/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/sep40-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:30:48,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:30:48,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:30:48,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:30:48,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:30:48,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:30:48,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:30:48,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:30:48,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:30:48,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:30:48,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:30:48,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:30:48,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:30:48,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:30:48,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:30:48,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:30:48,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:30:48,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:30:48,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:30:48,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:30:48,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:30:48,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:30:48,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:30:48,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:30:48,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:30:48,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:30:48,151 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:30:48,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:30:48,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:30:48,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:30:48,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:30:48,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:30:48,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:30:48,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:30:48,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:30:48,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:30:48,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:30:48,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:30:48,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:30:48,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:30:48,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:30:48,172 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 [2020-10-28 17:30:48,222 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:30:48,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:30:48,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:30:48,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:30:48,224 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:30:48,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:30:48,225 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:30:48,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:30:48,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:30:48,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:30:48,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:30:48,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:30:48,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:30:48,227 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:30:48,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:30:48,227 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:30:48,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:30:48,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:30:48,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:30:48,228 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:30:48,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:30:48,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:30:48,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:30:48,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:30:48,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:30:48,230 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:30:48,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:30:48,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:30:48,230 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:30:48,231 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:30:48,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:30:48,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:30:48,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:30:48,610 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:30:48,610 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:30:48,611 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep40-1.i [2020-10-28 17:30:48,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f19c8d6ef/646795b3e2c04114ac710d053f33d4e0/FLAGf1c2511f4 [2020-10-28 17:30:49,264 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:30:49,264 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sep40-1.i [2020-10-28 17:30:49,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f19c8d6ef/646795b3e2c04114ac710d053f33d4e0/FLAGf1c2511f4 [2020-10-28 17:30:49,647 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f19c8d6ef/646795b3e2c04114ac710d053f33d4e0 [2020-10-28 17:30:49,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:30:49,658 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:30:49,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:30:49,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:30:49,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:30:49,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:30:49" (1/1) ... [2020-10-28 17:30:49,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@768493df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:30:49, skipping insertion in model container [2020-10-28 17:30:49,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:30:49" (1/1) ... [2020-10-28 17:30:49,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:30:49,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:30:49,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:30:49,878 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:30:49,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:30:49,919 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:30:49,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:30:49 WrapperNode [2020-10-28 17:30:49,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:30:49,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:30:49,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:30:49,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:30:49,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:30:49" (1/1) ... [2020-10-28 17:30:49,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:30:49" (1/1) ... [2020-10-28 17:30:49,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:30:49" (1/1) ... [2020-10-28 17:30:49,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:30:49" (1/1) ... [2020-10-28 17:30:49,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:30:49" (1/1) ... [2020-10-28 17:30:49,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:30:49" (1/1) ... [2020-10-28 17:30:49,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:30:49" (1/1) ... [2020-10-28 17:30:49,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:30:49,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:30:49,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:30:49,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:30:49,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:30:49" (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 [2020-10-28 17:30:50,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:30:50,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:30:50,049 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:30:50,050 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2020-10-28 17:30:50,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:30:50,051 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:30:50,051 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:30:50,051 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 17:30:50,051 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 17:30:50,051 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:30:50,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:30:50,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 17:30:50,053 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2020-10-28 17:30:50,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:30:50,053 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:30:50,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:30:50,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:30:50,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:30:50,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:30:50,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:30:50,610 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:30:50,611 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 17:30:50,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:30:50 BoogieIcfgContainer [2020-10-28 17:30:50,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:30:50,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:30:50,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:30:50,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:30:50,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:30:49" (1/3) ... [2020-10-28 17:30:50,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1919f24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:30:50, skipping insertion in model container [2020-10-28 17:30:50,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:30:49" (2/3) ... [2020-10-28 17:30:50,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1919f24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:30:50, skipping insertion in model container [2020-10-28 17:30:50,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:30:50" (3/3) ... [2020-10-28 17:30:50,622 INFO L111 eAbstractionObserver]: Analyzing ICFG sep40-1.i [2020-10-28 17:30:50,636 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:30:50,641 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:30:50,657 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:30:50,685 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:30:50,686 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:30:50,686 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:30:50,686 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:30:50,686 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:30:50,687 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:30:50,687 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:30:50,687 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:30:50,706 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-28 17:30:50,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 17:30:50,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:50,714 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] [2020-10-28 17:30:50,715 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:50,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:50,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1788891338, now seen corresponding path program 1 times [2020-10-28 17:30:50,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:50,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134958702] [2020-10-28 17:30:50,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:50,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:50,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:51,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:51,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:51,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:51,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:52,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:52,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:30:52,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:30:52,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1421 [2020-10-28 17:30:52,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:52,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:52,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:52,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:30:52,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:52,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:30:52,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:52,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:52,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:52,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:52,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:52,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:30:52,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:52,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:52,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:52,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:52,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:52,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:30:52,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 17:30:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:52,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:52,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:52,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:30:52,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:52,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:30:52,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:52,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:52,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:52,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:30:52,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:52,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:30:52,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 17:30:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:52,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:52,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:52,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:52,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:30:52,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:52,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:30:52,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:52,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:52,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:52,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:30:52,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:52,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:30:52,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:30:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:52,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:52,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:52,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:52,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:30:52,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:52,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:30:52,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:52,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:52,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:52,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:30:52,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:52,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:30:52,463 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 17:30:52,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134958702] [2020-10-28 17:30:52,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:52,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-10-28 17:30:52,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469169350] [2020-10-28 17:30:52,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 17:30:52,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:52,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 17:30:52,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 17:30:52,489 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-10-28 17:30:52,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:52,580 INFO L93 Difference]: Finished difference Result 62 states and 84 transitions. [2020-10-28 17:30:52,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 17:30:52,582 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-28 17:30:52,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:52,590 INFO L225 Difference]: With dead ends: 62 [2020-10-28 17:30:52,591 INFO L226 Difference]: Without dead ends: 29 [2020-10-28 17:30:52,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 17:30:52,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-28 17:30:52,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-28 17:30:52,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-28 17:30:52,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2020-10-28 17:30:52,637 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 34 [2020-10-28 17:30:52,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:52,638 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2020-10-28 17:30:52,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 17:30:52,638 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-10-28 17:30:52,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 17:30:52,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:52,641 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] [2020-10-28 17:30:52,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:30:52,641 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:52,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:52,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1899018129, now seen corresponding path program 1 times [2020-10-28 17:30:52,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:52,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580253936] [2020-10-28 17:30:52,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:52,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:52,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:52,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:52,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:52,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:52,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:53,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:54,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:54,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:30:54,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:30:54,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1554 [2020-10-28 17:30:54,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:54,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:54,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:30:54,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:30:54,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:30:54,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:30:54,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:54,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:54,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:54,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:54,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:54,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:30:54,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:54,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:54,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:54,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:54,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:54,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:30:54,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 17:30:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:54,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:54,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:54,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:54,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:30:54,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:54,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:30:54,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:54,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:54,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:54,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:30:54,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:54,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:30:54,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 17:30:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:54,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:54,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:54,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:54,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:30:54,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:54,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:30:54,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:54,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:54,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:54,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:30:54,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:54,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:54,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:30:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:54,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:54,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:54,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:54,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:30:54,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:54,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:30:54,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:54,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:54,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:54,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:30:54,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:54,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:54,340 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 17:30:54,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580253936] [2020-10-28 17:30:54,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:30:54,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:30:54,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129046717] [2020-10-28 17:30:54,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:30:54,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:54,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:30:54,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:30:54,347 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 4 states. [2020-10-28 17:30:54,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:54,463 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-28 17:30:54,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:30:54,464 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-28 17:30:54,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:54,465 INFO L225 Difference]: With dead ends: 52 [2020-10-28 17:30:54,465 INFO L226 Difference]: Without dead ends: 31 [2020-10-28 17:30:54,467 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 [2020-10-28 17:30:54,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-28 17:30:54,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-10-28 17:30:54,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-28 17:30:54,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-28 17:30:54,476 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 34 [2020-10-28 17:30:54,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:54,476 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-28 17:30:54,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:30:54,476 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-28 17:30:54,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 17:30:54,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:54,478 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] [2020-10-28 17:30:54,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:30:54,478 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:54,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:54,479 INFO L82 PathProgramCache]: Analyzing trace with hash 261170739, now seen corresponding path program 1 times [2020-10-28 17:30:54,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:54,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452408479] [2020-10-28 17:30:54,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:54,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:54,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:54,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:54,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:54,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:54,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:56,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:56,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:30:56,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:30:56,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2050 [2020-10-28 17:30:56,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:56,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:56,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:30:56,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:30:56,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 17:30:56,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:30:56,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:56,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:56,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:56,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:56,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:56,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:30:56,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:56,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:56,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:56,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:56,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:56,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:56,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:30:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:56,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:56,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:56,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:56,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:30:56,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:56,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:30:56,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:56,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:56,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:56,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:30:56,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:56,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:30:56,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 17:30:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:56,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:56,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:56,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:56,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:30:56,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:56,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:30:56,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:56,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:56,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:56,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:30:56,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:56,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:30:56,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 17:30:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:56,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:56,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:56,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:56,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:30:56,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:56,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:30:56,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:56,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:56,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:56,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:30:56,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:56,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:56,677 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 17:30:56,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452408479] [2020-10-28 17:30:56,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:30:56,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 17:30:56,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557245650] [2020-10-28 17:30:56,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:30:56,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:56,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:30:56,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:30:56,682 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2020-10-28 17:30:56,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:56,843 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2020-10-28 17:30:56,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 17:30:56,843 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-28 17:30:56,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:56,844 INFO L225 Difference]: With dead ends: 54 [2020-10-28 17:30:56,845 INFO L226 Difference]: Without dead ends: 33 [2020-10-28 17:30:56,845 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 [2020-10-28 17:30:56,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-28 17:30:56,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-28 17:30:56,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-28 17:30:56,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2020-10-28 17:30:56,860 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 36 [2020-10-28 17:30:56,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:56,860 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2020-10-28 17:30:56,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:30:56,860 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2020-10-28 17:30:56,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 17:30:56,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:56,864 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 17:30:56,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:30:56,865 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:56,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:56,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1752140715, now seen corresponding path program 2 times [2020-10-28 17:30:56,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:56,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951427010] [2020-10-28 17:30:56,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:56,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:56,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:56,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:56,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:57,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:57,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:59,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:59,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 17:30:59,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:30:59,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2738 [2020-10-28 17:30:59,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:59,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:59,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:30:59,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 17:30:59,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:30:59,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:59,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:30:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:59,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:59,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:59,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:30:59,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:59,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:30:59,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:59,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:59,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:59,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:59,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:59,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:59,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:30:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:59,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:59,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:59,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:59,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:30:59,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:59,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:30:59,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:59,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:59,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:59,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:59,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:59,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:30:59,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 17:30:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:59,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:59,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:59,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:59,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:30:59,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:30:59,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:30:59,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:59,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:59,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:30:59,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:30:59,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:30:59,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:59,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:30:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:59,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:59,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:30:59,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:30:59,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:30:59,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:30:59,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:30:59,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:30:59,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:30:59,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:30:59,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:30:59,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:30:59,731 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 17:30:59,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951427010] [2020-10-28 17:30:59,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:30:59,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:30:59,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243183525] [2020-10-28 17:30:59,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:30:59,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:30:59,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:30:59,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:30:59,735 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 4 states. [2020-10-28 17:30:59,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:30:59,858 INFO L93 Difference]: Finished difference Result 55 states and 68 transitions. [2020-10-28 17:30:59,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:30:59,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-28 17:30:59,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:30:59,861 INFO L225 Difference]: With dead ends: 55 [2020-10-28 17:30:59,861 INFO L226 Difference]: Without dead ends: 35 [2020-10-28 17:30:59,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:30:59,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-28 17:30:59,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-10-28 17:30:59,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-28 17:30:59,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-10-28 17:30:59,873 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 38 [2020-10-28 17:30:59,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:30:59,877 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-10-28 17:30:59,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:30:59,877 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-10-28 17:30:59,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 17:30:59,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:30:59,879 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-28 17:30:59,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:30:59,881 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:30:59,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:30:59,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1741039266, now seen corresponding path program 1 times [2020-10-28 17:30:59,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:30:59,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624949416] [2020-10-28 17:30:59,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:30:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:30:59,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:59,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:59,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:30:59,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:00,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:04,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:04,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:04,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-28 17:31:04,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:31:04,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 17:31:04,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:04,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:04,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:31:04,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 17:31:04,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:31:04,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:04,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:04,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:04,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:04,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:04,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:04,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:31:04,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:04,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:04,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:04,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:04,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:04,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:04,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:31:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:04,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:04,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:04,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:04,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:31:04,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:04,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:31:04,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:04,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:04,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:04,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:04,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:04,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:04,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 17:31:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:04,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:04,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:05,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:05,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:31:05,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:05,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:31:05,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:05,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:05,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:05,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:05,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:05,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:05,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 17:31:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:05,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:05,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:05,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:31:05,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:05,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:31:05,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:05,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:05,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:31:05,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:31:05,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:31:05,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:05,093 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 17:31:05,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624949416] [2020-10-28 17:31:05,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:05,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 17:31:05,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128480545] [2020-10-28 17:31:05,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:31:05,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:05,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:31:05,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:31:05,097 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 5 states. [2020-10-28 17:31:05,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:05,261 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2020-10-28 17:31:05,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 17:31:05,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-10-28 17:31:05,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:05,263 INFO L225 Difference]: With dead ends: 59 [2020-10-28 17:31:05,263 INFO L226 Difference]: Without dead ends: 38 [2020-10-28 17:31:05,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:31:05,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-28 17:31:05,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-10-28 17:31:05,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-28 17:31:05,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-10-28 17:31:05,277 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 47 [2020-10-28 17:31:05,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:05,278 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-10-28 17:31:05,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:31:05,278 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-10-28 17:31:05,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 17:31:05,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:05,279 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2020-10-28 17:31:05,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:31:05,279 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:05,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:05,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1287598475, now seen corresponding path program 2 times [2020-10-28 17:31:05,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:05,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411878289] [2020-10-28 17:31:05,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:05,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:05,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:05,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:05,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:06,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:10,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:10,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 17:31:10,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:31:10,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 17:31:10,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:10,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:10,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:31:10,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 17:31:10,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:31:10,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:10,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:10,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:10,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:10,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:10,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:10,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:31:10,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:10,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:10,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:10,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:10,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:10,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:10,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:31:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:10,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:10,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:10,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:10,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:31:10,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:10,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 17:31:10,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:10,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:10,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:10,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:10,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:10,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 17:31:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:10,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:10,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:10,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:10,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:31:10,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:10,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 17:31:10,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:10,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:10,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:10,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:10,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:10,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:10,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:31:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:10,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:10,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:10,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:10,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:31:10,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:10,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 17:31:10,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:10,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:10,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:10,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:31:10,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:10,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:10,533 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-28 17:31:10,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411878289] [2020-10-28 17:31:10,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:31:10,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 17:31:10,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542410142] [2020-10-28 17:31:10,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 17:31:10,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:10,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 17:31:10,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 17:31:10,537 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 4 states. [2020-10-28 17:31:10,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:10,625 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2020-10-28 17:31:10,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 17:31:10,625 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-28 17:31:10,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:10,626 INFO L225 Difference]: With dead ends: 57 [2020-10-28 17:31:10,627 INFO L226 Difference]: Without dead ends: 38 [2020-10-28 17:31:10,629 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 [2020-10-28 17:31:10,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-28 17:31:10,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-28 17:31:10,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-28 17:31:10,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2020-10-28 17:31:10,637 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 56 [2020-10-28 17:31:10,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:10,639 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2020-10-28 17:31:10,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 17:31:10,639 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2020-10-28 17:31:10,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 17:31:10,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:10,640 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1] [2020-10-28 17:31:10,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:31:10,641 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:10,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:10,641 INFO L82 PathProgramCache]: Analyzing trace with hash 625564083, now seen corresponding path program 1 times [2020-10-28 17:31:10,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:10,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410284611] [2020-10-28 17:31:10,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:10,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:10,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:10,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:10,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:12,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:15,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:15,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 17:31:15,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:31:15,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 17:31:15,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:15,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:15,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:31:15,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-28 17:31:15,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:31:15,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:15,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:15,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:15,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:15,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:15,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:15,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:31:15,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:15,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:15,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:15,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:15,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:15,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:15,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:31:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:15,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:15,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:15,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:15,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:31:15,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:15,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 17:31:15,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:15,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:15,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:15,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:15,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:15,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:15,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 17:31:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:15,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:15,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:15,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:15,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:31:15,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:15,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 17:31:15,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:15,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:15,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:15,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:15,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:15,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:15,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 17:31:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:15,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:15,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:15,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:31:15,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:15,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 17:31:15,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:15,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:15,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:31:15,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:31:15,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:31:15,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:15,873 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-28 17:31:15,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410284611] [2020-10-28 17:31:15,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:15,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 17:31:15,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473197329] [2020-10-28 17:31:15,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:31:15,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:15,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:31:15,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:31:15,878 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand 6 states. [2020-10-28 17:31:16,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:16,064 INFO L93 Difference]: Finished difference Result 67 states and 83 transitions. [2020-10-28 17:31:16,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:31:16,065 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-28 17:31:16,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:16,066 INFO L225 Difference]: With dead ends: 67 [2020-10-28 17:31:16,066 INFO L226 Difference]: Without dead ends: 42 [2020-10-28 17:31:16,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:31:16,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-28 17:31:16,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-10-28 17:31:16,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-28 17:31:16,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2020-10-28 17:31:16,078 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 58 [2020-10-28 17:31:16,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:16,078 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2020-10-28 17:31:16,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:31:16,079 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2020-10-28 17:31:16,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 17:31:16,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:16,082 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1] [2020-10-28 17:31:16,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:31:16,083 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:16,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:16,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1192189504, now seen corresponding path program 2 times [2020-10-28 17:31:16,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:16,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508624851] [2020-10-28 17:31:16,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:16,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:16,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:16,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:16,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:19,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:21,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:21,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 17:31:21,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:31:21,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 17:31:21,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:21,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:21,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:31:21,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:31:21,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:31:21,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:21,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:21,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:21,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:21,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:21,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:21,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:31:21,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:21,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:21,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:21,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:21,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:21,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:21,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 17:31:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:21,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:21,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:21,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:21,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:31:21,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:21,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 17:31:21,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:21,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:21,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:21,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:31:21,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:21,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:21,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:31:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:21,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:21,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:21,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:21,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:31:21,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:21,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 17:31:21,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:21,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:21,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:21,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:31:21,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:21,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:21,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 17:31:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:21,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:21,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:21,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:21,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:31:21,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:21,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 17:31:21,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:21,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:21,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:21,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:31:21,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:21,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:21,406 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-10-28 17:31:21,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508624851] [2020-10-28 17:31:21,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:21,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 17:31:21,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703146195] [2020-10-28 17:31:21,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:31:21,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:21,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:31:21,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:31:21,408 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 6 states. [2020-10-28 17:31:21,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:21,499 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2020-10-28 17:31:21,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:31:21,499 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-10-28 17:31:21,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:21,500 INFO L225 Difference]: With dead ends: 72 [2020-10-28 17:31:21,500 INFO L226 Difference]: Without dead ends: 43 [2020-10-28 17:31:21,501 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 [2020-10-28 17:31:21,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-28 17:31:21,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-10-28 17:31:21,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-28 17:31:21,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-10-28 17:31:21,508 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 67 [2020-10-28 17:31:21,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:21,508 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-10-28 17:31:21,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:31:21,508 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-10-28 17:31:21,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 17:31:21,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:21,509 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1] [2020-10-28 17:31:21,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 17:31:21,510 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:21,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:21,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1158672546, now seen corresponding path program 3 times [2020-10-28 17:31:21,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:21,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764750548] [2020-10-28 17:31:21,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:21,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:21,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:21,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:21,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:25,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:26,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:26,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 17:31:26,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:31:26,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 17:31:26,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:26,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:26,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:31:26,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-28 17:31:26,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 17:31:26,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:26,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:26,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:26,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:26,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:26,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:26,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:26,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:31:26,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:26,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:26,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:26,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:26,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:26,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:26,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:31:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:26,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:26,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:26,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:26,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:31:26,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:26,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 17:31:26,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:26,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:26,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:26,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:26,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:26,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:26,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 17:31:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:26,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:26,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:26,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:26,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:31:26,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:26,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 17:31:26,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:26,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:26,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:26,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:26,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:26,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:26,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:31:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:26,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:26,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:26,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:26,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:31:26,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:26,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 17:31:26,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:26,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:26,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:26,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:31:26,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:26,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:26,806 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-28 17:31:26,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764750548] [2020-10-28 17:31:26,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:26,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 17:31:26,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389667971] [2020-10-28 17:31:26,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 17:31:26,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:26,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 17:31:26,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 17:31:26,815 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-10-28 17:31:26,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:26,900 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2020-10-28 17:31:26,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 17:31:26,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-28 17:31:26,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:26,902 INFO L225 Difference]: With dead ends: 67 [2020-10-28 17:31:26,903 INFO L226 Difference]: Without dead ends: 45 [2020-10-28 17:31:26,903 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 [2020-10-28 17:31:26,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-28 17:31:26,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2020-10-28 17:31:26,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-28 17:31:26,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-10-28 17:31:26,916 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 69 [2020-10-28 17:31:26,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:26,916 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-10-28 17:31:26,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 17:31:26,917 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-10-28 17:31:26,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 17:31:26,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:26,918 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 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] [2020-10-28 17:31:26,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 17:31:26,920 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:26,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:26,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1763720416, now seen corresponding path program 4 times [2020-10-28 17:31:26,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:26,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065860100] [2020-10-28 17:31:26,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:26,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:26,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:26,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:27,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:29,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:31,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:31,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 17:31:31,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:31:31,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 17:31:31,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:31,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:31,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:31:31,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 17:31:31,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:31:31,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:32,120 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-10-28 17:31:32,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:32,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:32,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:32,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:32,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:32,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:31:32,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:32,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:32,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:32,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:32,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:32,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 17:31:32,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:31:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:32,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:32,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:32,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:31:32,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:32,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 17:31:32,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:32,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:32,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:31:32,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:31:32,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:31:32,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:32,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 17:31:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:32,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:32,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:32,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:32,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:31:32,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:32,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 17:31:32,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:32,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:32,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:32,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:31:32,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:32,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:32,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 17:31:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:32,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:32,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:32,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:32,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 17:31:32,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:32,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 17:31:32,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:32,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:32,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:32,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:31:32,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:32,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:32,355 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-28 17:31:32,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065860100] [2020-10-28 17:31:32,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:32,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 17:31:32,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002695852] [2020-10-28 17:31:32,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:31:32,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:32,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:31:32,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:31:32,357 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 7 states. [2020-10-28 17:31:32,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:32,574 INFO L93 Difference]: Finished difference Result 79 states and 97 transitions. [2020-10-28 17:31:32,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:31:32,575 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2020-10-28 17:31:32,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:32,576 INFO L225 Difference]: With dead ends: 79 [2020-10-28 17:31:32,576 INFO L226 Difference]: Without dead ends: 49 [2020-10-28 17:31:32,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:31:32,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-28 17:31:32,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-10-28 17:31:32,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-28 17:31:32,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-10-28 17:31:32,583 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 71 [2020-10-28 17:31:32,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:32,583 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-10-28 17:31:32,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:31:32,583 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-10-28 17:31:32,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 17:31:32,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:32,584 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 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] [2020-10-28 17:31:32,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 17:31:32,584 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:32,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:32,585 INFO L82 PathProgramCache]: Analyzing trace with hash -522389965, now seen corresponding path program 5 times [2020-10-28 17:31:32,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:32,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240879502] [2020-10-28 17:31:32,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:32,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:32,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:32,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:32,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:35,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:37,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:37,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 17:31:37,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:31:37,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 17:31:37,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:37,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:37,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:31:37,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 17:31:37,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:31:37,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:37,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:37,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:37,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:37,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:37,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:37,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:31:37,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:37,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:37,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:37,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:37,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:37,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:37,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:31:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:37,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:37,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:37,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:31:37,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:37,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 17:31:37,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:37,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:37,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:31:37,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:31:37,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:31:37,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:37,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:31:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:37,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:37,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:37,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:37,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:31:37,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:37,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 17:31:37,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:37,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:37,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:37,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:31:37,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:37,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:37,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:31:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:37,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:37,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:37,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:37,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:31:37,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:37,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 17:31:37,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:37,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:37,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:37,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:31:37,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:37,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:37,957 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-28 17:31:37,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240879502] [2020-10-28 17:31:37,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:37,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 17:31:37,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464609176] [2020-10-28 17:31:37,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:31:37,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:37,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:31:37,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:31:37,960 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 8 states. [2020-10-28 17:31:38,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:38,263 INFO L93 Difference]: Finished difference Result 85 states and 105 transitions. [2020-10-28 17:31:38,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:31:38,263 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-10-28 17:31:38,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:38,264 INFO L225 Difference]: With dead ends: 85 [2020-10-28 17:31:38,264 INFO L226 Difference]: Without dead ends: 52 [2020-10-28 17:31:38,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:31:38,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-28 17:31:38,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-10-28 17:31:38,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-28 17:31:38,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2020-10-28 17:31:38,271 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 80 [2020-10-28 17:31:38,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:38,272 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2020-10-28 17:31:38,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:31:38,272 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2020-10-28 17:31:38,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 17:31:38,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:38,273 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 3, 3, 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] [2020-10-28 17:31:38,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 17:31:38,273 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:38,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:38,274 INFO L82 PathProgramCache]: Analyzing trace with hash 2398528, now seen corresponding path program 6 times [2020-10-28 17:31:38,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:38,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166441571] [2020-10-28 17:31:38,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:38,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:38,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:38,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:38,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:43,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:43,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 17:31:43,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:31:43,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 17:31:43,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:43,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:43,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:31:43,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:31:43,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:31:43,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:43,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:43,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:43,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:43,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:43,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:43,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:31:43,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:43,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:43,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:43,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:43,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:43,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:43,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 17:31:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:43,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:43,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:43,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:43,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:31:43,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:43,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 17:31:43,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:43,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:43,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:43,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 17:31:43,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:43,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:43,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:31:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:43,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:43,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:43,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:43,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:31:43,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:43,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 17:31:43,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:43,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:43,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:43,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 17:31:43,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:43,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:43,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:31:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:43,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:43,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:43,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:43,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:31:43,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:43,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 17:31:43,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:43,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:43,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:43,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 17:31:43,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:43,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:43,658 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2020-10-28 17:31:43,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166441571] [2020-10-28 17:31:43,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:43,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 17:31:43,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972592708] [2020-10-28 17:31:43,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:31:43,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:43,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:31:43,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:31:43,660 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 7 states. [2020-10-28 17:31:43,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:43,783 INFO L93 Difference]: Finished difference Result 90 states and 108 transitions. [2020-10-28 17:31:43,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:31:43,784 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 89 [2020-10-28 17:31:43,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:43,785 INFO L225 Difference]: With dead ends: 90 [2020-10-28 17:31:43,785 INFO L226 Difference]: Without dead ends: 53 [2020-10-28 17:31:43,786 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 [2020-10-28 17:31:43,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-28 17:31:43,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-10-28 17:31:43,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-28 17:31:43,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2020-10-28 17:31:43,792 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 89 [2020-10-28 17:31:43,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:43,793 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2020-10-28 17:31:43,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:31:43,793 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2020-10-28 17:31:43,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-28 17:31:43,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:43,794 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 4, 4, 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] [2020-10-28 17:31:43,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 17:31:43,794 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:43,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:43,795 INFO L82 PathProgramCache]: Analyzing trace with hash -775889826, now seen corresponding path program 7 times [2020-10-28 17:31:43,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:43,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372070423] [2020-10-28 17:31:43,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:43,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:43,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:43,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:43,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:48,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:48,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 17:31:48,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:31:48,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 17:31:48,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:48,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:48,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:31:48,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:31:48,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:31:48,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:48,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:48,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:48,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:48,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:48,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:48,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:31:48,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:48,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:48,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:48,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:48,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:48,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:31:48,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 17:31:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:48,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:48,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:49,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:49,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:31:49,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:49,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 17:31:49,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:49,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:49,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:49,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 17:31:49,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:49,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:49,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 17:31:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:49,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:49,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:49,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:49,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:31:49,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:49,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 17:31:49,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:49,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:49,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:49,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 17:31:49,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:49,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:49,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 17:31:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:49,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:49,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:49,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:49,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:31:49,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:49,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 17:31:49,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:49,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:49,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:49,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 17:31:49,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:49,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:49,217 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2020-10-28 17:31:49,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372070423] [2020-10-28 17:31:49,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:49,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 17:31:49,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288768030] [2020-10-28 17:31:49,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:31:49,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:49,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:31:49,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:31:49,219 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 8 states. [2020-10-28 17:31:49,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:49,376 INFO L93 Difference]: Finished difference Result 92 states and 110 transitions. [2020-10-28 17:31:49,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:31:49,376 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 91 [2020-10-28 17:31:49,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:49,378 INFO L225 Difference]: With dead ends: 92 [2020-10-28 17:31:49,378 INFO L226 Difference]: Without dead ends: 55 [2020-10-28 17:31:49,379 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 [2020-10-28 17:31:49,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-28 17:31:49,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-10-28 17:31:49,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-28 17:31:49,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-10-28 17:31:49,386 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 91 [2020-10-28 17:31:49,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:49,386 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-10-28 17:31:49,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:31:49,386 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-10-28 17:31:49,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-28 17:31:49,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:49,387 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 5, 5, 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] [2020-10-28 17:31:49,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 17:31:49,388 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:49,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:49,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1386688516, now seen corresponding path program 8 times [2020-10-28 17:31:49,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:49,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701892482] [2020-10-28 17:31:49,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:49,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:49,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:49,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:49,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:54,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:54,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 17:31:54,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:31:54,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 17:31:54,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:54,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:54,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:31:54,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 17:31:54,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:31:54,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:54,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:31:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:54,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:54,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:54,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:31:54,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:31:54,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:31:54,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:54,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:54,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:54,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:54,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:54,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:31:54,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:31:54,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:54,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:54,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:54,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:54,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:31:54,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:54,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 17:31:54,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:54,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:54,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:54,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:54,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:54,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:54,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:31:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:54,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:54,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:54,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:54,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:31:54,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:54,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 17:31:54,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:54,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:54,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:54,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:31:54,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:54,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:54,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:31:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:54,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:54,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:54,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:31:54,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:31:54,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:31:54,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 17:31:54,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:31:54,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:31:54,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:31:54,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 17:31:54,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:31:54,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:31:54,964 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2020-10-28 17:31:54,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701892482] [2020-10-28 17:31:54,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:31:54,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 17:31:54,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163410112] [2020-10-28 17:31:54,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:31:54,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:31:54,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:31:54,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:31:54,968 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 6 states. [2020-10-28 17:31:55,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:31:55,120 INFO L93 Difference]: Finished difference Result 85 states and 100 transitions. [2020-10-28 17:31:55,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:31:55,121 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-10-28 17:31:55,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:31:55,122 INFO L225 Difference]: With dead ends: 85 [2020-10-28 17:31:55,122 INFO L226 Difference]: Without dead ends: 57 [2020-10-28 17:31:55,122 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 [2020-10-28 17:31:55,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-28 17:31:55,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-10-28 17:31:55,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-28 17:31:55,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2020-10-28 17:31:55,129 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 93 [2020-10-28 17:31:55,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:31:55,129 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2020-10-28 17:31:55,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:31:55,129 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2020-10-28 17:31:55,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-28 17:31:55,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:31:55,130 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 5, 5, 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] [2020-10-28 17:31:55,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 17:31:55,130 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:31:55,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:31:55,131 INFO L82 PathProgramCache]: Analyzing trace with hash -969352066, now seen corresponding path program 9 times [2020-10-28 17:31:55,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:31:55,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473632622] [2020-10-28 17:31:55,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:31:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:31:55,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:55,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:55,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:31:55,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:00,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:00,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 17:32:00,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:32:00,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 17:32:00,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:00,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:00,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:32:00,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 17:32:00,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 17:32:00,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:00,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:00,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:00,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:00,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:00,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:00,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:32:00,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:00,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:00,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:00,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:00,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:00,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:00,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:32:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:00,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:00,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:00,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:32:00,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:00,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 17:32:00,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:00,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:00,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:32:00,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:32:00,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 17:32:00,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:00,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:32:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:00,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:00,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:00,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:00,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:32:00,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:00,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 17:32:00,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:00,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:00,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:00,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 17:32:00,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:00,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:00,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 17:32:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:00,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:00,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:00,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:00,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:32:00,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:00,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 17:32:00,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:00,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:00,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:00,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 17:32:00,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:00,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:00,615 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2020-10-28 17:32:00,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473632622] [2020-10-28 17:32:00,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:00,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 17:32:00,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164147164] [2020-10-28 17:32:00,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:32:00,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:00,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:32:00,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:32:00,618 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand 9 states. [2020-10-28 17:32:00,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:00,904 INFO L93 Difference]: Finished difference Result 99 states and 121 transitions. [2020-10-28 17:32:00,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 17:32:00,904 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-10-28 17:32:00,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:00,905 INFO L225 Difference]: With dead ends: 99 [2020-10-28 17:32:00,905 INFO L226 Difference]: Without dead ends: 61 [2020-10-28 17:32:00,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:32:00,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-28 17:32:00,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-10-28 17:32:00,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-28 17:32:00,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2020-10-28 17:32:00,912 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 95 [2020-10-28 17:32:00,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:00,913 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2020-10-28 17:32:00,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:32:00,913 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2020-10-28 17:32:00,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 17:32:00,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:00,914 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 5, 5, 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] [2020-10-28 17:32:00,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 17:32:00,914 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:00,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:00,915 INFO L82 PathProgramCache]: Analyzing trace with hash 2120153429, now seen corresponding path program 10 times [2020-10-28 17:32:00,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:00,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012265695] [2020-10-28 17:32:00,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:00,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:00,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:01,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:01,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:05,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:05,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 17:32:05,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:32:05,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 17:32:05,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:05,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:05,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:32:05,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 17:32:05,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 17:32:05,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:05,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:05,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:05,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:05,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:05,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:05,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:32:05,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:05,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:05,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:05,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:05,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:05,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:05,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:32:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:06,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:06,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:06,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 17:32:06,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:06,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 17:32:06,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:06,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:06,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:32:06,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:32:06,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 17:32:06,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:06,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 17:32:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:06,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:06,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:06,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:06,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 17:32:06,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:06,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 17:32:06,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:06,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:06,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:06,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 17:32:06,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:06,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:06,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:32:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:06,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:06,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:06,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:06,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 17:32:06,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:06,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 17:32:06,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:06,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:06,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:06,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 17:32:06,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:06,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:06,420 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2020-10-28 17:32:06,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012265695] [2020-10-28 17:32:06,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:06,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:32:06,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487878282] [2020-10-28 17:32:06,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:32:06,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:06,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:32:06,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:32:06,422 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand 10 states. [2020-10-28 17:32:06,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:06,826 INFO L93 Difference]: Finished difference Result 105 states and 129 transitions. [2020-10-28 17:32:06,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:32:06,828 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2020-10-28 17:32:06,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:06,829 INFO L225 Difference]: With dead ends: 105 [2020-10-28 17:32:06,829 INFO L226 Difference]: Without dead ends: 64 [2020-10-28 17:32:06,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:32:06,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-28 17:32:06,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2020-10-28 17:32:06,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-28 17:32:06,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2020-10-28 17:32:06,837 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 104 [2020-10-28 17:32:06,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:06,837 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2020-10-28 17:32:06,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:32:06,838 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2020-10-28 17:32:06,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-28 17:32:06,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:06,839 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 5, 5, 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] [2020-10-28 17:32:06,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 17:32:06,839 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:06,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:06,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1152417698, now seen corresponding path program 11 times [2020-10-28 17:32:06,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:06,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320079314] [2020-10-28 17:32:06,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:06,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:06,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:06,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:06,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:11,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:11,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 17:32:11,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:32:11,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 17:32:11,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:11,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:11,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:32:11,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:32:11,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:32:11,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:11,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:11,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:11,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:11,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:11,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:11,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:32:11,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:11,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:11,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:11,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:11,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:11,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:11,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 17:32:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:11,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:11,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:12,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:12,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 17:32:12,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:12,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 17:32:12,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:12,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:12,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:12,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 17:32:12,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:12,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:12,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 17:32:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:12,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:12,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:12,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:12,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 17:32:12,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:12,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 17:32:12,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:12,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:12,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:12,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 17:32:12,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:12,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:12,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 17:32:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:12,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:12,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:12,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:12,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 17:32:12,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:12,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 17:32:12,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:12,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:12,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:12,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 17:32:12,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:12,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:12,343 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 717 trivial. 0 not checked. [2020-10-28 17:32:12,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320079314] [2020-10-28 17:32:12,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:12,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 17:32:12,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728086619] [2020-10-28 17:32:12,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:32:12,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:12,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:32:12,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:32:12,345 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand 9 states. [2020-10-28 17:32:12,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:12,496 INFO L93 Difference]: Finished difference Result 110 states and 132 transitions. [2020-10-28 17:32:12,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 17:32:12,497 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 113 [2020-10-28 17:32:12,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:12,498 INFO L225 Difference]: With dead ends: 110 [2020-10-28 17:32:12,498 INFO L226 Difference]: Without dead ends: 65 [2020-10-28 17:32:12,499 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 [2020-10-28 17:32:12,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-28 17:32:12,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-10-28 17:32:12,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-28 17:32:12,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2020-10-28 17:32:12,513 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 113 [2020-10-28 17:32:12,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:12,513 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2020-10-28 17:32:12,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:32:12,514 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2020-10-28 17:32:12,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-28 17:32:12,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:12,517 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 6, 6, 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] [2020-10-28 17:32:12,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 17:32:12,517 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:12,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:12,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1698969220, now seen corresponding path program 12 times [2020-10-28 17:32:12,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:12,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468549956] [2020-10-28 17:32:12,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:12,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:12,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:12,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:12,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:17,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:17,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 17:32:17,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:32:17,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-28 17:32:17,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:17,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:17,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:32:17,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:32:17,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:32:17,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:17,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:17,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:17,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:17,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:17,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:17,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:32:17,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:17,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:17,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:17,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:17,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:17,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:17,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 17:32:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:17,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:17,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:17,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:17,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 17:32:17,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:17,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 17:32:17,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:17,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:17,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:17,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 17:32:17,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:17,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:17,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 17:32:17,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:17,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:17,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:17,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:17,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 17:32:17,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:17,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-28 17:32:17,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:17,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:17,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:17,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 17:32:17,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:17,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:17,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 17:32:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:17,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:17,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:18,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:18,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 17:32:18,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:18,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 17:32:18,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:18,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:18,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:18,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 17:32:18,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:18,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:18,078 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 717 trivial. 0 not checked. [2020-10-28 17:32:18,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468549956] [2020-10-28 17:32:18,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:18,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:32:18,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495503719] [2020-10-28 17:32:18,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:32:18,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:18,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:32:18,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:32:18,080 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand 10 states. [2020-10-28 17:32:18,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:18,249 INFO L93 Difference]: Finished difference Result 112 states and 134 transitions. [2020-10-28 17:32:18,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:32:18,250 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 115 [2020-10-28 17:32:18,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:18,250 INFO L225 Difference]: With dead ends: 112 [2020-10-28 17:32:18,250 INFO L226 Difference]: Without dead ends: 67 [2020-10-28 17:32:18,251 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 [2020-10-28 17:32:18,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-28 17:32:18,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2020-10-28 17:32:18,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-28 17:32:18,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2020-10-28 17:32:18,268 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 115 [2020-10-28 17:32:18,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:18,268 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2020-10-28 17:32:18,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:32:18,268 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2020-10-28 17:32:18,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-28 17:32:18,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:18,270 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 7, 7, 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] [2020-10-28 17:32:18,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 17:32:18,270 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:18,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:18,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1345995546, now seen corresponding path program 13 times [2020-10-28 17:32:18,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:18,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279202460] [2020-10-28 17:32:18,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:18,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:18,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:18,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:18,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:23,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:23,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 17:32:23,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:32:23,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 17:32:23,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:23,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:23,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:32:23,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 17:32:23,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:32:23,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:23,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:23,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:23,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:23,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:23,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:23,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:32:23,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:23,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:23,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:23,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 17:32:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:23,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:23,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:23,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:23,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 17:32:23,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:23,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 17:32:23,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:23,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:23,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:23,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:23,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:23,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:23,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:32:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:23,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:23,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:23,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:23,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 17:32:23,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:23,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 17:32:23,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:23,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:23,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:23,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:23,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:23,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:23,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 17:32:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:23,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:23,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:23,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:23,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 17:32:23,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:23,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 17:32:23,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:23,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:23,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:23,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 17:32:23,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:23,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:23,772 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2020-10-28 17:32:23,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279202460] [2020-10-28 17:32:23,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:23,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 17:32:23,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953554279] [2020-10-28 17:32:23,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:32:23,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:23,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:32:23,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:32:23,774 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand 7 states. [2020-10-28 17:32:23,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:23,899 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2020-10-28 17:32:23,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:32:23,899 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2020-10-28 17:32:23,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:23,900 INFO L225 Difference]: With dead ends: 103 [2020-10-28 17:32:23,900 INFO L226 Difference]: Without dead ends: 69 [2020-10-28 17:32:23,901 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 [2020-10-28 17:32:23,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-28 17:32:23,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2020-10-28 17:32:23,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-28 17:32:23,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2020-10-28 17:32:23,923 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 117 [2020-10-28 17:32:23,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:23,923 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2020-10-28 17:32:23,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:32:23,923 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2020-10-28 17:32:23,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-28 17:32:23,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:23,925 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 7, 7, 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] [2020-10-28 17:32:23,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 17:32:23,925 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:23,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:23,926 INFO L82 PathProgramCache]: Analyzing trace with hash 648195740, now seen corresponding path program 14 times [2020-10-28 17:32:23,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:23,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113943758] [2020-10-28 17:32:23,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:23,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:23,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:24,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:24,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:28,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:28,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-28 17:32:28,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:32:28,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 17:32:28,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:28,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:28,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:32:28,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 17:32:28,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:32:28,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:28,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:29,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:29,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:29,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:29,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:29,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:32:29,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:29,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:29,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:29,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 17:32:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:29,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:29,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:29,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:29,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 17:32:29,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:29,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 17:32:29,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:29,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:29,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:29,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:29,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:29,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:29,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:32:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:29,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:29,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:29,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 17:32:29,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:29,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 17:32:29,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:29,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:29,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:32:29,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:32:29,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:32:29,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:29,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:32:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:29,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:29,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:29,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:29,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 17:32:29,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:29,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 17:32:29,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:29,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:29,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:29,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 17:32:29,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:29,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:29,445 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 165 proven. 235 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2020-10-28 17:32:29,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113943758] [2020-10-28 17:32:29,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:29,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 17:32:29,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46939104] [2020-10-28 17:32:29,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:32:29,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:29,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:32:29,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:32:29,447 INFO L87 Difference]: Start difference. First operand 68 states and 79 transitions. Second operand 11 states. [2020-10-28 17:32:29,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:29,840 INFO L93 Difference]: Finished difference Result 119 states and 145 transitions. [2020-10-28 17:32:29,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 17:32:29,841 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 119 [2020-10-28 17:32:29,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:29,842 INFO L225 Difference]: With dead ends: 119 [2020-10-28 17:32:29,844 INFO L226 Difference]: Without dead ends: 73 [2020-10-28 17:32:29,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:32:29,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-28 17:32:29,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2020-10-28 17:32:29,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-28 17:32:29,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2020-10-28 17:32:29,855 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 119 [2020-10-28 17:32:29,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:29,855 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2020-10-28 17:32:29,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:32:29,856 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2020-10-28 17:32:29,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-28 17:32:29,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:29,862 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 7, 7, 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] [2020-10-28 17:32:29,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 17:32:29,862 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:29,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:29,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1767299575, now seen corresponding path program 15 times [2020-10-28 17:32:29,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:29,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604071946] [2020-10-28 17:32:29,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:29,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:29,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:29,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:29,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:34,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:34,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 17:32:34,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:32:34,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-28 17:32:34,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:34,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:34,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:32:34,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:32:34,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:32:34,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:35,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:35,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:35,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:35,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:35,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:35,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:32:35,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:35,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:35,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:35,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:35,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:35,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:35,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 17:32:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:35,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:35,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:35,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:35,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:32:35,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:35,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 17:32:35,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:35,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:35,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:35,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 17:32:35,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:35,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 14 [2020-10-28 17:32:35,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 17:32:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:35,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:35,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:35,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:35,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:32:35,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:35,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-28 17:32:35,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:35,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:35,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:35,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 17:32:35,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:35,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:35,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-28 17:32:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:35,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:35,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:35,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:35,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:32:35,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:35,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-28 17:32:35,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:35,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:35,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:35,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 17:32:35,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:35,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:35,553 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2020-10-28 17:32:35,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604071946] [2020-10-28 17:32:35,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:35,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 17:32:35,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401973305] [2020-10-28 17:32:35,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:32:35,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:35,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:32:35,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:32:35,555 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand 11 states. [2020-10-28 17:32:35,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:35,719 INFO L93 Difference]: Finished difference Result 124 states and 148 transitions. [2020-10-28 17:32:35,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 17:32:35,720 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 128 [2020-10-28 17:32:35,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:35,721 INFO L225 Difference]: With dead ends: 124 [2020-10-28 17:32:35,721 INFO L226 Difference]: Without dead ends: 74 [2020-10-28 17:32:35,722 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 [2020-10-28 17:32:35,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-28 17:32:35,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-28 17:32:35,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-28 17:32:35,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2020-10-28 17:32:35,729 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 128 [2020-10-28 17:32:35,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:35,729 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2020-10-28 17:32:35,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:32:35,729 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2020-10-28 17:32:35,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 17:32:35,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:35,731 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 8, 8, 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] [2020-10-28 17:32:35,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 17:32:35,731 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:35,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:35,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1271361817, now seen corresponding path program 16 times [2020-10-28 17:32:35,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:35,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835738731] [2020-10-28 17:32:35,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:35,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:35,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:35,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:35,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:40,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:40,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 17:32:40,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:32:40,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-28 17:32:40,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:40,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:40,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:32:40,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-28 17:32:40,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:32:40,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:40,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:40,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:40,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:40,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:40,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:40,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:32:40,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:40,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:40,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:40,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:40,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:40,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:40,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:32:40,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:40,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:40,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:41,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:41,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:32:41,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:41,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-28 17:32:41,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:41,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:41,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:41,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:41,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:41,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:41,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:32:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:41,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:41,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:41,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:41,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:32:41,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:41,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 17:32:41,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:41,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:41,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:41,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:41,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:41,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:41,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 17:32:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:41,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:41,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:41,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:41,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:32:41,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:41,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 17:32:41,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:41,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:41,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:41,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 17:32:41,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:41,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:41,362 INFO L134 CoverageAnalysis]: Checked inductivity of 995 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 979 trivial. 0 not checked. [2020-10-28 17:32:41,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835738731] [2020-10-28 17:32:41,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:41,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 17:32:41,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331522731] [2020-10-28 17:32:41,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:32:41,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:41,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:32:41,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:32:41,364 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand 8 states. [2020-10-28 17:32:41,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:41,483 INFO L93 Difference]: Finished difference Result 113 states and 134 transitions. [2020-10-28 17:32:41,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:32:41,484 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 130 [2020-10-28 17:32:41,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:41,486 INFO L225 Difference]: With dead ends: 113 [2020-10-28 17:32:41,486 INFO L226 Difference]: Without dead ends: 76 [2020-10-28 17:32:41,487 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 [2020-10-28 17:32:41,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-28 17:32:41,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-28 17:32:41,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-28 17:32:41,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2020-10-28 17:32:41,492 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 130 [2020-10-28 17:32:41,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:41,492 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2020-10-28 17:32:41,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:32:41,493 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2020-10-28 17:32:41,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-28 17:32:41,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:41,494 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 8, 8, 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] [2020-10-28 17:32:41,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 17:32:41,495 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:41,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:41,495 INFO L82 PathProgramCache]: Analyzing trace with hash 2045216727, now seen corresponding path program 17 times [2020-10-28 17:32:41,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:41,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018218701] [2020-10-28 17:32:41,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:41,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:41,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:41,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:41,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:46,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:46,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 17:32:46,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:32:46,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 17:32:46,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:46,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:46,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:32:46,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-28 17:32:46,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 17:32:46,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:46,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:46,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:46,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:46,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:46,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:46,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:32:46,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:46,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:46,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:46,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:46,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:46,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:46,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:32:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:46,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:46,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:46,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:46,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:32:46,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:46,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 17:32:46,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:46,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:46,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:46,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:46,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:46,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:46,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:32:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:46,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:46,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:46,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:32:46,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:46,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 17:32:46,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:46,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:46,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:32:46,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:32:46,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 17:32:46,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:46,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 17:32:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:46,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:46,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:47,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:47,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 17:32:47,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:47,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 17:32:47,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:47,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:47,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:47,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 17:32:47,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:47,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:47,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1004 backedges. 212 proven. 304 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2020-10-28 17:32:47,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018218701] [2020-10-28 17:32:47,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:47,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 17:32:47,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78294758] [2020-10-28 17:32:47,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:32:47,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:47,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:32:47,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:32:47,127 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand 12 states. [2020-10-28 17:32:47,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:47,582 INFO L93 Difference]: Finished difference Result 131 states and 159 transitions. [2020-10-28 17:32:47,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:32:47,584 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 132 [2020-10-28 17:32:47,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:47,585 INFO L225 Difference]: With dead ends: 131 [2020-10-28 17:32:47,585 INFO L226 Difference]: Without dead ends: 80 [2020-10-28 17:32:47,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-28 17:32:47,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-28 17:32:47,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2020-10-28 17:32:47,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-28 17:32:47,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 91 transitions. [2020-10-28 17:32:47,594 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 91 transitions. Word has length 132 [2020-10-28 17:32:47,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:47,594 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 91 transitions. [2020-10-28 17:32:47,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:32:47,594 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 91 transitions. [2020-10-28 17:32:47,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-28 17:32:47,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:47,599 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 8, 8, 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] [2020-10-28 17:32:47,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 17:32:47,600 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:47,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:47,600 INFO L82 PathProgramCache]: Analyzing trace with hash -166477028, now seen corresponding path program 18 times [2020-10-28 17:32:47,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:47,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049179030] [2020-10-28 17:32:47,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:47,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:47,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:47,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:47,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:52,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:52,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-28 17:32:52,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:32:52,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-28 17:32:52,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:52,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:52,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:32:52,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-28 17:32:52,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 17:32:52,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:52,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:52,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:52,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:52,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:52,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:52,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:32:52,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:52,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:52,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:52,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:52,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:32:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:52,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:52,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:52,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:52,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 17:32:52,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:52,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-28 17:32:52,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:52,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:52,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:52,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:52,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:52,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:52,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:32:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:52,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:53,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:53,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 17:32:53,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:53,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 17:32:53,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:53,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:53,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:32:53,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:32:53,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 17:32:53,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:53,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 17:32:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:53,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:53,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:53,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:53,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 17:32:53,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:53,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-28 17:32:53,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:53,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:53,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:53,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 17:32:53,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:53,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:53,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1238 backedges. 265 proven. 382 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2020-10-28 17:32:53,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049179030] [2020-10-28 17:32:53,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:53,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 17:32:53,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150116006] [2020-10-28 17:32:53,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:32:53,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:53,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:32:53,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:32:53,386 INFO L87 Difference]: Start difference. First operand 78 states and 91 transitions. Second operand 13 states. [2020-10-28 17:32:53,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:53,895 INFO L93 Difference]: Finished difference Result 137 states and 167 transitions. [2020-10-28 17:32:53,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:32:53,895 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 141 [2020-10-28 17:32:53,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:53,897 INFO L225 Difference]: With dead ends: 137 [2020-10-28 17:32:53,897 INFO L226 Difference]: Without dead ends: 83 [2020-10-28 17:32:53,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:32:53,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-28 17:32:53,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2020-10-28 17:32:53,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-28 17:32:53,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 95 transitions. [2020-10-28 17:32:53,906 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 95 transitions. Word has length 141 [2020-10-28 17:32:53,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:53,906 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 95 transitions. [2020-10-28 17:32:53,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 17:32:53,907 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 95 transitions. [2020-10-28 17:32:53,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-28 17:32:53,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:53,910 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 8, 8, 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] [2020-10-28 17:32:53,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 17:32:53,912 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:53,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:53,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1450526327, now seen corresponding path program 19 times [2020-10-28 17:32:53,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:53,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187630650] [2020-10-28 17:32:53,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:53,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:53,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:54,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:54,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:58,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:58,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 17:32:58,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:32:58,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 17:32:58,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:58,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:58,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:32:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:32:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:32:58,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:59,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:59,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:59,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:59,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:59,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:59,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:32:59,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:59,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:59,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:59,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:59,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:59,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:59,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:32:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:59,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:59,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:59,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:59,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:32:59,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:59,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-28 17:32:59,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:59,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:59,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:59,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:32:59,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:59,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:59,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:32:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:59,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:59,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:59,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:59,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:32:59,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:59,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-28 17:32:59,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:59,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:59,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:59,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:32:59,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:59,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:59,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-28 17:32:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:59,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:59,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:59,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:59,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:32:59,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:32:59,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-28 17:32:59,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:59,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:59,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:59,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:32:59,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:59,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:59,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1499 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1435 trivial. 0 not checked. [2020-10-28 17:32:59,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187630650] [2020-10-28 17:32:59,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:32:59,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 17:32:59,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879207860] [2020-10-28 17:32:59,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:32:59,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:59,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:32:59,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:32:59,825 INFO L87 Difference]: Start difference. First operand 81 states and 95 transitions. Second operand 12 states. [2020-10-28 17:32:59,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:59,998 INFO L93 Difference]: Finished difference Result 142 states and 170 transitions. [2020-10-28 17:32:59,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:32:59,998 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 150 [2020-10-28 17:32:59,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:00,000 INFO L225 Difference]: With dead ends: 142 [2020-10-28 17:33:00,000 INFO L226 Difference]: Without dead ends: 84 [2020-10-28 17:33:00,001 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 [2020-10-28 17:33:00,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-28 17:33:00,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-28 17:33:00,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-28 17:33:00,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 97 transitions. [2020-10-28 17:33:00,007 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 97 transitions. Word has length 150 [2020-10-28 17:33:00,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:00,007 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 97 transitions. [2020-10-28 17:33:00,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:33:00,008 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 97 transitions. [2020-10-28 17:33:00,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 17:33:00,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:00,009 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 9, 9, 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] [2020-10-28 17:33:00,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 17:33:00,009 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:00,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:00,009 INFO L82 PathProgramCache]: Analyzing trace with hash -522127335, now seen corresponding path program 20 times [2020-10-28 17:33:00,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:00,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119982649] [2020-10-28 17:33:00,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:00,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:00,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:00,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:00,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:05,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:05,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 17:33:05,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:05,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-28 17:33:05,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:05,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:05,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:33:05,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:33:05,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 17:33:05,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:05,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:05,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:05,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:05,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:05,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:05,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:33:05,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:05,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:05,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:05,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:05,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:05,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:05,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 17:33:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:05,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:05,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:05,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:05,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:33:05,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:05,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-28 17:33:05,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:05,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:05,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:05,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:33:05,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:05,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:05,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:33:05,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:05,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:05,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:05,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:05,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:33:05,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:05,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-28 17:33:05,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:05,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:05,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:05,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:33:05,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:05,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:05,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-28 17:33:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:05,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:05,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:06,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:06,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:33:06,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:06,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-28 17:33:06,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:06,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:06,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:06,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:33:06,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:06,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:06,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1516 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1435 trivial. 0 not checked. [2020-10-28 17:33:06,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119982649] [2020-10-28 17:33:06,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:06,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 17:33:06,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878309853] [2020-10-28 17:33:06,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:33:06,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:06,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:33:06,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:33:06,152 INFO L87 Difference]: Start difference. First operand 83 states and 97 transitions. Second operand 13 states. [2020-10-28 17:33:06,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:06,318 INFO L93 Difference]: Finished difference Result 144 states and 172 transitions. [2020-10-28 17:33:06,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:33:06,318 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-10-28 17:33:06,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:06,319 INFO L225 Difference]: With dead ends: 144 [2020-10-28 17:33:06,319 INFO L226 Difference]: Without dead ends: 86 [2020-10-28 17:33:06,320 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 [2020-10-28 17:33:06,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-28 17:33:06,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-28 17:33:06,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-28 17:33:06,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 99 transitions. [2020-10-28 17:33:06,326 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 99 transitions. Word has length 152 [2020-10-28 17:33:06,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:06,327 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 99 transitions. [2020-10-28 17:33:06,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 17:33:06,327 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 99 transitions. [2020-10-28 17:33:06,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 17:33:06,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:06,328 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 10, 10, 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] [2020-10-28 17:33:06,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 17:33:06,328 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:06,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:06,329 INFO L82 PathProgramCache]: Analyzing trace with hash 2133248315, now seen corresponding path program 21 times [2020-10-28 17:33:06,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:06,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455450324] [2020-10-28 17:33:06,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:06,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:06,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:06,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:06,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:11,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:11,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 17:33:11,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:11,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-28 17:33:11,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:11,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:11,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:33:11,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 17:33:11,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:33:11,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:11,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:11,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:11,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:11,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:11,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:11,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:33:11,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:11,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:11,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:11,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:11,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:11,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:11,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:33:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:11,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:11,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:11,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:11,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:33:11,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:11,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-28 17:33:11,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:11,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:11,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:11,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:11,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:11,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:11,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 17:33:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:11,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:11,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:11,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:11,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:33:11,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:11,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-28 17:33:11,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:11,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:11,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:11,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:11,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:11,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:11,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-28 17:33:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:11,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:11,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:12,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:12,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:33:12,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:12,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-28 17:33:12,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:12,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:12,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:12,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:33:12,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:12,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:12,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1535 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1510 trivial. 0 not checked. [2020-10-28 17:33:12,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455450324] [2020-10-28 17:33:12,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:12,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 17:33:12,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942806000] [2020-10-28 17:33:12,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:33:12,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:12,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:33:12,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:33:12,204 INFO L87 Difference]: Start difference. First operand 85 states and 99 transitions. Second operand 9 states. [2020-10-28 17:33:12,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:12,340 INFO L93 Difference]: Finished difference Result 131 states and 156 transitions. [2020-10-28 17:33:12,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 17:33:12,341 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 154 [2020-10-28 17:33:12,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:12,342 INFO L225 Difference]: With dead ends: 131 [2020-10-28 17:33:12,342 INFO L226 Difference]: Without dead ends: 88 [2020-10-28 17:33:12,343 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 [2020-10-28 17:33:12,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-28 17:33:12,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-28 17:33:12,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-28 17:33:12,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 101 transitions. [2020-10-28 17:33:12,349 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 101 transitions. Word has length 154 [2020-10-28 17:33:12,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:12,349 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 101 transitions. [2020-10-28 17:33:12,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:33:12,349 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 101 transitions. [2020-10-28 17:33:12,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-28 17:33:12,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:12,351 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 10, 10, 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] [2020-10-28 17:33:12,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 17:33:12,351 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:12,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:12,351 INFO L82 PathProgramCache]: Analyzing trace with hash 223674617, now seen corresponding path program 22 times [2020-10-28 17:33:12,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:12,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610379220] [2020-10-28 17:33:12,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:12,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:12,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:12,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:12,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:17,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:17,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-28 17:33:17,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:17,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 17:33:17,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:17,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:17,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:33:17,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 17:33:17,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 17:33:17,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:17,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:17,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:17,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:17,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:17,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:17,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:33:17,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:17,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:17,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:17,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:17,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:17,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:17,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:33:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:17,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:17,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:17,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:33:17,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:17,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-28 17:33:17,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:17,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:17,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:33:17,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:33:17,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 17:33:17,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:17,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 17:33:17,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:17,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:17,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:18,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:18,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:33:18,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:18,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-28 17:33:18,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:18,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:18,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:18,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:33:18,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:18,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:18,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-28 17:33:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:18,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:18,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:18,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:18,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 17:33:18,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:18,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-28 17:33:18,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:18,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:18,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:18,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:33:18,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:18,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:18,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1546 backedges. 0 proven. 793 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2020-10-28 17:33:18,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610379220] [2020-10-28 17:33:18,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:18,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 17:33:18,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012312831] [2020-10-28 17:33:18,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 17:33:18,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:18,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 17:33:18,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:33:18,395 INFO L87 Difference]: Start difference. First operand 87 states and 101 transitions. Second operand 14 states. [2020-10-28 17:33:18,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:18,942 INFO L93 Difference]: Finished difference Result 151 states and 183 transitions. [2020-10-28 17:33:18,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:33:18,943 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 156 [2020-10-28 17:33:18,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:18,944 INFO L225 Difference]: With dead ends: 151 [2020-10-28 17:33:18,944 INFO L226 Difference]: Without dead ends: 92 [2020-10-28 17:33:18,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-28 17:33:18,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-28 17:33:18,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2020-10-28 17:33:18,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-28 17:33:18,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 105 transitions. [2020-10-28 17:33:18,951 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 105 transitions. Word has length 156 [2020-10-28 17:33:18,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:18,951 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 105 transitions. [2020-10-28 17:33:18,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 17:33:18,951 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 105 transitions. [2020-10-28 17:33:18,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-28 17:33:18,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:18,953 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 10, 10, 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] [2020-10-28 17:33:18,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 17:33:18,953 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:18,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:18,953 INFO L82 PathProgramCache]: Analyzing trace with hash -970599366, now seen corresponding path program 23 times [2020-10-28 17:33:18,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:18,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425624985] [2020-10-28 17:33:18,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:19,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:19,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:19,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:19,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:24,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:24,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-28 17:33:24,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:24,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-28 17:33:24,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:24,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:24,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:33:24,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:33:24,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:33:24,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:24,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:24,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:24,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:24,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:24,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:24,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:33:24,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:24,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:24,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:24,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:24,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:24,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:24,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 17:33:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:24,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:24,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:24,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:24,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 17:33:24,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:24,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-28 17:33:24,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:24,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:24,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:24,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 17:33:24,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:24,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:24,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:33:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:24,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:24,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:24,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:24,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 17:33:24,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:24,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-28 17:33:24,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:24,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 17:33:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:24,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:24,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 17:33:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:24,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:24,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:24,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:24,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 17:33:24,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:25,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-28 17:33:25,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:25,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:25,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:25,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 17:33:25,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:25,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:25,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1834 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1734 trivial. 0 not checked. [2020-10-28 17:33:25,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425624985] [2020-10-28 17:33:25,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:25,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 17:33:25,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294378195] [2020-10-28 17:33:25,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 17:33:25,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:25,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 17:33:25,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:33:25,027 INFO L87 Difference]: Start difference. First operand 90 states and 105 transitions. Second operand 14 states. [2020-10-28 17:33:25,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:25,216 INFO L93 Difference]: Finished difference Result 156 states and 186 transitions. [2020-10-28 17:33:25,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:33:25,216 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 165 [2020-10-28 17:33:25,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:25,217 INFO L225 Difference]: With dead ends: 156 [2020-10-28 17:33:25,217 INFO L226 Difference]: Without dead ends: 93 [2020-10-28 17:33:25,218 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 [2020-10-28 17:33:25,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-28 17:33:25,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2020-10-28 17:33:25,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-28 17:33:25,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 107 transitions. [2020-10-28 17:33:25,229 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 107 transitions. Word has length 165 [2020-10-28 17:33:25,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:25,229 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 107 transitions. [2020-10-28 17:33:25,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 17:33:25,229 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 107 transitions. [2020-10-28 17:33:25,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-28 17:33:25,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:25,231 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 11, 11, 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] [2020-10-28 17:33:25,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 17:33:25,232 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:25,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:25,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1360030296, now seen corresponding path program 24 times [2020-10-28 17:33:25,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:25,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488106067] [2020-10-28 17:33:25,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:25,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:25,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:25,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:25,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:30,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:30,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-28 17:33:30,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:30,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-28 17:33:30,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:30,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:30,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:33:30,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-28 17:33:30,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:33:30,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:30,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:30,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:30,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:30,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:30,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:30,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:33:30,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:30,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:30,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:30,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:30,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:30,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:30,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 17:33:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:30,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:30,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:30,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:30,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 17:33:30,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:30,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-28 17:33:30,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:30,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:30,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:30,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:30,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:30,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:30,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 17:33:30,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:30,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:30,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:30,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:30,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 17:33:30,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:30,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-28 17:33:30,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:30,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:30,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:30,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:30,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:30,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:30,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-28 17:33:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:30,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:31,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:31,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:31,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 17:33:31,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:31,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-28 17:33:31,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:31,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:31,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:31,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 17:33:31,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:31,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:31,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1855 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1819 trivial. 0 not checked. [2020-10-28 17:33:31,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488106067] [2020-10-28 17:33:31,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:31,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:33:31,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199991713] [2020-10-28 17:33:31,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:33:31,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:31,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:33:31,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:33:31,310 INFO L87 Difference]: Start difference. First operand 92 states and 107 transitions. Second operand 10 states. [2020-10-28 17:33:31,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:31,499 INFO L93 Difference]: Finished difference Result 141 states and 168 transitions. [2020-10-28 17:33:31,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:33:31,500 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-10-28 17:33:31,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:31,501 INFO L225 Difference]: With dead ends: 141 [2020-10-28 17:33:31,501 INFO L226 Difference]: Without dead ends: 95 [2020-10-28 17:33:31,502 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 [2020-10-28 17:33:31,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-28 17:33:31,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2020-10-28 17:33:31,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-28 17:33:31,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 109 transitions. [2020-10-28 17:33:31,508 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 109 transitions. Word has length 167 [2020-10-28 17:33:31,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:31,509 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 109 transitions. [2020-10-28 17:33:31,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:33:31,509 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 109 transitions. [2020-10-28 17:33:31,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-28 17:33:31,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:31,510 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 11, 11, 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] [2020-10-28 17:33:31,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 17:33:31,510 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:31,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:31,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1810973862, now seen corresponding path program 25 times [2020-10-28 17:33:31,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:31,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312962315] [2020-10-28 17:33:31,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:31,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:31,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:31,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:31,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:36,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:36,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 17:33:36,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:36,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-28 17:33:36,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:36,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:36,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 17:33:36,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 17:33:36,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 17:33:36,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:36,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:36,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:36,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:36,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:36,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:36,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:33:36,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:36,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:36,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:36,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:36,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:36,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:36,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 17:33:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:36,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:36,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:36,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 17:33:36,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:36,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-28 17:33:36,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:36,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:36,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 17:33:36,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:33:36,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 17:33:36,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 19 [2020-10-28 17:33:37,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 17:33:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:37,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:37,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:37,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:37,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 17:33:37,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:37,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-28 17:33:37,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:37,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:37,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:37,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 17:33:37,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:37,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:37,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-28 17:33:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:37,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:37,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:37,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:37,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 17:33:37,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:37,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-28 17:33:37,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:37,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:37,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:37,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 17:33:37,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:37,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:37,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1868 backedges. 0 proven. 954 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2020-10-28 17:33:37,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312962315] [2020-10-28 17:33:37,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:37,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 17:33:37,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330739564] [2020-10-28 17:33:37,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:33:37,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:37,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:33:37,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:33:37,593 INFO L87 Difference]: Start difference. First operand 94 states and 109 transitions. Second operand 15 states. [2020-10-28 17:33:38,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:38,203 INFO L93 Difference]: Finished difference Result 163 states and 197 transitions. [2020-10-28 17:33:38,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:33:38,204 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 169 [2020-10-28 17:33:38,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:38,206 INFO L225 Difference]: With dead ends: 163 [2020-10-28 17:33:38,206 INFO L226 Difference]: Without dead ends: 99 [2020-10-28 17:33:38,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-28 17:33:38,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-28 17:33:38,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2020-10-28 17:33:38,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-28 17:33:38,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 113 transitions. [2020-10-28 17:33:38,213 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 113 transitions. Word has length 169 [2020-10-28 17:33:38,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:38,214 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 113 transitions. [2020-10-28 17:33:38,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:33:38,214 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 113 transitions. [2020-10-28 17:33:38,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-28 17:33:38,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:38,215 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 11, 11, 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] [2020-10-28 17:33:38,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 17:33:38,215 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:38,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:38,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1378628359, now seen corresponding path program 26 times [2020-10-28 17:33:38,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:38,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436278952] [2020-10-28 17:33:38,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:38,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:38,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:38,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:38,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:43,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:43,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-28 17:33:43,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:43,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-28 17:33:43,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:43,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:43,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:33:43,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-28 17:33:43,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:33:43,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:43,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:43,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:43,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:43,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:43,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:43,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:33:43,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:43,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:43,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:43,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:43,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:43,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:43,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 17:33:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:43,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:43,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:43,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:43,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 17:33:43,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:43,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-28 17:33:43,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:43,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:43,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:43,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:43,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:43,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:43,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 17:33:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:43,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:44,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:44,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 17:33:44,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:44,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-28 17:33:44,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:44,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:44,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:33:44,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:33:44,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:33:44,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:44,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-28 17:33:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:44,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:44,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:44,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:44,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 17:33:44,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:44,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-28 17:33:44,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:44,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:44,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:44,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 17:33:44,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:44,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:44,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2183 backedges. 460 proven. 670 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2020-10-28 17:33:44,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436278952] [2020-10-28 17:33:44,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:44,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 17:33:44,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20126783] [2020-10-28 17:33:44,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 17:33:44,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:44,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 17:33:44,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 17:33:44,638 INFO L87 Difference]: Start difference. First operand 97 states and 113 transitions. Second operand 16 states. [2020-10-28 17:33:45,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:45,307 INFO L93 Difference]: Finished difference Result 169 states and 205 transitions. [2020-10-28 17:33:45,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:33:45,308 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 178 [2020-10-28 17:33:45,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:45,310 INFO L225 Difference]: With dead ends: 169 [2020-10-28 17:33:45,310 INFO L226 Difference]: Without dead ends: 102 [2020-10-28 17:33:45,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-28 17:33:45,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-28 17:33:45,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-10-28 17:33:45,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-28 17:33:45,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2020-10-28 17:33:45,318 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 178 [2020-10-28 17:33:45,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:45,318 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2020-10-28 17:33:45,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 17:33:45,319 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2020-10-28 17:33:45,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-28 17:33:45,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:45,320 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 11, 11, 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] [2020-10-28 17:33:45,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 17:33:45,320 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:45,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:45,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1958997050, now seen corresponding path program 27 times [2020-10-28 17:33:45,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:45,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802564181] [2020-10-28 17:33:45,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:45,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:45,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:45,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:45,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:50,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:50,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 17:33:50,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:50,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 17:33:50,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:50,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:50,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 17:33:50,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:33:50,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 17:33:50,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:50,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:50,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:50,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:50,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:50,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:50,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:33:50,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:50,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:50,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:50,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:50,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:50,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:50,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 17:33:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:50,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:50,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:50,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:50,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:33:50,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:50,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-28 17:33:50,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:50,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:50,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:50,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 17:33:50,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:50,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:50,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:33:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:50,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:50,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:51,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:51,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:33:51,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:51,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-10-28 17:33:51,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:51,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 17:33:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:51,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:51,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 17:33:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:51,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:51,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:51,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:51,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:33:51,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:51,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-28 17:33:51,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:51,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:51,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:51,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 17:33:51,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:51,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:51,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 2404 trivial. 0 not checked. [2020-10-28 17:33:51,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802564181] [2020-10-28 17:33:51,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:51,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 17:33:51,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514630210] [2020-10-28 17:33:51,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:33:51,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:51,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:33:51,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:33:51,764 INFO L87 Difference]: Start difference. First operand 100 states and 117 transitions. Second operand 15 states. [2020-10-28 17:33:51,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:51,972 INFO L93 Difference]: Finished difference Result 174 states and 208 transitions. [2020-10-28 17:33:51,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:33:51,973 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 187 [2020-10-28 17:33:51,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:51,974 INFO L225 Difference]: With dead ends: 174 [2020-10-28 17:33:51,974 INFO L226 Difference]: Without dead ends: 103 [2020-10-28 17:33:51,975 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 [2020-10-28 17:33:51,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-28 17:33:51,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2020-10-28 17:33:51,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-28 17:33:51,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 119 transitions. [2020-10-28 17:33:51,982 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 119 transitions. Word has length 187 [2020-10-28 17:33:51,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:51,983 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 119 transitions. [2020-10-28 17:33:51,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:33:51,983 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 119 transitions. [2020-10-28 17:33:51,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-28 17:33:51,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:51,984 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 12, 12, 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] [2020-10-28 17:33:51,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 17:33:51,984 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:51,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:51,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1439299544, now seen corresponding path program 28 times [2020-10-28 17:33:51,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:51,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631419801] [2020-10-28 17:33:51,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:52,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:52,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:52,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:52,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:57,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:57,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-28 17:33:57,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:57,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 17:33:57,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:57,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:57,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 17:33:57,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:33:57,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 17:33:57,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:57,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:57,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:57,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:57,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:57,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:57,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:33:57,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:57,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:57,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:57,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:57,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:57,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:57,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 17:33:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:57,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:57,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:57,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:57,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:33:57,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:57,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-28 17:33:57,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:57,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:57,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:57,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 17:33:57,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:57,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:57,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 17:33:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:57,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:57,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:58,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:58,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:33:58,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:58,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-10-28 17:33:58,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:58,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:58,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:58,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 17:33:58,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:58,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:58,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 17:33:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:58,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:58,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:58,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:58,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:33:58,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:58,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-10-28 17:33:58,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:58,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:58,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:58,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 17:33:58,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:58,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:58,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2548 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 2404 trivial. 0 not checked. [2020-10-28 17:33:58,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631419801] [2020-10-28 17:33:58,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:33:58,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 17:33:58,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425510356] [2020-10-28 17:33:58,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 17:33:58,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:58,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 17:33:58,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 17:33:58,423 INFO L87 Difference]: Start difference. First operand 102 states and 119 transitions. Second operand 16 states. [2020-10-28 17:33:58,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:58,637 INFO L93 Difference]: Finished difference Result 176 states and 210 transitions. [2020-10-28 17:33:58,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:33:58,638 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 189 [2020-10-28 17:33:58,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:58,639 INFO L225 Difference]: With dead ends: 176 [2020-10-28 17:33:58,639 INFO L226 Difference]: Without dead ends: 105 [2020-10-28 17:33:58,640 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 [2020-10-28 17:33:58,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-28 17:33:58,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2020-10-28 17:33:58,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-28 17:33:58,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 121 transitions. [2020-10-28 17:33:58,647 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 121 transitions. Word has length 189 [2020-10-28 17:33:58,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:58,647 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 121 transitions. [2020-10-28 17:33:58,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 17:33:58,648 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 121 transitions. [2020-10-28 17:33:58,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-28 17:33:58,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:58,649 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 13, 13, 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] [2020-10-28 17:33:58,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 17:33:58,649 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:58,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:58,650 INFO L82 PathProgramCache]: Analyzing trace with hash 226202614, now seen corresponding path program 29 times [2020-10-28 17:33:58,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:58,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093348960] [2020-10-28 17:33:58,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:58,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:58,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:58,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:58,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:03,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:03,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-28 17:34:03,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:34:03,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5090 [2020-10-28 17:34:03,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:03,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:34:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-28 17:34:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:34:03,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:03,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:03,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:03,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:03,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:03,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:03,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:34:03,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:03,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:03,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:03,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:03,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:03,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:03,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 17:34:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:03,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:03,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:04,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:04,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:34:04,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:04,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-10-28 17:34:04,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:04,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:04,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:04,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:04,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:04,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:04,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:34:04,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:04,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:04,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:04,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:04,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:34:04,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:04,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-10-28 17:34:04,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:04,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:04,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:04,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:04,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:04,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:04,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-28 17:34:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:04,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:04,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:05,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:05,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:34:05,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:05,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-28 17:34:05,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:05,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:05,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:05,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 17:34:05,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:05,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:05,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2573 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 2524 trivial. 0 not checked. [2020-10-28 17:34:05,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093348960] [2020-10-28 17:34:05,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:34:05,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 17:34:05,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134061577] [2020-10-28 17:34:05,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:34:05,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:05,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:34:05,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:34:05,194 INFO L87 Difference]: Start difference. First operand 104 states and 121 transitions. Second operand 11 states. [2020-10-28 17:34:05,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:05,356 INFO L93 Difference]: Finished difference Result 159 states and 190 transitions. [2020-10-28 17:34:05,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 17:34:05,356 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 191 [2020-10-28 17:34:05,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:05,357 INFO L225 Difference]: With dead ends: 159 [2020-10-28 17:34:05,357 INFO L226 Difference]: Without dead ends: 107 [2020-10-28 17:34:05,358 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 [2020-10-28 17:34:05,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-28 17:34:05,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2020-10-28 17:34:05,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-28 17:34:05,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 123 transitions. [2020-10-28 17:34:05,365 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 123 transitions. Word has length 191 [2020-10-28 17:34:05,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:05,365 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 123 transitions. [2020-10-28 17:34:05,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:34:05,365 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 123 transitions. [2020-10-28 17:34:05,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-28 17:34:05,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:05,367 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 13, 13, 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] [2020-10-28 17:34:05,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 17:34:05,367 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:05,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:05,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1609563144, now seen corresponding path program 30 times [2020-10-28 17:34:05,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:05,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983933163] [2020-10-28 17:34:05,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:05,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:05,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:05,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:05,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:10,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:10,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-28 17:34:10,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:34:10,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-28 17:34:10,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:10,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:10,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:34:10,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 17:34:10,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 17:34:10,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:10,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:10,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:10,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:10,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:10,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:10,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:34:10,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:10,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:10,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:10,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:10,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:10,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:10,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 17:34:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:10,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:10,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:10,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:10,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:34:10,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:10,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 379 [2020-10-28 17:34:10,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:10,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:10,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:10,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:10,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:10,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:10,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:34:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:10,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:11,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:11,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:34:11,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:11,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-28 17:34:11,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:11,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:11,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:34:11,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:34:11,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 17:34:11,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:11,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-28 17:34:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:11,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:11,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:11,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:11,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:34:11,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:11,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-10-28 17:34:11,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:11,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:11,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:11,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 17:34:11,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:11,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:11,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2588 backedges. 537 proven. 784 refuted. 0 times theorem prover too weak. 1267 trivial. 0 not checked. [2020-10-28 17:34:11,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983933163] [2020-10-28 17:34:11,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:34:11,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 17:34:11,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999679408] [2020-10-28 17:34:11,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 17:34:11,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:11,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 17:34:11,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:34:11,818 INFO L87 Difference]: Start difference. First operand 106 states and 123 transitions. Second operand 17 states. [2020-10-28 17:34:12,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:12,509 INFO L93 Difference]: Finished difference Result 183 states and 221 transitions. [2020-10-28 17:34:12,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 17:34:12,509 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 193 [2020-10-28 17:34:12,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:12,511 INFO L225 Difference]: With dead ends: 183 [2020-10-28 17:34:12,511 INFO L226 Difference]: Without dead ends: 111 [2020-10-28 17:34:12,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-28 17:34:12,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-28 17:34:12,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2020-10-28 17:34:12,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-28 17:34:12,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2020-10-28 17:34:12,519 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 193 [2020-10-28 17:34:12,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:12,519 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2020-10-28 17:34:12,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 17:34:12,520 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2020-10-28 17:34:12,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-28 17:34:12,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:12,521 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 13, 13, 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] [2020-10-28 17:34:12,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 17:34:12,521 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:12,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:12,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1907677413, now seen corresponding path program 31 times [2020-10-28 17:34:12,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:12,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009148187] [2020-10-28 17:34:12,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:12,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:12,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:12,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:12,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:17,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:17,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-28 17:34:17,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:34:17,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 17:34:17,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:17,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:17,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 17:34:17,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-28 17:34:17,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 17:34:17,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:17,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:17,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:17,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:17,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:17,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:17,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:34:17,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:17,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:17,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:17,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:17,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:17,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:17,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 17:34:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:17,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:17,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:18,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:18,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 17:34:18,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:18,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-28 17:34:18,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:18,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:18,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:18,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:18,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:18,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:18,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 17:34:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:18,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:18,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:18,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 17:34:18,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:18,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-28 17:34:18,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:18,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 17:34:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:34:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 17:34:18,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:18,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-28 17:34:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:18,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:18,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:19,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:19,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 17:34:19,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:19,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-28 17:34:19,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:19,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:19,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:19,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-28 17:34:19,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:19,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:19,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2957 backedges. 620 proven. 907 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2020-10-28 17:34:19,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009148187] [2020-10-28 17:34:19,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:34:19,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 17:34:19,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863903770] [2020-10-28 17:34:19,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 17:34:19,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:19,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 17:34:19,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:34:19,123 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 18 states. [2020-10-28 17:34:19,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:19,921 INFO L93 Difference]: Finished difference Result 189 states and 229 transitions. [2020-10-28 17:34:19,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:34:19,921 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 202 [2020-10-28 17:34:19,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:19,922 INFO L225 Difference]: With dead ends: 189 [2020-10-28 17:34:19,922 INFO L226 Difference]: Without dead ends: 114 [2020-10-28 17:34:19,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 17:34:19,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-28 17:34:19,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2020-10-28 17:34:19,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-28 17:34:19,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 131 transitions. [2020-10-28 17:34:19,930 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 131 transitions. Word has length 202 [2020-10-28 17:34:19,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:19,930 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 131 transitions. [2020-10-28 17:34:19,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 17:34:19,930 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 131 transitions. [2020-10-28 17:34:19,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-28 17:34:19,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:19,932 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 13, 13, 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] [2020-10-28 17:34:19,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 17:34:19,932 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:19,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:19,932 INFO L82 PathProgramCache]: Analyzing trace with hash -325370792, now seen corresponding path program 32 times [2020-10-28 17:34:19,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:19,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932331607] [2020-10-28 17:34:19,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:20,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:20,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:20,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:20,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:25,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:25,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-28 17:34:25,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:34:25,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-28 17:34:25,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:25,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:25,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 17:34:25,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:34:25,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 17:34:25,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:25,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:25,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:25,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:25,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:25,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:25,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:34:25,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:25,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:25,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:25,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:25,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:25,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:25,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 17:34:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:25,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:25,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:25,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:25,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-28 17:34:25,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:25,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-10-28 17:34:25,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:25,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:25,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:25,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-28 17:34:25,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:25,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:25,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 17:34:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:25,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:25,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:26,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:26,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-28 17:34:26,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:26,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 510 [2020-10-28 17:34:26,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:26,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:26,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:26,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-28 17:34:26,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:26,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:26,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 17:34:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:26,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:26,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:26,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:26,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-28 17:34:26,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:26,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 619 [2020-10-28 17:34:26,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:26,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:26,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:26,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-28 17:34:26,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:26,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:26,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3353 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 3184 trivial. 0 not checked. [2020-10-28 17:34:26,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932331607] [2020-10-28 17:34:26,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:34:26,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 17:34:26,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300437037] [2020-10-28 17:34:26,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 17:34:26,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:26,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 17:34:26,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:34:26,953 INFO L87 Difference]: Start difference. First operand 112 states and 131 transitions. Second operand 17 states. [2020-10-28 17:34:27,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:27,180 INFO L93 Difference]: Finished difference Result 194 states and 232 transitions. [2020-10-28 17:34:27,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 17:34:27,180 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 211 [2020-10-28 17:34:27,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:27,181 INFO L225 Difference]: With dead ends: 194 [2020-10-28 17:34:27,182 INFO L226 Difference]: Without dead ends: 115 [2020-10-28 17:34:27,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:34:27,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-28 17:34:27,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2020-10-28 17:34:27,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-28 17:34:27,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2020-10-28 17:34:27,189 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 211 [2020-10-28 17:34:27,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:27,190 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2020-10-28 17:34:27,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 17:34:27,190 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2020-10-28 17:34:27,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-28 17:34:27,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:27,191 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 14, 14, 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] [2020-10-28 17:34:27,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-28 17:34:27,192 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:27,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:27,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1153420790, now seen corresponding path program 33 times [2020-10-28 17:34:27,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:27,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899656553] [2020-10-28 17:34:27,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:27,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:27,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:27,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:27,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:32,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:32,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-28 17:34:32,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:34:32,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 17:34:32,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:32,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:32,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 17:34:32,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:34:32,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 17:34:32,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:32,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:32,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:32,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:32,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:32,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:32,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:34:32,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:32,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:32,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:32,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:32,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:32,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:32,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:34:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:32,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:32,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:33,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:33,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-28 17:34:33,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:33,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 524 [2020-10-28 17:34:33,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:33,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:33,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:33,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-28 17:34:33,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:33,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:33,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:34:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:33,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:33,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:33,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:33,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-28 17:34:33,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:33,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-10-28 17:34:33,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:33,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:33,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:33,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-28 17:34:33,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:33,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:33,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 17:34:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:33,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:33,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:34,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:34,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-28 17:34:34,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:34,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-10-28 17:34:34,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:34,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-28 17:34:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:34,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:34,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3380 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 3184 trivial. 0 not checked. [2020-10-28 17:34:34,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899656553] [2020-10-28 17:34:34,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:34:34,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 17:34:34,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933019391] [2020-10-28 17:34:34,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 17:34:34,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:34,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 17:34:34,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:34:34,149 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand 18 states. [2020-10-28 17:34:34,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:34,382 INFO L93 Difference]: Finished difference Result 196 states and 234 transitions. [2020-10-28 17:34:34,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:34:34,383 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 213 [2020-10-28 17:34:34,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:34,384 INFO L225 Difference]: With dead ends: 196 [2020-10-28 17:34:34,384 INFO L226 Difference]: Without dead ends: 117 [2020-10-28 17:34:34,385 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 [2020-10-28 17:34:34,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-28 17:34:34,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2020-10-28 17:34:34,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-28 17:34:34,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 135 transitions. [2020-10-28 17:34:34,391 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 135 transitions. Word has length 213 [2020-10-28 17:34:34,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:34,392 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 135 transitions. [2020-10-28 17:34:34,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 17:34:34,392 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 135 transitions. [2020-10-28 17:34:34,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-28 17:34:34,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:34,393 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 15, 15, 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] [2020-10-28 17:34:34,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-28 17:34:34,394 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:34,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:34,394 INFO L82 PathProgramCache]: Analyzing trace with hash 637956116, now seen corresponding path program 34 times [2020-10-28 17:34:34,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:34,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560653255] [2020-10-28 17:34:34,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:34,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:34,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:34,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:34,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:39,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:39,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-28 17:34:39,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:34:39,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 17:34:39,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:39,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:39,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:34:39,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-28 17:34:39,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:34:39,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:39,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:39,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:39,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:39,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:39,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:39,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:34:39,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:39,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:39,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:39,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:39,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:39,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:39,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 17:34:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:39,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:39,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:40,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:40,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-28 17:34:40,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:40,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-10-28 17:34:40,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:40,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:40,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:40,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 17:34:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:40,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:40,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:40,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:40,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-28 17:34:40,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:40,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-10-28 17:34:40,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:40,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:40,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:40,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:40,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:40,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:40,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-28 17:34:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:40,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:40,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:41,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:41,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-28 17:34:41,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:41,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-10-28 17:34:41,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:41,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:41,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:41,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-28 17:34:41,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:41,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:41,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3409 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 3345 trivial. 0 not checked. [2020-10-28 17:34:41,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560653255] [2020-10-28 17:34:41,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:34:41,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 17:34:41,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701846561] [2020-10-28 17:34:41,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:34:41,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:41,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:34:41,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:34:41,215 INFO L87 Difference]: Start difference. First operand 116 states and 135 transitions. Second operand 12 states. [2020-10-28 17:34:41,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:41,363 INFO L93 Difference]: Finished difference Result 177 states and 212 transitions. [2020-10-28 17:34:41,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:34:41,364 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 215 [2020-10-28 17:34:41,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:41,365 INFO L225 Difference]: With dead ends: 177 [2020-10-28 17:34:41,366 INFO L226 Difference]: Without dead ends: 119 [2020-10-28 17:34:41,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:34:41,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-28 17:34:41,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2020-10-28 17:34:41,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-28 17:34:41,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-10-28 17:34:41,372 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 215 [2020-10-28 17:34:41,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:41,373 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-10-28 17:34:41,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:34:41,373 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-10-28 17:34:41,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-28 17:34:41,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:41,375 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 15, 15, 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] [2020-10-28 17:34:41,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-28 17:34:41,375 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:41,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:41,375 INFO L82 PathProgramCache]: Analyzing trace with hash -706117866, now seen corresponding path program 35 times [2020-10-28 17:34:41,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:41,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989938299] [2020-10-28 17:34:41,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:41,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:41,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:41,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:41,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking...