:51,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:16:51,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:16:51,693 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:16:51,693 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:16:51,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:16:51,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:16:51,694 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:16:51,694 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:16:52,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:16:52,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:16:52,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:16:52,145 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:16:52,146 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:16:52,148 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum20-2.i [2020-10-29 12:16:52,249 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8ec80ddc/d17eb772141245b6833409115c7a2c88/FLAG0e17567e3 [2020-10-29 12:16:52,966 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:16:52,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sum20-2.i [2020-10-29 12:16:52,974 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8ec80ddc/d17eb772141245b6833409115c7a2c88/FLAG0e17567e3 [2020-10-29 12:16:53,328 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8ec80ddc/d17eb772141245b6833409115c7a2c88 [2020-10-29 12:16:53,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:16:53,339 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:16:53,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:16:53,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:16:53,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:16:53,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:16:53" (1/1) ... [2020-10-29 12:16:53,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@151fa72f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:53, skipping insertion in model container [2020-10-29 12:16:53,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:16:53" (1/1) ... [2020-10-29 12:16:53,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:16:53,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:16:53,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:16:53,578 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:16:53,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:16:53,622 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:16:53,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:53 WrapperNode [2020-10-29 12:16:53,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:16:53,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:16:53,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:16:53,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:16:53,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:53" (1/1) ... [2020-10-29 12:16:53,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:53" (1/1) ... [2020-10-29 12:16:53,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:53" (1/1) ... [2020-10-29 12:16:53,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:53" (1/1) ... [2020-10-29 12:16:53,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:53" (1/1) ... [2020-10-29 12:16:53,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:53" (1/1) ... [2020-10-29 12:16:53,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:53" (1/1) ... [2020-10-29 12:16:53,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:16:53,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:16:53,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:16:53,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:16:53,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:53" (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 12:16:53,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:16:53,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:16:53,764 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:16:53,764 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-10-29 12:16:53,764 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:16:53,765 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:16:53,765 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:16:53,765 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 12:16:53,765 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 12:16:53,765 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:16:53,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:16:53,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 12:16:53,766 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-10-29 12:16:53,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:16:53,766 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:16:53,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:16:53,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:16:53,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:16:53,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:16:53,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:16:54,344 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:16:54,345 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 12:16:54,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:16:54 BoogieIcfgContainer [2020-10-29 12:16:54,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:16:54,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:16:54,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:16:54,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:16:54,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:16:53" (1/3) ... [2020-10-29 12:16:54,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46256ba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:16:54, skipping insertion in model container [2020-10-29 12:16:54,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:53" (2/3) ... [2020-10-29 12:16:54,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46256ba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:16:54, skipping insertion in model container [2020-10-29 12:16:54,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:16:54" (3/3) ... [2020-10-29 12:16:54,396 INFO L111 eAbstractionObserver]: Analyzing ICFG sum20-2.i [2020-10-29 12:16:54,410 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:16:54,417 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:16:54,433 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:16:54,477 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:16:54,478 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:16:54,478 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:16:54,478 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:16:54,478 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:16:54,478 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:16:54,479 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:16:54,479 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:16:54,506 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-29 12:16:54,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 12:16:54,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:54,518 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 12:16:54,518 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:54,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:54,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1900796497, now seen corresponding path program 1 times [2020-10-29 12:16:54,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:54,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890538712] [2020-10-29 12:16:54,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:54,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:54,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:54,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:54,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:55,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:55,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:56,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:56,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:16:56,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:16:56,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1681 [2020-10-29 12:16:56,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:56,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:56,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:16:56,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:16:56,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:16:56,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 12:16:56,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:56,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:56,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:56,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:56,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:56,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:56,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:16:56,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:56,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:56,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:56,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:56,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:56,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:56,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:56,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:56,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:56,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:56,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:16:56,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:56,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 12:16:56,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:56,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:56,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:16:56,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:56,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:16:56,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:56,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 12:16:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:56,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:56,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:56,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:56,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:16:56,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:56,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 12:16:56,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:56,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:56,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:16:56,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:56,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:16:56,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:57,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:16:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:57,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:57,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:57,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:57,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:16:57,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:57,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 12:16:57,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:57,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:57,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:16:57,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:57,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:16:57,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:57,074 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 12:16:57,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890538712] [2020-10-29 12:16:57,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:16:57,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:16:57,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398692074] [2020-10-29 12:16:57,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:16:57,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:57,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:16:57,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:16:57,124 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 11 states. [2020-10-29 12:16:57,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:57,698 INFO L93 Difference]: Finished difference Result 87 states and 129 transitions. [2020-10-29 12:16:57,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 12:16:57,700 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-10-29 12:16:57,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:57,712 INFO L225 Difference]: With dead ends: 87 [2020-10-29 12:16:57,712 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 12:16:57,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:16:57,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 12:16:57,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 39. [2020-10-29 12:16:57,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 12:16:57,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2020-10-29 12:16:57,775 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 34 [2020-10-29 12:16:57,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:57,776 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2020-10-29 12:16:57,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:16:57,776 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2020-10-29 12:16:57,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 12:16:57,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:57,779 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] [2020-10-29 12:16:57,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:16:57,780 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:57,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:57,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1502494865, now seen corresponding path program 1 times [2020-10-29 12:16:57,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:57,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715613827] [2020-10-29 12:16:57,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:57,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:57,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:57,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:57,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:57,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:59,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:59,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:16:59,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:16:59,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1574 [2020-10-29 12:16:59,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:59,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:59,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:16:59,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:16:59,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 12:16:59,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:59,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:59,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:59,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:59,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:59,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:59,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:16:59,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:59,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:59,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:59,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:59,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:59,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:59,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:59,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:59,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:59,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:16:59,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:59,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 12:16:59,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:59,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:59,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:16:59,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:59,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 12:16:59,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:59,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 12:16:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:59,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:59,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:59,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:59,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:16:59,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:59,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:16:59,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:59,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:59,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:16:59,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:59,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:16:59,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:59,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 12:16:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:59,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:59,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:59,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:59,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:16:59,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:59,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:16:59,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:59,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:59,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:16:59,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:59,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:16:59,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:59,541 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 12:16:59,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715613827] [2020-10-29 12:16:59,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:59,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 12:16:59,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88605040] [2020-10-29 12:16:59,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:16:59,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:59,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:16:59,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:16:59,548 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand 5 states. [2020-10-29 12:16:59,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:59,713 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2020-10-29 12:16:59,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:16:59,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-29 12:16:59,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:59,715 INFO L225 Difference]: With dead ends: 62 [2020-10-29 12:16:59,715 INFO L226 Difference]: Without dead ends: 32 [2020-10-29 12:16:59,716 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 12:16:59,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-29 12:16:59,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-29 12:16:59,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-29 12:16:59,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-29 12:16:59,724 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 36 [2020-10-29 12:16:59,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:59,725 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-29 12:16:59,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:16:59,725 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-29 12:16:59,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 12:16:59,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:59,727 INFO L422 BasicCegarLoop]: trace histogram [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 12:16:59,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:16:59,727 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:59,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:59,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1194393741, now seen corresponding path program 2 times [2020-10-29 12:16:59,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:59,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501491489] [2020-10-29 12:16:59,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:59,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:59,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:59,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:59,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:00,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:04,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:04,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 12:17:04,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:17:04,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 12:17:04,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:04,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:04,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:17:04,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 12:17:04,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:17:04,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:04,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:04,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:04,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:04,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:04,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:04,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:04,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:17:04,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:04,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:04,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:04,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:04,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:04,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 12:17:04,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:04,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:04,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:04,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:04,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:17:04,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:04,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 12:17:04,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:04,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:17:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:17:04,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:04,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 12:17:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:04,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:04,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:04,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:17:04,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:04,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 12:17:04,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:04,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:04,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:17:04,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:04,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:17:04,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:04,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 12:17:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:04,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:04,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:04,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:04,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:17:04,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:04,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 12:17:04,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:04,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:04,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:17:04,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:04,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:17:04,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:04,993 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-29 12:17:04,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501491489] [2020-10-29 12:17:04,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:04,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 12:17:04,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348419072] [2020-10-29 12:17:04,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:17:04,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:04,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:17:04,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:17:04,999 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-10-29 12:17:05,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:05,215 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-29 12:17:05,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:17:05,215 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-29 12:17:05,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:05,216 INFO L225 Difference]: With dead ends: 56 [2020-10-29 12:17:05,216 INFO L226 Difference]: Without dead ends: 34 [2020-10-29 12:17:05,218 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 12:17:05,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-29 12:17:05,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-29 12:17:05,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 12:17:05,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-29 12:17:05,233 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 46 [2020-10-29 12:17:05,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:05,236 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-29 12:17:05,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:17:05,236 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-29 12:17:05,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 12:17:05,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:05,239 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 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 12:17:05,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:17:05,240 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:05,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:05,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1945310827, now seen corresponding path program 3 times [2020-10-29 12:17:05,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:05,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88424596] [2020-10-29 12:17:05,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:05,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:05,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:05,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:05,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:06,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:10,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:10,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 12:17:10,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:17:10,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 12:17:10,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:10,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:10,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:17:10,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 12:17:10,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:17:10,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:10,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:10,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:10,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:10,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:10,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:10,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:17:10,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:10,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:10,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:10,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:10,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:10,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:10,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:10,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:10,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:10,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:10,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:10,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:10,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 12:17:10,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:10,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:10,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:17:10,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:10,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:17:10,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:10,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 12:17:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:10,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:10,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:10,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:10,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:10,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 12:17:10,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:10,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:10,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:17:10,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:10,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:17:10,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:10,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 12:17:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:10,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:10,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:10,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:10,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:17:10,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:10,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 12:17:10,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:10,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:10,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:17:10,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:10,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:17:10,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:10,529 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-29 12:17:10,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88424596] [2020-10-29 12:17:10,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:10,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 12:17:10,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694158916] [2020-10-29 12:17:10,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 12:17:10,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:10,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 12:17:10,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:17:10,532 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 7 states. [2020-10-29 12:17:10,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:10,776 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-29 12:17:10,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 12:17:10,776 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-29 12:17:10,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:10,777 INFO L225 Difference]: With dead ends: 60 [2020-10-29 12:17:10,778 INFO L226 Difference]: Without dead ends: 36 [2020-10-29 12:17:10,779 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 12:17:10,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-29 12:17:10,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-29 12:17:10,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-29 12:17:10,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-29 12:17:10,789 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 52 [2020-10-29 12:17:10,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:10,790 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-29 12:17:10,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 12:17:10,791 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-29 12:17:10,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 12:17:10,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:10,795 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 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 12:17:10,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:17:10,796 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:10,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:10,800 INFO L82 PathProgramCache]: Analyzing trace with hash -2080502327, now seen corresponding path program 4 times [2020-10-29 12:17:10,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:10,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38196744] [2020-10-29 12:17:10,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:10,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:10,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:10,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:10,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:12,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:15,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:15,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 12:17:15,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:17:15,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 12:17:15,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:15,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:15,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:17:15,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 12:17:15,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:17:15,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:17:15,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:15,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:15,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:15,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:15,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:15,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:17:15,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:15,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:15,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:15,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:15,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:15,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:15,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:15,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 12:17:15,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:15,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 12:17:15,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:15,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:15,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:17:15,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:15,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:17:15,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:16,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 12:17:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:16,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:16,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:16,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 12:17:16,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:16,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 12:17:16,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:16,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:16,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:17:16,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:16,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:17:16,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:16,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:17:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:16,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:16,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:16,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:16,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 12:17:16,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:16,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 12:17:16,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:16,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:16,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:17:16,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:16,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:17:16,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:16,127 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-29 12:17:16,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38196744] [2020-10-29 12:17:16,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:16,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 12:17:16,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168428395] [2020-10-29 12:17:16,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 12:17:16,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:16,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 12:17:16,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:17:16,130 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 8 states. [2020-10-29 12:17:16,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:16,366 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-29 12:17:16,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:17:16,366 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-29 12:17:16,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:16,367 INFO L225 Difference]: With dead ends: 64 [2020-10-29 12:17:16,367 INFO L226 Difference]: Without dead ends: 38 [2020-10-29 12:17:16,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:17:16,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-29 12:17:16,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-29 12:17:16,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-29 12:17:16,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-29 12:17:16,375 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 58 [2020-10-29 12:17:16,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:16,376 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-29 12:17:16,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 12:17:16,376 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-29 12:17:16,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 12:17:16,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:16,377 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 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 12:17:16,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:17:16,377 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:16,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:16,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1013073575, now seen corresponding path program 5 times [2020-10-29 12:17:16,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:16,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288215856] [2020-10-29 12:17:16,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:16,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:16,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:16,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:16,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:18,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:21,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:21,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 12:17:21,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:17:21,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 12:17:21,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:21,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:21,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:17:21,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 12:17:21,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:17:21,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:21,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:21,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:21,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:21,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:21,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:21,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:17:21,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:21,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:21,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:21,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:21,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:21,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:21,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:21,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:21,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:21,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:21,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:17:21,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:21,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 12:17:21,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:21,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:21,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:17:21,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:21,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:17:21,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:21,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 12:17:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:21,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:21,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:21,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:17:21,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:21,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 12:17:21,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:21,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:21,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:17:21,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:21,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:17:21,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:21,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 12:17:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:21,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:21,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:21,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:21,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:17:21,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:21,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 12:17:21,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:21,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:21,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:17:21,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:21,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:17:21,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:21,694 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-29 12:17:21,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288215856] [2020-10-29 12:17:21,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:21,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 12:17:21,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624422296] [2020-10-29 12:17:21,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:17:21,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:21,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:17:21,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:17:21,699 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 9 states. [2020-10-29 12:17:21,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:21,978 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-29 12:17:21,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 12:17:21,979 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-10-29 12:17:21,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:21,980 INFO L225 Difference]: With dead ends: 68 [2020-10-29 12:17:21,981 INFO L226 Difference]: Without dead ends: 40 [2020-10-29 12:17:21,981 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 12:17:21,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-29 12:17:21,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-29 12:17:21,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 12:17:21,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-29 12:17:21,992 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 64 [2020-10-29 12:17:21,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:21,993 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-29 12:17:21,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:17:21,993 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-29 12:17:21,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 12:17:21,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:21,997 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 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 12:17:21,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:17:21,998 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:21,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:21,998 INFO L82 PathProgramCache]: Analyzing trace with hash 247996677, now seen corresponding path program 6 times [2020-10-29 12:17:21,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:21,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993496512] [2020-10-29 12:17:21,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:22,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:22,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:22,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:22,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:25,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:27,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:27,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 12:17:27,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:17:27,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 12:17:27,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:27,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:27,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:17:27,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 12:17:27,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:17:27,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:27,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:27,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:27,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:27,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:27,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:27,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:17:27,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:27,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:27,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:27,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:27,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:27,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:27,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:27,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:27,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:27,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:17:27,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:27,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 12:17:27,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:27,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:27,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:17:27,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:27,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:17:27,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:27,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 12:17:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:27,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:27,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:27,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:17:27,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:27,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 12:17:27,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:27,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:27,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:17:27,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:27,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:17:27,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:27,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:17:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:27,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:27,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:27,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:27,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:17:27,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:27,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 12:17:27,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:27,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:17:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:27,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:17:27,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:27,362 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-29 12:17:27,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993496512] [2020-10-29 12:17:27,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:27,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 12:17:27,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754049574] [2020-10-29 12:17:27,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:17:27,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:27,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:17:27,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:17:27,366 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 10 states. [2020-10-29 12:17:27,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:27,652 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-29 12:17:27,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 12:17:27,653 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-29 12:17:27,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:27,656 INFO L225 Difference]: With dead ends: 72 [2020-10-29 12:17:27,656 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 12:17:27,657 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 12:17:27,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 12:17:27,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-29 12:17:27,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 12:17:27,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-29 12:17:27,671 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 70 [2020-10-29 12:17:27,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:27,674 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-29 12:17:27,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:17:27,674 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-29 12:17:27,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 12:17:27,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:27,675 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 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 12:17:27,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:17:27,676 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:27,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:27,677 INFO L82 PathProgramCache]: Analyzing trace with hash 258997475, now seen corresponding path program 7 times [2020-10-29 12:17:27,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:27,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555040333] [2020-10-29 12:17:27,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:27,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:27,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:27,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:27,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:31,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:32,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:32,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 12:17:32,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:17:32,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 12:17:32,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:32,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:32,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:17:32,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:17:32,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:17:32,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:32,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:32,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:32,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:32,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:32,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:32,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:17:32,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:32,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:32,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:32,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:32,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:32,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:32,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:32,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:32,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:32,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 12:17:32,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:32,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 12:17:32,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:32,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:32,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:17:32,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:32,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:17:32,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:32,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 12:17:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:32,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:32,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:32,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:32,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 12:17:32,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:32,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 12:17:32,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:32,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:32,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:17:32,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:32,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:17:32,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:32,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:17:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:33,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:33,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:33,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:33,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 12:17:33,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:33,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 12:17:33,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:33,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:33,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:17:33,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:33,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:17:33,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:33,120 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-29 12:17:33,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555040333] [2020-10-29 12:17:33,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:33,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 12:17:33,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651494123] [2020-10-29 12:17:33,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:17:33,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:33,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:17:33,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:17:33,124 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 11 states. [2020-10-29 12:17:33,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:33,431 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-29 12:17:33,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 12:17:33,431 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-10-29 12:17:33,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:33,432 INFO L225 Difference]: With dead ends: 76 [2020-10-29 12:17:33,432 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 12:17:33,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:17:33,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 12:17:33,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-29 12:17:33,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 12:17:33,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-29 12:17:33,446 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 76 [2020-10-29 12:17:33,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:33,447 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-29 12:17:33,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:17:33,447 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-29 12:17:33,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 12:17:33,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:33,449 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 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 12:17:33,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:17:33,449 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:33,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:33,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1798453825, now seen corresponding path program 8 times [2020-10-29 12:17:33,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:33,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558491559] [2020-10-29 12:17:33,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:33,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:33,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:33,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:33,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:38,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:38,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 12:17:38,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:17:38,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 12:17:38,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:38,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:38,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:17:38,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 12:17:38,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:17:38,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:38,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:38,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:38,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:38,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:38,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:38,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:38,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:38,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:38,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:38,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:38,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:38,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:38,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:38,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:38,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:38,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:38,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:17:38,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:38,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 12:17:38,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:38,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:38,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:17:38,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:38,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:17:38,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:38,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 12:17:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:38,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:38,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:38,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:17:38,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:38,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 12:17:38,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:38,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:38,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:17:38,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:38,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:17:38,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:38,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 12:17:38,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:38,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:38,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:38,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:38,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:17:38,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:38,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-29 12:17:38,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:38,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:38,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:17:38,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:38,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:17:38,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:38,949 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-29 12:17:38,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558491559] [2020-10-29 12:17:38,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:38,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 12:17:38,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343918015] [2020-10-29 12:17:38,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:17:38,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:38,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:17:38,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:17:38,958 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 12 states. [2020-10-29 12:17:39,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:39,478 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-29 12:17:39,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 12:17:39,479 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-10-29 12:17:39,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:39,480 INFO L225 Difference]: With dead ends: 80 [2020-10-29 12:17:39,480 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 12:17:39,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-29 12:17:39,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 12:17:39,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-29 12:17:39,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 12:17:39,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-29 12:17:39,488 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 82 [2020-10-29 12:17:39,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:39,488 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-29 12:17:39,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:17:39,489 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-29 12:17:39,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 12:17:39,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:39,490 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 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 12:17:39,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:17:39,490 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:39,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:39,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1568618783, now seen corresponding path program 9 times [2020-10-29 12:17:39,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:39,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012035344] [2020-10-29 12:17:39,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:39,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:39,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:39,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:39,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:44,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:44,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 12:17:44,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:17:44,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 12:17:44,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:44,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:44,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:17:44,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-29 12:17:44,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:17:44,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:44,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:44,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:44,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:44,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:44,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:44,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:44,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:44,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:44,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:44,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:44,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:44,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:44,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:44,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:44,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:44,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:44,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 12:17:44,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:44,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-29 12:17:44,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:44,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:44,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:17:44,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:44,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:17:44,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:44,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:17:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:44,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:44,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:44,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 12:17:44,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:44,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 12:17:44,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:44,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:44,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:17:44,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:44,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:17:44,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:44,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 12:17:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:44,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:44,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:44,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:44,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 12:17:44,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:44,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 12:17:44,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:44,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:44,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:17:44,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:44,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:17:44,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:44,952 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 243 proven. 486 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-29 12:17:44,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012035344] [2020-10-29 12:17:44,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:44,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 12:17:44,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958218535] [2020-10-29 12:17:44,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:17:44,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:44,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:17:44,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:17:44,954 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 13 states. [2020-10-29 12:17:45,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:45,516 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-29 12:17:45,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 12:17:45,517 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 88 [2020-10-29 12:17:45,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:45,518 INFO L225 Difference]: With dead ends: 84 [2020-10-29 12:17:45,518 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 12:17:45,519 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 12:17:45,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 12:17:45,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-29 12:17:45,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 12:17:45,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-29 12:17:45,536 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 88 [2020-10-29 12:17:45,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:45,537 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-29 12:17:45,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:17:45,537 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-29 12:17:45,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 12:17:45,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:45,538 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 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 12:17:45,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:17:45,538 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:45,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:45,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1503700611, now seen corresponding path program 10 times [2020-10-29 12:17:45,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:45,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080505857] [2020-10-29 12:17:45,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:45,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:45,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:45,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:45,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:50,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:50,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 12:17:50,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:17:50,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 12:17:50,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:50,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:50,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:17:50,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 12:17:50,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:17:50,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:50,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:50,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:50,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:50,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:50,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:50,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:50,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:50,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:50,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:50,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:50,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:50,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:50,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:50,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:50,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:50,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:50,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:50,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:50,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:50,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-29 12:17:50,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:50,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:50,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:17:50,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:50,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:17:50,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:50,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 12:17:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:50,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:50,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:50,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:50,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:50,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 12:17:50,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:50,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:17:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:17:50,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:50,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 12:17:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:50,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:50,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:51,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:51,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:51,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:51,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-29 12:17:51,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:51,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:51,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:17:51,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:51,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:17:51,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:51,070 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 300 proven. 600 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 12:17:51,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080505857] [2020-10-29 12:17:51,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:51,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 12:17:51,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462423361] [2020-10-29 12:17:51,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:17:51,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:51,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:17:51,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:17:51,072 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 14 states. [2020-10-29 12:17:51,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:51,642 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-29 12:17:51,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:17:51,643 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 94 [2020-10-29 12:17:51,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:51,644 INFO L225 Difference]: With dead ends: 88 [2020-10-29 12:17:51,644 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 12:17:51,646 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 12:17:51,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 12:17:51,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-29 12:17:51,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-29 12:17:51,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-29 12:17:51,653 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 94 [2020-10-29 12:17:51,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:51,654 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-29 12:17:51,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:17:51,654 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-29 12:17:51,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 12:17:51,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:51,655 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 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 12:17:51,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:17:51,655 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:51,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:51,656 INFO L82 PathProgramCache]: Analyzing trace with hash -2139948197, now seen corresponding path program 11 times [2020-10-29 12:17:51,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:51,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917347627] [2020-10-29 12:17:51,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:51,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:51,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:51,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:51,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:56,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:56,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 12:17:56,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:17:56,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 12:17:56,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:56,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:56,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:17:56,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:17:56,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 12:17:56,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:56,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:56,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:56,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:56,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:56,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:56,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:56,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:56,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:56,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:56,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:56,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:56,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:56,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:56,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:56,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:56,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:56,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 12:17:56,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:56,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 12:17:56,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:56,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:56,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:17:56,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:56,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 12:17:56,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:57,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 12:17:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:57,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:57,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:57,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 12:17:57,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:57,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 12:17:57,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:57,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:57,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:17:57,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:57,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 12:17:57,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:57,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 12:17:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:57,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:57,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:57,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:57,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 12:17:57,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:57,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 12:17:57,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:57,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:57,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:17:57,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:57,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 12:17:57,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:57,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 363 proven. 726 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-29 12:17:57,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917347627] [2020-10-29 12:17:57,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:57,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 12:17:57,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356074181] [2020-10-29 12:17:57,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 12:17:57,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:57,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 12:17:57,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:17:57,331 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 15 states. [2020-10-29 12:17:58,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:58,093 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-10-29 12:17:58,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 12:17:58,094 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 100 [2020-10-29 12:17:58,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:58,095 INFO L225 Difference]: With dead ends: 92 [2020-10-29 12:17:58,095 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 12:17:58,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-29 12:17:58,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 12:17:58,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-29 12:17:58,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 12:17:58,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-29 12:17:58,109 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 100 [2020-10-29 12:17:58,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:58,109 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-29 12:17:58,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 12:17:58,109 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-29 12:17:58,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 12:17:58,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:58,112 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 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 12:17:58,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 12:17:58,113 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:58,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:58,114 INFO L82 PathProgramCache]: Analyzing trace with hash 384990905, now seen corresponding path program 12 times [2020-10-29 12:17:58,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:58,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901457286] [2020-10-29 12:17:58,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:58,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:58,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:58,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:58,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:03,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:03,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 12:18:03,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:18:03,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 12:18:03,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:03,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:03,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:18:03,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:18:03,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:18:03,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:03,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:03,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:03,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:03,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:03,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:03,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:18:03,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:03,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:03,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:03,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:03,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:03,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:03,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:03,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:03,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:03,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 12:18:03,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:03,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-29 12:18:03,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:03,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:03,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:18:03,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:03,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:18:03,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:03,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 12:18:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:03,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:03,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:03,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:03,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 12:18:03,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:03,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-29 12:18:03,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:03,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:03,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:18:03,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:03,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:18:03,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:03,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 12:18:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:03,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:03,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:04,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:04,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 12:18:04,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:04,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-29 12:18:04,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:04,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:04,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:18:04,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:04,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:18:04,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:04,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 432 proven. 864 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-29 12:18:04,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901457286] [2020-10-29 12:18:04,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:04,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 12:18:04,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6808928] [2020-10-29 12:18:04,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 12:18:04,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:04,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 12:18:04,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:18:04,138 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 16 states. [2020-10-29 12:18:04,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:04,759 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2020-10-29 12:18:04,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:18:04,760 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 106 [2020-10-29 12:18:04,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:04,761 INFO L225 Difference]: With dead ends: 96 [2020-10-29 12:18:04,762 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 12:18:04,763 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 12:18:04,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 12:18:04,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-29 12:18:04,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 12:18:04,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-29 12:18:04,771 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 106 [2020-10-29 12:18:04,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:04,772 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-29 12:18:04,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 12:18:04,772 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-29 12:18:04,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 12:18:04,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:04,773 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 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 12:18:04,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 12:18:04,773 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:04,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:04,774 INFO L82 PathProgramCache]: Analyzing trace with hash 2075018135, now seen corresponding path program 13 times [2020-10-29 12:18:04,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:04,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577053305] [2020-10-29 12:18:04,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:04,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:04,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:04,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:04,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:09,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:09,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 12:18:09,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:18:09,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 12:18:09,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:09,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:09,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:18:09,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:18:09,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:18:09,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:09,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:09,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:09,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:09,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:09,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:09,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:18:09,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:09,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:09,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:09,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:09,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:09,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-29 12:18:09,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:09,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:10,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:10,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 12:18:10,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:10,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 12:18:10,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:10,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:10,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:18:10,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:10,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:18:10,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:10,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 12:18:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:10,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:10,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:10,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:10,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 12:18:10,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:10,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-29 12:18:10,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:10,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:18:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:18:10,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:10,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 12:18:10,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:10,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:10,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:10,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:10,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 12:18:10,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:10,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-29 12:18:10,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:10,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:10,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:18:10,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:10,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:18:10,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:10,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1614 backedges. 507 proven. 1014 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-29 12:18:10,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577053305] [2020-10-29 12:18:10,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:10,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 12:18:10,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078396250] [2020-10-29 12:18:10,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 12:18:10,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:10,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 12:18:10,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:18:10,675 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 17 states. [2020-10-29 12:18:11,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:11,378 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2020-10-29 12:18:11,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 12:18:11,379 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 112 [2020-10-29 12:18:11,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:11,380 INFO L225 Difference]: With dead ends: 100 [2020-10-29 12:18:11,380 INFO L226 Difference]: Without dead ends: 56 [2020-10-29 12:18:11,381 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 12:18:11,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-29 12:18:11,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-29 12:18:11,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 12:18:11,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-29 12:18:11,388 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 112 [2020-10-29 12:18:11,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:11,389 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-29 12:18:11,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 12:18:11,389 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-29 12:18:11,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-29 12:18:11,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:11,390 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 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 12:18:11,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 12:18:11,391 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:11,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:11,391 INFO L82 PathProgramCache]: Analyzing trace with hash 487500277, now seen corresponding path program 14 times [2020-10-29 12:18:11,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:11,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104915927] [2020-10-29 12:18:11,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:11,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:11,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:11,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:11,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:16,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:16,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 12:18:16,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:18:16,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 12:18:16,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:16,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:16,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:18:16,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:18:16,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 12:18:16,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:16,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:16,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:16,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:16,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:16,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:16,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:18:16,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:16,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:16,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:16,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:16,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:16,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:16,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:16,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:16,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:16,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 12:18:16,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:16,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 12:18:16,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:16,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:16,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:18:16,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:16,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 12:18:16,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:16,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 12:18:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:16,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:16,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:16,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:16,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 12:18:16,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:16,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-29 12:18:16,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:16,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:16,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:18:16,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:16,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 12:18:16,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:16,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 12:18:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:16,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:16,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:17,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:17,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 12:18:17,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:17,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-29 12:18:17,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:17,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:17,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:18:17,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:17,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 12:18:17,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:17,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 588 proven. 1176 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-29 12:18:17,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104915927] [2020-10-29 12:18:17,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:17,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 12:18:17,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135061587] [2020-10-29 12:18:17,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 12:18:17,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:17,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 12:18:17,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:18:17,120 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 18 states. [2020-10-29 12:18:17,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:17,824 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-10-29 12:18:17,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:18:17,824 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 118 [2020-10-29 12:18:17,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:17,825 INFO L225 Difference]: With dead ends: 104 [2020-10-29 12:18:17,825 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 12:18:17,826 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 12:18:17,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 12:18:17,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-29 12:18:17,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 12:18:17,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-29 12:18:17,843 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 118 [2020-10-29 12:18:17,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:17,843 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-29 12:18:17,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 12:18:17,844 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-29 12:18:17,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 12:18:17,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:17,847 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 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 12:18:17,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 12:18:17,847 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:17,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:17,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1139535405, now seen corresponding path program 15 times [2020-10-29 12:18:17,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:17,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613394879] [2020-10-29 12:18:17,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:17,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:17,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:17,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:17,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:22,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:22,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 12:18:22,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:18:22,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 12:18:22,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:22,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:22,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:18:22,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:18:22,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 12:18:22,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:22,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:22,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:22,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:22,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:22,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:22,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:18:22,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:22,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:22,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:22,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:22,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:22,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:22,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:22,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:23,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:23,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:18:23,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:23,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-29 12:18:23,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:23,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:18:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 12:18:23,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:23,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 12:18:23,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:23,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:23,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:23,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:23,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:18:23,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:23,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-29 12:18:23,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:23,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:23,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:18:23,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:23,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 12:18:23,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:23,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 12:18:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:23,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:23,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:23,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:23,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 12:18:23,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:23,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-29 12:18:23,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:23,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:23,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:18:23,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:23,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 12:18:23,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:23,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 675 proven. 1350 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-29 12:18:23,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613394879] [2020-10-29 12:18:23,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:23,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 12:18:23,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066394374] [2020-10-29 12:18:23,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 12:18:23,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:23,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 12:18:23,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:18:23,601 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 19 states. [2020-10-29 12:18:24,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:24,418 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-10-29 12:18:24,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:18:24,419 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 124 [2020-10-29 12:18:24,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:24,420 INFO L225 Difference]: With dead ends: 108 [2020-10-29 12:18:24,420 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 12:18:24,422 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 12:18:24,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 12:18:24,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-29 12:18:24,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-29 12:18:24,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-29 12:18:24,428 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 124 [2020-10-29 12:18:24,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:24,428 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-29 12:18:24,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 12:18:24,429 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-29 12:18:24,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-29 12:18:24,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:24,430 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 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 12:18:24,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 12:18:24,431 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:24,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:24,431 INFO L82 PathProgramCache]: Analyzing trace with hash -497624271, now seen corresponding path program 16 times [2020-10-29 12:18:24,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:24,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550997771] [2020-10-29 12:18:24,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:24,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:24,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:24,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:24,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:29,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:29,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 12:18:29,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:18:29,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 12:18:29,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:29,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:29,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:18:29,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:18:29,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 12:18:29,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:29,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:29,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:29,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:29,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:29,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:29,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:18:29,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:29,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:29,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:29,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:29,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:29,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:29,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:29,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:29,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:29,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 12:18:29,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:29,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 12:18:29,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:29,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:29,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:18:29,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:29,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 12:18:29,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:29,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 12:18:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:29,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:29,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:30,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:30,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 12:18:30,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:30,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-29 12:18:30,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:30,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:30,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:18:30,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:30,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 12:18:30,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:30,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 12:18:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:30,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:30,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:30,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:30,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 12:18:30,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:30,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-29 12:18:30,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:30,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:30,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:18:30,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:30,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 12:18:30,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 768 proven. 1536 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-29 12:18:30,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550997771] [2020-10-29 12:18:30,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:30,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 12:18:30,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938895424] [2020-10-29 12:18:30,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 12:18:30,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:30,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 12:18:30,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:18:30,277 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 20 states. [2020-10-29 12:18:31,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:31,165 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2020-10-29 12:18:31,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 12:18:31,166 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 130 [2020-10-29 12:18:31,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:31,167 INFO L225 Difference]: With dead ends: 112 [2020-10-29 12:18:31,167 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 12:18:31,169 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 12:18:31,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 12:18:31,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-29 12:18:31,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-29 12:18:31,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-29 12:18:31,175 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 130 [2020-10-29 12:18:31,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:31,176 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-29 12:18:31,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 12:18:31,176 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-29 12:18:31,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-29 12:18:31,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:31,177 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 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 12:18:31,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 12:18:31,178 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:31,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:31,178 INFO L82 PathProgramCache]: Analyzing trace with hash -670603761, now seen corresponding path program 17 times [2020-10-29 12:18:31,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:31,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006433146] [2020-10-29 12:18:31,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:31,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:31,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:31,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:31,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:36,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:36,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 12:18:36,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:18:36,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 12:18:36,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:36,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:36,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:18:36,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-29 12:18:36,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 12:18:36,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:36,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:36,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:36,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:36,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:36,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:36,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:18:36,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:36,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:36,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:36,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:36,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:36,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:36,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:36,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:36,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:36,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:36,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 12:18:36,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:36,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-29 12:18:36,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:36,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:36,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:18:36,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:36,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 12:18:36,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:36,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 12:18:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:36,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:36,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:36,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 12:18:36,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:36,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-29 12:18:36,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:36,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:36,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:18:36,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:36,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 12:18:36,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:36,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-29 12:18:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:36,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:36,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:37,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:37,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 12:18:37,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:37,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-29 12:18:37,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:37,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:37,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:18:37,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:37,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 12:18:37,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:37,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 867 proven. 1734 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-29 12:18:37,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006433146] [2020-10-29 12:18:37,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:37,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 12:18:37,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320131218] [2020-10-29 12:18:37,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 12:18:37,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:37,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 12:18:37,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 12:18:37,108 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 21 states. [2020-10-29 12:18:38,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:38,068 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-10-29 12:18:38,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 12:18:38,068 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 136 [2020-10-29 12:18:38,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:38,070 INFO L225 Difference]: With dead ends: 116 [2020-10-29 12:18:38,070 INFO L226 Difference]: Without dead ends: 64 [2020-10-29 12:18:38,071 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 12:18:38,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-29 12:18:38,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-29 12:18:38,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 12:18:38,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-29 12:18:38,079 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 136 [2020-10-29 12:18:38,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:38,079 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-29 12:18:38,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 12:18:38,079 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-29 12:18:38,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-29 12:18:38,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:38,081 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 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 12:18:38,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 12:18:38,081 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:38,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:38,081 INFO L82 PathProgramCache]: Analyzing trace with hash 435032685, now seen corresponding path program 18 times [2020-10-29 12:18:38,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:38,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891677046] [2020-10-29 12:18:38,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:38,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:38,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:38,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:38,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:43,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:43,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 12:18:43,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:18:43,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 12:18:43,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:43,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:43,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:18:43,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-29 12:18:43,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:18:43,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:18:43,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:43,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:43,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:43,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:43,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:43,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:18:43,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:43,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:43,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:43,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:43,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:43,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:43,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:43,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:43,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:43,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:43,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 12:18:43,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:43,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-29 12:18:43,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:43,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:43,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:18:43,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:43,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:18:43,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:43,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 12:18:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:43,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:43,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:43,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 12:18:43,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:43,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-29 12:18:43,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:43,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:43,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:18:43,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:43,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:18:43,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:43,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 12:18:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:43,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:43,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:44,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:44,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 12:18:44,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:44,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-29 12:18:44,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:44,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:44,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:18:44,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:44,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:18:44,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:44,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3039 backedges. 972 proven. 1944 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-29 12:18:44,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891677046] [2020-10-29 12:18:44,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:44,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 12:18:44,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129715725] [2020-10-29 12:18:44,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 12:18:44,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:44,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 12:18:44,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 12:18:44,086 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 22 states. [2020-10-29 12:18:45,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:45,099 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2020-10-29 12:18:45,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 12:18:45,099 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 142 [2020-10-29 12:18:45,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:45,100 INFO L225 Difference]: With dead ends: 120 [2020-10-29 12:18:45,100 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 12:18:45,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 12:18:45,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 12:18:45,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-29 12:18:45,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 12:18:45,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-29 12:18:45,119 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 142 [2020-10-29 12:18:45,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:45,119 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-29 12:18:45,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 12:18:45,119 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-29 12:18:45,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-29 12:18:45,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:45,121 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 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 12:18:45,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 12:18:45,122 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:45,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:45,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1332428875, now seen corresponding path program 19 times [2020-10-29 12:18:45,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:45,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56212915] [2020-10-29 12:18:45,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:45,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:45,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:45,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:45,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:50,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:50,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-29 12:18:50,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:18:50,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-29 12:18:50,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:50,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:50,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 12:18:50,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:18:50,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 12:18:50,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:50,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:50,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:50,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:50,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:50,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:50,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:18:50,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:50,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:50,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:50,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:50,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:50,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:50,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:50,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:50,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:50,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:18:50,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:50,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 12:18:50,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:50,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:50,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 12:18:50,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:50,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 12:18:50,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:50,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 12:18:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:50,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:50,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:50,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:50,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:18:50,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:50,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-29 12:18:50,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:50,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:50,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 12:18:50,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:50,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 12:18:50,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:50,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 12:18:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:50,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:50,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:51,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:51,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:18:51,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:51,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-29 12:18:51,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:51,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:51,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 12:18:51,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:18:51,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 12:18:51,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:51,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3378 backedges. 1083 proven. 2166 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-29 12:18:51,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56212915] [2020-10-29 12:18:51,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:51,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 12:18:51,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785830421] [2020-10-29 12:18:51,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 12:18:51,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:51,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 12:18:51,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:18:51,254 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 23 states. [2020-10-29 12:18:52,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:52,296 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2020-10-29 12:18:52,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 12:18:52,296 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 148 [2020-10-29 12:18:52,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:52,297 INFO L225 Difference]: With dead ends: 123 [2020-10-29 12:18:52,297 INFO L226 Difference]: Without dead ends: 67 [2020-10-29 12:18:52,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 12:18:52,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-29 12:18:52,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-29 12:18:52,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 12:18:52,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-29 12:18:52,306 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 148 [2020-10-29 12:18:52,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:52,306 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-29 12:18:52,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 12:18:52,307 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-29 12:18:52,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-29 12:18:52,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:52,309 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 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 12:18:52,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 12:18:52,309 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:52,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:52,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1065922647, now seen corresponding path program 20 times [2020-10-29 12:18:52,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:52,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060190899] [2020-10-29 12:18:52,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:52,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:52,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:52,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:52,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 12:18:52,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:52,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 516 [2020-10-29 12:18:52,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:52,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:52,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:18:52,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:18:52,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:18:52,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:52,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:52,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:52,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:52,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:52,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:52,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:18:52,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:52,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:52,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:52,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:52,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:52,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:52,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:52,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:52,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:52,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:18:52,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:52,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:18:52,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:52,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:52,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:52,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:52,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:52,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:52,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:18:52,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:52,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:52,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:52,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:18:52,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:52,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:18:52,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:52,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:52,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:52,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:52,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:52,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:52,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 12:18:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:52,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:52,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:52,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:18:52,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:52,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:18:52,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:52,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:52,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:52,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:18:52,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:52,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:18:52,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060190899] [2020-10-29 12:18:52,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:18:52,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 12:18:52,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021471862] [2020-10-29 12:18:52,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 12:18:52,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:52,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 12:18:52,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:18:52,974 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 4 states. [2020-10-29 12:18:53,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:53,057 INFO L93 Difference]: Finished difference Result 122 states and 127 transitions. [2020-10-29 12:18:53,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 12:18:53,058 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-10-29 12:18:53,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:53,059 INFO L225 Difference]: With dead ends: 122 [2020-10-29 12:18:53,060 INFO L226 Difference]: Without dead ends: 69 [2020-10-29 12:18:53,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:18:53,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-29 12:18:53,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2020-10-29 12:18:53,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-29 12:18:53,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-10-29 12:18:53,066 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 154 [2020-10-29 12:18:53,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:53,067 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-10-29 12:18:53,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 12:18:53,067 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-10-29 12:18:53,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-29 12:18:53,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:53,068 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 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] [2020-10-29 12:18:53,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 12:18:53,069 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:53,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:53,069 INFO L82 PathProgramCache]: Analyzing trace with hash 527572263, now seen corresponding path program 1 times [2020-10-29 12:18:53,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:53,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968786503] [2020-10-29 12:18:53,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:53,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:53,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:54,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:54,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-29 12:18:54,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:54,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1166 [2020-10-29 12:18:54,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:54,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:54,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:18:54,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:18:54,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 12:18:54,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:54,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:54,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:54,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:54,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:54,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:54,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:18:54,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:54,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:54,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:54,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:54,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:54,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:54,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:54,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:54,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:54,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:18:54,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:54,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:18:54,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:54,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:54,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:54,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:54,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:54,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:54,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:18:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:54,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:54,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:54,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:18:54,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:54,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:18:54,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:54,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:54,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:54,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:54,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:54,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:54,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-29 12:18:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:54,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:54,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:54,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:18:54,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:54,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:18:54,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:54,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:54,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:54,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:18:54,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:54,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3736 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:18:54,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968786503] [2020-10-29 12:18:54,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:54,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 12:18:54,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468586781] [2020-10-29 12:18:54,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:18:54,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:54,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:18:54,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:18:54,396 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 5 states. [2020-10-29 12:18:54,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:54,494 INFO L93 Difference]: Finished difference Result 124 states and 129 transitions. [2020-10-29 12:18:54,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:18:54,498 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-29 12:18:54,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:54,499 INFO L225 Difference]: With dead ends: 124 [2020-10-29 12:18:54,500 INFO L226 Difference]: Without dead ends: 71 [2020-10-29 12:18:54,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:18:54,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-29 12:18:54,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-10-29 12:18:54,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-29 12:18:54,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-10-29 12:18:54,506 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 156 [2020-10-29 12:18:54,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:54,506 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-10-29 12:18:54,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:18:54,507 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-10-29 12:18:54,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-29 12:18:54,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:54,508 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 3, 3, 3, 3, 2, 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 12:18:54,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 12:18:54,508 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:54,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:54,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1427143899, now seen corresponding path program 2 times [2020-10-29 12:18:54,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:54,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57834348] [2020-10-29 12:18:54,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:54,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:54,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:56,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:56,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 12:18:56,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:18:56,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2033 [2020-10-29 12:18:56,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:56,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:56,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:18:56,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:18:56,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:18:56,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:56,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:56,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:56,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:56,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:56,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:56,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:18:56,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:56,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:56,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:56,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:56,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:56,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:56,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:18:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:56,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:56,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:56,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:18:56,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:56,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:18:56,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:56,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:56,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:56,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:56,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:56,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:56,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:18:56,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:56,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:56,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:56,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:18:56,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:56,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:18:56,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:56,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:56,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:56,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:56,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:56,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:56,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-29 12:18:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:56,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:56,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:56,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:18:56,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:56,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:18:56,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:56,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:56,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:56,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:18:56,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:56,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:56,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3739 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:18:56,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57834348] [2020-10-29 12:18:56,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:56,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 12:18:56,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53677344] [2020-10-29 12:18:56,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:18:56,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:56,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:18:56,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:18:56,704 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 6 states. [2020-10-29 12:18:56,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:56,811 INFO L93 Difference]: Finished difference Result 126 states and 131 transitions. [2020-10-29 12:18:56,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:18:56,813 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-10-29 12:18:56,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:56,814 INFO L225 Difference]: With dead ends: 126 [2020-10-29 12:18:56,815 INFO L226 Difference]: Without dead ends: 73 [2020-10-29 12:18:56,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:18:56,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-29 12:18:56,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2020-10-29 12:18:56,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-29 12:18:56,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2020-10-29 12:18:56,823 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 158 [2020-10-29 12:18:56,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:56,824 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2020-10-29 12:18:56,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:18:56,824 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2020-10-29 12:18:56,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 12:18:56,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:56,826 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 3, 3, 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 12:18:56,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 12:18:56,826 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:56,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:56,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1286300067, now seen corresponding path program 3 times [2020-10-29 12:18:56,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:56,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167796296] [2020-10-29 12:18:56,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:56,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:56,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:00,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:00,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 12:19:00,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:00,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3450 [2020-10-29 12:19:00,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:00,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:00,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:19:00,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:19:00,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:19:00,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:00,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:00,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:00,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:00,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:00,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:00,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:00,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:00,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:00,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:00,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:00,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:00,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:00,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:00,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:00,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:00,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:00,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:00,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:19:00,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:00,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:00,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:00,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:00,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:00,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:00,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:19:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:00,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:00,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:00,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:00,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:00,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:19:00,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:00,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:00,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:00,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:00,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:00,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:00,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-29 12:19:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:00,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:00,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:00,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:00,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:00,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:19:00,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:00,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:00,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:00,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:19:00,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:00,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:00,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:19:00,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167796296] [2020-10-29 12:19:00,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:00,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 12:19:00,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369517140] [2020-10-29 12:19:00,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 12:19:00,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:00,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 12:19:00,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:19:00,451 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 7 states. [2020-10-29 12:19:00,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:00,573 INFO L93 Difference]: Finished difference Result 128 states and 133 transitions. [2020-10-29 12:19:00,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 12:19:00,573 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-10-29 12:19:00,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:00,574 INFO L225 Difference]: With dead ends: 128 [2020-10-29 12:19:00,574 INFO L226 Difference]: Without dead ends: 75 [2020-10-29 12:19:00,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:19:00,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-29 12:19:00,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2020-10-29 12:19:00,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-29 12:19:00,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-10-29 12:19:00,581 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 160 [2020-10-29 12:19:00,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:00,582 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-10-29 12:19:00,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 12:19:00,582 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-10-29 12:19:00,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-29 12:19:00,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:00,583 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 4, 4, 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 12:19:00,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 12:19:00,584 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:00,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:00,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1860802721, now seen corresponding path program 4 times [2020-10-29 12:19:00,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:00,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66949160] [2020-10-29 12:19:00,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:00,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:00,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:04,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:04,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 12:19:04,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:04,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3943 [2020-10-29 12:19:04,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:04,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:04,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:19:04,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:19:04,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:19:04,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:04,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:04,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:04,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:04,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:04,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:04,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:04,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:04,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:04,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:04,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:04,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:04,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:04,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:04,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:04,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:04,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:04,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:04,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:19:04,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:04,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:04,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:04,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:04,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:04,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:04,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:19:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:04,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:04,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:04,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:04,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:04,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:19:04,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:04,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:04,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:04,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:04,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:04,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:04,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 12:19:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:04,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:04,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:04,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:04,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:04,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:19:04,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:04,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:04,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:04,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:19:04,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:04,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:04,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3751 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:19:04,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66949160] [2020-10-29 12:19:04,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:04,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 12:19:04,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916791447] [2020-10-29 12:19:04,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 12:19:04,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:04,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 12:19:04,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:19:04,692 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 8 states. [2020-10-29 12:19:04,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:04,823 INFO L93 Difference]: Finished difference Result 130 states and 135 transitions. [2020-10-29 12:19:04,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:19:04,824 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 162 [2020-10-29 12:19:04,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:04,825 INFO L225 Difference]: With dead ends: 130 [2020-10-29 12:19:04,825 INFO L226 Difference]: Without dead ends: 77 [2020-10-29 12:19:04,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:19:04,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-29 12:19:04,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-10-29 12:19:04,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-29 12:19:04,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-10-29 12:19:04,833 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 162 [2020-10-29 12:19:04,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:04,833 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-10-29 12:19:04,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 12:19:04,834 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-10-29 12:19:04,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-29 12:19:04,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:04,837 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 5, 5, 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 12:19:04,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 12:19:04,838 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:04,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:04,839 INFO L82 PathProgramCache]: Analyzing trace with hash -92927969, now seen corresponding path program 5 times [2020-10-29 12:19:04,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:04,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430767815] [2020-10-29 12:19:04,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:04,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:04,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:09,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:09,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 12:19:09,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:09,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4768 [2020-10-29 12:19:09,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:09,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:09,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:19:09,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:19:09,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:19:09,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:09,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:09,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:09,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:09,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:09,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:09,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:09,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:09,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:09,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:09,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:09,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:09,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:09,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:09,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:09,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:09,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:09,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:09,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:19:09,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:09,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:09,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:09,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:09,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:09,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:09,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:19:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:09,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:09,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:09,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:09,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:09,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:19:09,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:09,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:09,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:09,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:09,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:09,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:09,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-29 12:19:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:09,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:09,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:09,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:09,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:09,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:19:09,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:09,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:09,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:09,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:19:09,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:09,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:09,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3760 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:19:09,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430767815] [2020-10-29 12:19:09,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:09,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 12:19:09,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714249592] [2020-10-29 12:19:09,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:19:09,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:09,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:19:09,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:19:09,775 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 9 states. [2020-10-29 12:19:09,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:09,926 INFO L93 Difference]: Finished difference Result 132 states and 137 transitions. [2020-10-29 12:19:09,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 12:19:09,926 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 164 [2020-10-29 12:19:09,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:09,927 INFO L225 Difference]: With dead ends: 132 [2020-10-29 12:19:09,927 INFO L226 Difference]: Without dead ends: 79 [2020-10-29 12:19:09,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:19:09,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-29 12:19:09,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2020-10-29 12:19:09,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-29 12:19:09,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2020-10-29 12:19:09,934 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 164 [2020-10-29 12:19:09,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:09,935 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2020-10-29 12:19:09,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:19:09,935 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2020-10-29 12:19:09,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-29 12:19:09,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:09,936 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 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 12:19:09,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 12:19:09,936 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:09,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:09,937 INFO L82 PathProgramCache]: Analyzing trace with hash -727412707, now seen corresponding path program 6 times [2020-10-29 12:19:09,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:09,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865136121] [2020-10-29 12:19:09,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:09,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:09,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:15,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:15,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 12:19:15,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:15,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-29 12:19:15,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:15,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:15,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:19:15,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:19:15,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:19:15,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:15,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:15,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:15,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:15,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:15,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:15,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:15,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:15,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:15,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:15,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:15,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:15,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:15,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:15,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:15,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:15,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:15,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:15,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:19:15,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:15,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:15,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:15,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:15,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:15,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:15,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:19:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:15,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:15,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:15,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:15,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:15,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:19:15,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:15,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:15,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:15,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:15,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:15,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:15,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-29 12:19:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:15,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:15,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:15,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:15,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:15,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 12:19:15,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:15,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:15,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:15,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:19:15,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:15,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:15,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3771 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:19:15,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865136121] [2020-10-29 12:19:15,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:15,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 12:19:15,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923178584] [2020-10-29 12:19:15,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:19:15,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:15,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:19:15,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:19:15,256 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand 10 states. [2020-10-29 12:19:15,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:15,405 INFO L93 Difference]: Finished difference Result 134 states and 139 transitions. [2020-10-29 12:19:15,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 12:19:15,406 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2020-10-29 12:19:15,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:15,407 INFO L225 Difference]: With dead ends: 134 [2020-10-29 12:19:15,407 INFO L226 Difference]: Without dead ends: 81 [2020-10-29 12:19:15,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:19:15,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-29 12:19:15,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2020-10-29 12:19:15,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-29 12:19:15,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-10-29 12:19:15,415 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 166 [2020-10-29 12:19:15,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:15,415 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-10-29 12:19:15,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:19:15,415 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-10-29 12:19:15,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-29 12:19:15,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:15,416 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 7, 7, 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 12:19:15,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 12:19:15,417 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:15,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:15,417 INFO L82 PathProgramCache]: Analyzing trace with hash -581889893, now seen corresponding path program 7 times [2020-10-29 12:19:15,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:15,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104426505] [2020-10-29 12:19:15,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:15,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:15,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:20,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:20,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-29 12:19:20,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:20,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-29 12:19:20,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:20,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:20,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:19:20,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:19:20,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:19:20,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:20,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:20,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:20,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:20,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:20,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:20,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:20,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:20,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:20,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:20,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:20,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:20,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:20,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:20,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:20,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:20,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:20,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:20,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:19:20,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:20,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:20,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:20,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:20,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:20,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:20,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:19:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:20,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:20,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:20,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:20,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:20,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:19:20,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:20,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:20,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:20,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:20,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:20,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:20,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-29 12:19:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:20,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:20,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:20,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:20,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:20,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 12:19:20,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:20,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:20,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:20,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:19:20,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:20,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:20,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:19:20,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104426505] [2020-10-29 12:19:20,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:20,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 12:19:20,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76183558] [2020-10-29 12:19:20,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:19:20,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:20,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:19:20,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:19:20,732 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand 11 states. [2020-10-29 12:19:20,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:20,905 INFO L93 Difference]: Finished difference Result 136 states and 141 transitions. [2020-10-29 12:19:20,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 12:19:20,905 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 168 [2020-10-29 12:19:20,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:20,906 INFO L225 Difference]: With dead ends: 136 [2020-10-29 12:19:20,906 INFO L226 Difference]: Without dead ends: 83 [2020-10-29 12:19:20,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:19:20,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-29 12:19:20,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2020-10-29 12:19:20,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-29 12:19:20,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2020-10-29 12:19:20,914 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 168 [2020-10-29 12:19:20,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:20,914 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2020-10-29 12:19:20,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:19:20,915 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2020-10-29 12:19:20,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-29 12:19:20,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:20,916 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 8, 8, 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 12:19:20,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 12:19:20,916 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:20,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:20,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1826580889, now seen corresponding path program 8 times [2020-10-29 12:19:20,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:20,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563173905] [2020-10-29 12:19:20,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:20,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:20,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:25,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:25,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-29 12:19:25,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:25,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-29 12:19:25,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:25,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:25,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:19:25,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:19:25,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:19:25,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:26,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:26,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:26,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:26,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:26,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:26,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:26,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:26,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:26,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:26,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:26,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:26,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:26,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:26,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:26,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:26,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:26,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:26,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:19:26,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:26,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:26,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:26,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:26,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:26,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:26,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:19:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:26,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:26,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:26,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:26,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:26,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:19:26,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:26,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:26,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:26,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:26,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:26,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:26,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-29 12:19:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:26,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:26,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:26,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:26,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:26,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 12:19:26,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:26,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:26,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:26,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:19:26,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:26,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:26,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3799 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:19:26,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563173905] [2020-10-29 12:19:26,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:26,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 12:19:26,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024538448] [2020-10-29 12:19:26,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:19:26,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:26,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:19:26,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:19:26,224 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand 12 states. [2020-10-29 12:19:26,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:26,404 INFO L93 Difference]: Finished difference Result 138 states and 143 transitions. [2020-10-29 12:19:26,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 12:19:26,404 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 170 [2020-10-29 12:19:26,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:26,406 INFO L225 Difference]: With dead ends: 138 [2020-10-29 12:19:26,406 INFO L226 Difference]: Without dead ends: 85 [2020-10-29 12:19:26,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:19:26,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-29 12:19:26,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2020-10-29 12:19:26,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-29 12:19:26,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-10-29 12:19:26,417 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 170 [2020-10-29 12:19:26,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:26,418 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-10-29 12:19:26,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:19:26,418 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-10-29 12:19:26,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-29 12:19:26,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:26,420 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 9, 9, 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 12:19:26,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 12:19:26,420 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:26,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:26,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1379629847, now seen corresponding path program 9 times [2020-10-29 12:19:26,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:26,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793708897] [2020-10-29 12:19:26,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:26,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:26,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:31,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:31,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-29 12:19:31,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:31,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 12:19:31,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:31,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:31,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:19:31,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:19:31,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:19:31,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:31,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:31,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:31,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:31,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:31,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:31,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:19:31,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:31,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:31,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:31,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:31,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:31,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:31,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:31,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:31,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:31,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:31,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:31,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:19:31,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:31,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:31,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:31,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:31,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:31,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:31,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:19:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:31,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:31,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:31,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:31,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:31,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:19:31,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:31,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:31,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:31,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:31,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:31,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:31,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-29 12:19:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:31,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:31,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:31,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:31,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:31,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:19:31,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:31,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:31,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:31,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:19:31,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:31,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:31,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3816 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:19:31,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793708897] [2020-10-29 12:19:31,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:31,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 12:19:31,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527328911] [2020-10-29 12:19:31,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:19:31,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:31,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:19:31,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:19:31,660 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 13 states. [2020-10-29 12:19:31,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:31,848 INFO L93 Difference]: Finished difference Result 140 states and 145 transitions. [2020-10-29 12:19:31,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 12:19:31,849 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 172 [2020-10-29 12:19:31,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:31,850 INFO L225 Difference]: With dead ends: 140 [2020-10-29 12:19:31,850 INFO L226 Difference]: Without dead ends: 87 [2020-10-29 12:19:31,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:19:31,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-29 12:19:31,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2020-10-29 12:19:31,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-29 12:19:31,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-10-29 12:19:31,858 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 172 [2020-10-29 12:19:31,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:31,859 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-10-29 12:19:31,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:19:31,859 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-10-29 12:19:31,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-29 12:19:31,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:31,861 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 10, 10, 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 12:19:31,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 12:19:31,861 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:31,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:31,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1356408085, now seen corresponding path program 10 times [2020-10-29 12:19:31,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:31,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595623457] [2020-10-29 12:19:31,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:31,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:31,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:36,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:36,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-29 12:19:36,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:36,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5102 [2020-10-29 12:19:36,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:36,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:36,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:19:36,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:19:36,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:19:36,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:37,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:37,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:37,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:37,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:37,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:37,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:37,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:37,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:37,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:37,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:37,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:37,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:37,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:37,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:37,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:37,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:37,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:37,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:19:37,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:37,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:37,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:37,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:37,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:37,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:37,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:19:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:37,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:37,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:37,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:37,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:37,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:19:37,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:37,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:37,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:37,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:37,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:37,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:37,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 12:19:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:37,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:37,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:37,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:37,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:37,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:19:37,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:37,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:37,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:37,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:19:37,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:37,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:37,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3835 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:19:37,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595623457] [2020-10-29 12:19:37,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:37,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 12:19:37,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080410073] [2020-10-29 12:19:37,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:19:37,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:37,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:19:37,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:19:37,230 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 14 states. [2020-10-29 12:19:37,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:37,367 INFO L93 Difference]: Finished difference Result 142 states and 147 transitions. [2020-10-29 12:19:37,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:19:37,368 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 174 [2020-10-29 12:19:37,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:37,369 INFO L225 Difference]: With dead ends: 142 [2020-10-29 12:19:37,369 INFO L226 Difference]: Without dead ends: 89 [2020-10-29 12:19:37,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:19:37,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-29 12:19:37,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2020-10-29 12:19:37,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-29 12:19:37,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2020-10-29 12:19:37,378 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 174 [2020-10-29 12:19:37,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:37,378 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2020-10-29 12:19:37,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:19:37,378 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2020-10-29 12:19:37,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-29 12:19:37,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:37,380 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 11, 11, 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 12:19:37,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 12:19:37,380 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:37,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:37,380 INFO L82 PathProgramCache]: Analyzing trace with hash 515131283, now seen corresponding path program 11 times [2020-10-29 12:19:37,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:37,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999410196] [2020-10-29 12:19:37,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:37,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:37,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:42,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:42,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-29 12:19:42,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:42,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 12:19:42,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:42,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:42,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:19:42,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:19:42,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 12:19:42,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:42,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:42,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:42,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:42,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:42,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:42,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:19:42,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:42,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:42,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:42,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:42,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:42,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:42,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:42,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:42,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:42,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:42,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:42,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:19:42,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:42,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:42,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:42,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:42,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:42,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:42,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:19:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:42,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:42,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:42,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:42,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:42,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:19:42,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:42,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:42,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:42,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:42,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:42,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:42,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-29 12:19:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:42,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:42,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:42,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:42,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:42,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 12:19:42,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:42,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:42,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:42,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:19:42,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:42,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:42,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:19:42,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999410196] [2020-10-29 12:19:42,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:42,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 12:19:42,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570894627] [2020-10-29 12:19:42,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 12:19:42,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:42,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 12:19:42,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:19:42,726 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand 15 states. [2020-10-29 12:19:42,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:42,865 INFO L93 Difference]: Finished difference Result 144 states and 149 transitions. [2020-10-29 12:19:42,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 12:19:42,866 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 176 [2020-10-29 12:19:42,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:42,867 INFO L225 Difference]: With dead ends: 144 [2020-10-29 12:19:42,867 INFO L226 Difference]: Without dead ends: 91 [2020-10-29 12:19:42,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:19:42,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-29 12:19:42,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2020-10-29 12:19:42,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-29 12:19:42,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2020-10-29 12:19:42,882 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 176 [2020-10-29 12:19:42,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:42,882 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2020-10-29 12:19:42,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 12:19:42,883 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2020-10-29 12:19:42,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-29 12:19:42,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:42,887 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 12, 12, 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 12:19:42,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 12:19:42,888 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:42,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:42,888 INFO L82 PathProgramCache]: Analyzing trace with hash -498023791, now seen corresponding path program 12 times [2020-10-29 12:19:42,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:42,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299161777] [2020-10-29 12:19:42,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:42,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:42,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:48,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:48,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-29 12:19:48,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:48,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5180 [2020-10-29 12:19:48,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:48,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:48,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:19:48,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:19:48,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:19:48,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:48,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:48,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:48,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:48,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:48,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:48,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:19:48,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:48,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:48,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:48,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:48,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:48,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:48,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:48,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:48,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:48,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:48,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:48,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:19:48,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:48,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:48,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:48,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:48,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:48,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:48,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:19:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:48,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:48,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:48,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:48,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:48,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:19:48,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:48,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:48,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:48,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:48,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:48,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:48,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-29 12:19:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:48,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:48,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:48,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:48,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:48,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:19:48,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:48,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:48,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:48,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:19:48,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:48,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:48,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3879 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:19:48,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299161777] [2020-10-29 12:19:48,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:48,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 12:19:48,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105480703] [2020-10-29 12:19:48,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 12:19:48,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:48,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 12:19:48,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:19:48,379 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand 16 states. [2020-10-29 12:19:48,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:48,585 INFO L93 Difference]: Finished difference Result 146 states and 151 transitions. [2020-10-29 12:19:48,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:19:48,586 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 178 [2020-10-29 12:19:48,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:48,587 INFO L225 Difference]: With dead ends: 146 [2020-10-29 12:19:48,587 INFO L226 Difference]: Without dead ends: 93 [2020-10-29 12:19:48,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:19:48,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-29 12:19:48,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2020-10-29 12:19:48,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-29 12:19:48,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2020-10-29 12:19:48,595 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 178 [2020-10-29 12:19:48,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:48,595 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2020-10-29 12:19:48,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 12:19:48,596 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2020-10-29 12:19:48,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-29 12:19:48,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:48,597 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 13, 13, 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 12:19:48,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 12:19:48,598 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:48,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:48,598 INFO L82 PathProgramCache]: Analyzing trace with hash 817526287, now seen corresponding path program 13 times [2020-10-29 12:19:48,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:48,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851479855] [2020-10-29 12:19:48,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:48,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:48,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:53,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:53,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 12:19:53,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:53,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 12:19:53,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:53,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:53,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:19:53,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:19:53,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:19:53,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:53,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:53,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:53,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:53,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:53,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:53,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:53,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:53,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:53,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:53,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:53,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:53,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:53,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:53,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:53,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:53,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:53,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:53,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:19:53,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:53,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:53,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:53,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:53,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:53,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:53,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:19:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:53,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:53,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:53,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:53,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:53,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:19:53,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:53,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:53,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:53,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:53,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:53,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:53,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-29 12:19:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:53,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:53,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:53,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:53,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:53,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:19:53,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:53,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:53,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:53,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:19:53,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:53,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:53,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3904 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:19:53,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851479855] [2020-10-29 12:19:53,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:53,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 12:19:53,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315235627] [2020-10-29 12:19:53,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 12:19:53,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:53,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 12:19:53,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:19:53,944 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand 17 states. [2020-10-29 12:19:54,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:54,189 INFO L93 Difference]: Finished difference Result 148 states and 153 transitions. [2020-10-29 12:19:54,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 12:19:54,190 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 180 [2020-10-29 12:19:54,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:54,191 INFO L225 Difference]: With dead ends: 148 [2020-10-29 12:19:54,191 INFO L226 Difference]: Without dead ends: 95 [2020-10-29 12:19:54,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:19:54,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-29 12:19:54,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2020-10-29 12:19:54,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-29 12:19:54,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2020-10-29 12:19:54,198 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 180 [2020-10-29 12:19:54,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:54,199 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2020-10-29 12:19:54,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 12:19:54,212 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2020-10-29 12:19:54,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-29 12:19:54,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:54,213 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 14, 14, 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 12:19:54,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 12:19:54,213 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:54,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:54,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1954201075, now seen corresponding path program 14 times [2020-10-29 12:19:54,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:54,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870075803] [2020-10-29 12:19:54,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:54,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:54,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:59,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:59,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 12:19:59,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:59,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5148 [2020-10-29 12:19:59,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:59,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:59,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:19:59,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:19:59,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 12:19:59,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:59,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:59,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:59,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:59,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:59,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:59,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:59,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:59,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:59,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:59,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:59,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:59,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:59,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:19:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:59,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:59,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:59,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:59,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:59,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:19:59,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:59,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:59,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:59,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:59,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:59,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:59,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:19:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:59,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:59,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:59,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:59,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:59,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:19:59,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:59,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:59,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:59,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:59,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:59,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:59,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-29 12:19:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:59,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:59,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:59,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:59,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:59,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:19:59,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:59,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:59,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:59,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:19:59,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:59,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:59,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3931 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:19:59,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870075803] [2020-10-29 12:19:59,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:19:59,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 12:19:59,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448007411] [2020-10-29 12:19:59,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 12:19:59,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:59,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 12:19:59,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:19:59,718 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand 18 states. [2020-10-29 12:19:59,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:59,976 INFO L93 Difference]: Finished difference Result 150 states and 155 transitions. [2020-10-29 12:19:59,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:19:59,977 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 182 [2020-10-29 12:19:59,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:59,978 INFO L225 Difference]: With dead ends: 150 [2020-10-29 12:19:59,978 INFO L226 Difference]: Without dead ends: 97 [2020-10-29 12:19:59,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:19:59,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-29 12:19:59,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2020-10-29 12:19:59,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-29 12:19:59,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 100 transitions. [2020-10-29 12:19:59,985 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 100 transitions. Word has length 182 [2020-10-29 12:19:59,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:59,986 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 100 transitions. [2020-10-29 12:19:59,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 12:19:59,986 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 100 transitions. [2020-10-29 12:19:59,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-29 12:19:59,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:59,987 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 15, 15, 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 12:19:59,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 12:19:59,987 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:59,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:59,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1590494859, now seen corresponding path program 15 times [2020-10-29 12:19:59,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:59,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025680154] [2020-10-29 12:19:59,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:00,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:00,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:05,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:05,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-29 12:20:05,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:20:05,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5165 [2020-10-29 12:20:05,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:05,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:20:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:20:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 12:20:05,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:05,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:05,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:05,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:05,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:05,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:05,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:20:05,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:05,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:05,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:05,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:05,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:05,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:05,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:20:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:05,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:05,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:05,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:20:05,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:05,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:20:05,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:05,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:05,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:05,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:05,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:05,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:05,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:20:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:05,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:05,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:05,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:20:05,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:05,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:20:05,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:05,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:05,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:05,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:05,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:05,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:05,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-29 12:20:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:05,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:05,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:05,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:20:05,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:05,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:20:05,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:05,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:05,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:05,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:20:05,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:05,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:05,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:20:05,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025680154] [2020-10-29 12:20:05,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:20:05,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 12:20:05,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855874267] [2020-10-29 12:20:05,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 12:20:05,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:05,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 12:20:05,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:20:05,519 INFO L87 Difference]: Start difference. First operand 96 states and 100 transitions. Second operand 19 states. [2020-10-29 12:20:05,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:05,724 INFO L93 Difference]: Finished difference Result 152 states and 157 transitions. [2020-10-29 12:20:05,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:20:05,725 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 184 [2020-10-29 12:20:05,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:05,726 INFO L225 Difference]: With dead ends: 152 [2020-10-29 12:20:05,726 INFO L226 Difference]: Without dead ends: 99 [2020-10-29 12:20:05,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:20:05,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-29 12:20:05,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2020-10-29 12:20:05,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-29 12:20:05,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 102 transitions. [2020-10-29 12:20:05,735 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 102 transitions. Word has length 184 [2020-10-29 12:20:05,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:05,735 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 102 transitions. [2020-10-29 12:20:05,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 12:20:05,736 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 102 transitions. [2020-10-29 12:20:05,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-29 12:20:05,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:05,737 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 16, 16, 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 12:20:05,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 12:20:05,737 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:05,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:05,737 INFO L82 PathProgramCache]: Analyzing trace with hash 2134221705, now seen corresponding path program 16 times [2020-10-29 12:20:05,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:05,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387500260] [2020-10-29 12:20:05,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:05,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:05,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:11,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:11,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-29 12:20:11,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:20:11,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5381 [2020-10-29 12:20:11,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:11,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:11,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:20:11,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:20:11,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 12:20:11,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:11,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:11,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:11,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:11,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:11,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:11,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:20:11,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:11,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:11,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:11,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:11,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:11,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:11,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:20:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:11,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:11,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:11,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:20:11,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:11,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:20:11,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:11,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:11,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:11,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:11,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:11,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:11,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:20:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:11,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:11,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:11,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:20:11,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:11,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:20:11,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:11,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:11,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:11,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:11,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:11,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:11,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-29 12:20:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:11,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:11,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:11,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:20:11,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:11,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 12:20:11,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:11,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:11,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:11,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:20:11,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:11,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:11,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3991 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:20:11,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387500260] [2020-10-29 12:20:11,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:20:11,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 12:20:11,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515785302] [2020-10-29 12:20:11,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 12:20:11,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:11,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 12:20:11,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:20:11,543 INFO L87 Difference]: Start difference. First operand 98 states and 102 transitions. Second operand 20 states. [2020-10-29 12:20:11,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:11,817 INFO L93 Difference]: Finished difference Result 154 states and 159 transitions. [2020-10-29 12:20:11,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 12:20:11,818 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 186 [2020-10-29 12:20:11,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:11,819 INFO L225 Difference]: With dead ends: 154 [2020-10-29 12:20:11,819 INFO L226 Difference]: Without dead ends: 101 [2020-10-29 12:20:11,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:20:11,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-29 12:20:11,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2020-10-29 12:20:11,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-29 12:20:11,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2020-10-29 12:20:11,825 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 186 [2020-10-29 12:20:11,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:11,825 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 104 transitions. [2020-10-29 12:20:11,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 12:20:11,825 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 104 transitions. [2020-10-29 12:20:11,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-29 12:20:11,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:11,827 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 17, 17, 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 12:20:11,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 12:20:11,827 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:11,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:11,827 INFO L82 PathProgramCache]: Analyzing trace with hash 669710599, now seen corresponding path program 17 times [2020-10-29 12:20:11,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:11,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283537521] [2020-10-29 12:20:11,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:11,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:11,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:17,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:17,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-29 12:20:17,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:20:17,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5209 [2020-10-29 12:20:17,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:17,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:17,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:20:17,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:20:17,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 12:20:17,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:17,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:17,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:17,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:17,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:17,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:17,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:20:17,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:17,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:17,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:17,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:17,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:17,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:17,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:20:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:17,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:17,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:17,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:20:17,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:17,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:20:17,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:17,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:17,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:17,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:17,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:17,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:17,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:20:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:17,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:17,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:17,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:20:17,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:17,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:20:17,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:17,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:17,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:17,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:17,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:17,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:17,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 12:20:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:17,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:17,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:17,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:20:17,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:17,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:20:17,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:17,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:17,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:17,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:20:17,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:17,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:17,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4024 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:20:17,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283537521] [2020-10-29 12:20:17,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:20:17,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 12:20:17,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417179346] [2020-10-29 12:20:17,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 12:20:17,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:17,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 12:20:17,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 12:20:17,462 INFO L87 Difference]: Start difference. First operand 100 states and 104 transitions. Second operand 21 states. [2020-10-29 12:20:17,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:17,751 INFO L93 Difference]: Finished difference Result 156 states and 161 transitions. [2020-10-29 12:20:17,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 12:20:17,751 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 188 [2020-10-29 12:20:17,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:17,753 INFO L225 Difference]: With dead ends: 156 [2020-10-29 12:20:17,753 INFO L226 Difference]: Without dead ends: 103 [2020-10-29 12:20:17,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 12:20:17,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-29 12:20:17,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2020-10-29 12:20:17,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-29 12:20:17,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2020-10-29 12:20:17,780 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 188 [2020-10-29 12:20:17,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:17,780 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2020-10-29 12:20:17,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 12:20:17,780 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2020-10-29 12:20:17,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-29 12:20:17,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:17,781 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 18, 18, 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 12:20:17,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 12:20:17,782 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:17,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:17,782 INFO L82 PathProgramCache]: Analyzing trace with hash 2023810821, now seen corresponding path program 18 times [2020-10-29 12:20:17,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:17,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381933278] [2020-10-29 12:20:17,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:17,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:17,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:22,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:22,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-29 12:20:22,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:20:22,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 12:20:22,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:22,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:22,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:20:22,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 12:20:22,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:20:22,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:23,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:23,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:23,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:23,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:23,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:23,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:20:23,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:23,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:23,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:23,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:23,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:23,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:23,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:20:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:23,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:23,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:23,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:20:23,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:23,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:20:23,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:23,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:23,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:23,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:23,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:23,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:23,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:20:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:23,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:23,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:23,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:20:23,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:23,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:20:23,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:23,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:23,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:23,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:23,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:23,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:23,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 12:20:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:23,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:23,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:23,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:20:23,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:23,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:20:23,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:23,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:23,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:23,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:20:23,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:23,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:23,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4059 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-29 12:20:23,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381933278] [2020-10-29 12:20:23,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:20:23,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 12:20:23,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587208349] [2020-10-29 12:20:23,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 12:20:23,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:23,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 12:20:23,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 12:20:23,230 INFO L87 Difference]: Start difference. First operand 102 states and 106 transitions. Second operand 22 states. [2020-10-29 12:20:23,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:23,514 INFO L93 Difference]: Finished difference Result 157 states and 162 transitions. [2020-10-29 12:20:23,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 12:20:23,515 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 190 [2020-10-29 12:20:23,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:23,516 INFO L225 Difference]: With dead ends: 157 [2020-10-29 12:20:23,516 INFO L226 Difference]: Without dead ends: 104 [2020-10-29 12:20:23,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 12:20:23,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-29 12:20:23,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-29 12:20:23,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-29 12:20:23,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2020-10-29 12:20:23,523 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 190 [2020-10-29 12:20:23,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:23,524 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2020-10-29 12:20:23,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 12:20:23,524 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2020-10-29 12:20:23,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-29 12:20:23,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:23,525 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 19, 19, 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 12:20:23,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 12:20:23,525 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:23,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:23,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1939033475, now seen corresponding path program 19 times [2020-10-29 12:20:23,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:23,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709028799] [2020-10-29 12:20:23,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:23,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:25,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking...