/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/array-crafted/bAnd3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 08:39:07,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 08:39:07,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 08:39:07,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 08:39:07,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 08:39:07,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 08:39:07,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 08:39:07,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 08:39:07,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 08:39:07,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 08:39:07,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 08:39:07,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 08:39:07,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 08:39:07,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 08:39:07,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 08:39:07,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 08:39:07,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 08:39:07,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 08:39:07,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 08:39:07,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 08:39:07,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 08:39:07,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 08:39:07,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 08:39:07,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 08:39:07,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 08:39:07,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 08:39:07,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 08:39:07,373 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 08:39:07,373 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 08:39:07,374 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 08:39:07,374 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 08:39:07,375 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 08:39:07,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 08:39:07,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 08:39:07,378 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 08:39:07,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 08:39:07,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 08:39:07,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 08:39:07,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 08:39:07,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 08:39:07,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 08:39:07,383 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 08:39:07,411 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 08:39:07,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 08:39:07,413 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 08:39:07,413 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 08:39:07,413 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 08:39:07,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 08:39:07,414 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 08:39:07,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 08:39:07,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 08:39:07,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 08:39:07,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 08:39:07,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 08:39:07,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 08:39:07,416 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 08:39:07,416 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 08:39:07,416 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 08:39:07,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 08:39:07,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 08:39:07,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 08:39:07,417 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 08:39:07,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 08:39:07,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 08:39:07,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 08:39:07,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 08:39:07,418 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 08:39:07,418 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 08:39:07,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 08:39:07,419 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 08:39:07,419 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 08:39:07,419 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 08:39:07,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 08:39:07,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 08:39:07,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 08:39:07,815 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 08:39:07,816 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 08:39:07,817 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bAnd3.i [2020-10-28 08:39:07,895 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2a834b6a/227512f333b94828880631adc9775609/FLAG49636ad83 [2020-10-28 08:39:08,493 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 08:39:08,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/bAnd3.i [2020-10-28 08:39:08,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2a834b6a/227512f333b94828880631adc9775609/FLAG49636ad83 [2020-10-28 08:39:08,828 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2a834b6a/227512f333b94828880631adc9775609 [2020-10-28 08:39:08,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 08:39:08,839 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 08:39:08,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 08:39:08,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 08:39:08,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 08:39:08,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:39:08" (1/1) ... [2020-10-28 08:39:08,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@135cfad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:08, skipping insertion in model container [2020-10-28 08:39:08,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:39:08" (1/1) ... [2020-10-28 08:39:08,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 08:39:08,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 08:39:09,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:39:09,059 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 08:39:09,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:39:09,100 INFO L208 MainTranslator]: Completed translation [2020-10-28 08:39:09,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:09 WrapperNode [2020-10-28 08:39:09,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 08:39:09,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 08:39:09,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 08:39:09,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 08:39:09,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:09" (1/1) ... [2020-10-28 08:39:09,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:09" (1/1) ... [2020-10-28 08:39:09,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:09" (1/1) ... [2020-10-28 08:39:09,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:09" (1/1) ... [2020-10-28 08:39:09,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:09" (1/1) ... [2020-10-28 08:39:09,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:09" (1/1) ... [2020-10-28 08:39:09,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:09" (1/1) ... [2020-10-28 08:39:09,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 08:39:09,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 08:39:09,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 08:39:09,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 08:39:09,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:09" (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 08:39:09,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 08:39:09,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 08:39:09,239 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 08:39:09,239 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2020-10-28 08:39:09,240 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 08:39:09,240 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 08:39:09,240 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 08:39:09,240 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 08:39:09,240 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 08:39:09,240 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 08:39:09,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 08:39:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 08:39:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2020-10-28 08:39:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 08:39:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 08:39:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 08:39:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 08:39:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 08:39:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 08:39:09,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 08:39:09,804 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 08:39:09,805 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 08:39:09,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:39:09 BoogieIcfgContainer [2020-10-28 08:39:09,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 08:39:09,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 08:39:09,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 08:39:09,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 08:39:09,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:39:08" (1/3) ... [2020-10-28 08:39:09,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775a046b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:39:09, skipping insertion in model container [2020-10-28 08:39:09,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:09" (2/3) ... [2020-10-28 08:39:09,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775a046b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:39:09, skipping insertion in model container [2020-10-28 08:39:09,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:39:09" (3/3) ... [2020-10-28 08:39:09,822 INFO L111 eAbstractionObserver]: Analyzing ICFG bAnd3.i [2020-10-28 08:39:09,837 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 08:39:09,843 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 08:39:09,859 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 08:39:09,910 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 08:39:09,910 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 08:39:09,910 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 08:39:09,911 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 08:39:09,911 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 08:39:09,911 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 08:39:09,911 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 08:39:09,911 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 08:39:09,933 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-28 08:39:09,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 08:39:09,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:09,945 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 08:39:09,946 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:09,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:09,955 INFO L82 PathProgramCache]: Analyzing trace with hash 585288593, now seen corresponding path program 1 times [2020-10-28 08:39:09,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:09,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980015677] [2020-10-28 08:39:09,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:10,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:10,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:10,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:10,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:10,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:10,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:10,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 08:39:10,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:39:10,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-10-28 08:39:10,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:10,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:10,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:10,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 08:39:10,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:10,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 08:39:10,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:10,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:10,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:10,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:10,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:10,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 08:39:10,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:10,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:10,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:10,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:10,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:10,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:10,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 08:39:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:10,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:10,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:10,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:10,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:10,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:10,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 08:39:10,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:10,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:10,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:10,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 08:39:10,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:10,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:10,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 08:39:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:10,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:10,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:10,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:10,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:10,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 08:39:10,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:10,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:10,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:10,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 08:39:10,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:10,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:10,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:39:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:10,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:10,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:10,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:10,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:10,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:10,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 08:39:10,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:10,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:10,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:10,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:39:10,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:10,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:10,922 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 08:39:10,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980015677] [2020-10-28 08:39:10,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:39:10,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-10-28 08:39:10,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518320440] [2020-10-28 08:39:10,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 08:39:10,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:10,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 08:39:10,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 08:39:10,950 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-28 08:39:11,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:11,067 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2020-10-28 08:39:11,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 08:39:11,069 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-28 08:39:11,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:11,078 INFO L225 Difference]: With dead ends: 60 [2020-10-28 08:39:11,078 INFO L226 Difference]: Without dead ends: 28 [2020-10-28 08:39:11,082 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 08:39:11,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-28 08:39:11,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-28 08:39:11,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-28 08:39:11,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-28 08:39:11,144 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 34 [2020-10-28 08:39:11,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:11,145 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-28 08:39:11,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 08:39:11,145 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-28 08:39:11,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 08:39:11,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:11,148 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 08:39:11,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 08:39:11,148 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:11,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:11,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1339353745, now seen corresponding path program 1 times [2020-10-28 08:39:11,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:11,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843341135] [2020-10-28 08:39:11,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:11,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:11,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:11,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:11,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:11,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:12,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:12,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 08:39:12,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:39:12,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1389 [2020-10-28 08:39:12,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:12,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:12,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:12,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 08:39:12,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:39:12,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:12,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:12,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:12,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:12,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:12,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:12,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:39:12,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:12,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:12,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:12,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:12,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:12,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 08:39:12,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 08:39:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:12,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:12,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:12,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:12,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:12,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 08:39:12,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:12,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:12,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:12,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:39:12,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:39:12,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:12,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 08:39:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:12,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:12,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:12,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:12,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:12,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:12,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 08:39:12,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:12,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:12,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:12,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:39:12,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:12,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:12,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:39:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:12,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:12,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:12,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:12,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 08:39:12,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:12,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 08:39:12,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:12,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:12,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:12,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 08:39:12,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:12,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 08:39:12,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843341135] [2020-10-28 08:39:12,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:39:12,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-28 08:39:12,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992683736] [2020-10-28 08:39:12,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 08:39:12,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:12,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 08:39:12,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:39:12,707 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-28 08:39:12,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:12,889 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2020-10-28 08:39:12,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 08:39:12,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-28 08:39:12,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:12,891 INFO L225 Difference]: With dead ends: 49 [2020-10-28 08:39:12,891 INFO L226 Difference]: Without dead ends: 30 [2020-10-28 08:39:12,892 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 08:39:12,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-28 08:39:12,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-28 08:39:12,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-28 08:39:12,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-28 08:39:12,902 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-28 08:39:12,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:12,902 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-28 08:39:12,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 08:39:12,903 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-28 08:39:12,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 08:39:12,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:12,904 INFO L422 BasicCegarLoop]: trace histogram [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 08:39:12,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 08:39:12,905 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:12,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:12,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1111227151, now seen corresponding path program 1 times [2020-10-28 08:39:12,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:12,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123115774] [2020-10-28 08:39:12,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:12,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:12,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:12,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:12,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:13,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:15,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:15,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 08:39:15,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:39:15,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2655 [2020-10-28 08:39:15,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:15,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:15,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:39:15,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:39:15,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 08:39:15,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:15,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:15,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:15,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:15,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:15,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:15,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:39:15,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:15,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:15,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:15,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:15,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:15,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:15,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 08:39:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:15,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:15,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:15,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:15,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 08:39:15,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:15,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 08:39:15,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:15,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:15,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:15,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:15,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:15,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:15,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 08:39:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:15,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:15,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:15,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 08:39:15,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:15,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 08:39:15,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:15,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:15,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:39:15,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:39:15,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 08:39:15,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:15,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 08:39:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:15,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:15,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:15,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:15,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 08:39:15,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:15,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 08:39:15,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:15,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:15,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:15,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 08:39:15,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:15,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:15,729 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 08:39:15,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123115774] [2020-10-28 08:39:15,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:39:15,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 08:39:15,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673195358] [2020-10-28 08:39:15,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:39:15,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:15,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:39:15,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:39:15,732 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-28 08:39:15,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:15,918 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-28 08:39:15,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 08:39:15,919 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-10-28 08:39:15,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:15,920 INFO L225 Difference]: With dead ends: 52 [2020-10-28 08:39:15,920 INFO L226 Difference]: Without dead ends: 32 [2020-10-28 08:39:15,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 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 08:39:15,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-28 08:39:15,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-28 08:39:15,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-28 08:39:15,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-28 08:39:15,929 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 40 [2020-10-28 08:39:15,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:15,929 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-28 08:39:15,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:39:15,930 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-28 08:39:15,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 08:39:15,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:15,931 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:15,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 08:39:15,932 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:15,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:15,932 INFO L82 PathProgramCache]: Analyzing trace with hash 51803405, now seen corresponding path program 2 times [2020-10-28 08:39:15,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:15,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934005590] [2020-10-28 08:39:15,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:15,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:15,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:15,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:15,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:16,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:20,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:20,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 08:39:20,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:39:20,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 08:39:20,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:20,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:20,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:20,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 08:39:20,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:39:20,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 08:39:21,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:21,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:21,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:21,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:21,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:21,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:39:21,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:21,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:21,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:21,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:21,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:21,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 08:39:21,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 08:39:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:21,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:21,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:21,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:21,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:21,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:21,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 08:39:21,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:21,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:21,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:21,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:21,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:21,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:21,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 08:39:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:21,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:21,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:21,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:21,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:21,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:21,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 08:39:21,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:21,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:21,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:21,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:21,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:21,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:21,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 08:39:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:21,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:21,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:21,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:21,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:21,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:21,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 08:39:21,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:21,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:21,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:21,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:21,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:21,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:21,133 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-28 08:39:21,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934005590] [2020-10-28 08:39:21,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:39:21,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 08:39:21,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166369956] [2020-10-28 08:39:21,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 08:39:21,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:21,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 08:39:21,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:39:21,137 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 4 states. [2020-10-28 08:39:21,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:21,257 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2020-10-28 08:39:21,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 08:39:21,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-28 08:39:21,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:21,259 INFO L225 Difference]: With dead ends: 50 [2020-10-28 08:39:21,259 INFO L226 Difference]: Without dead ends: 33 [2020-10-28 08:39:21,260 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 08:39:21,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-28 08:39:21,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-28 08:39:21,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-28 08:39:21,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-28 08:39:21,272 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 46 [2020-10-28 08:39:21,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:21,274 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-28 08:39:21,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 08:39:21,275 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-28 08:39:21,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-28 08:39:21,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:21,279 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:39:21,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 08:39:21,280 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:21,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:21,280 INFO L82 PathProgramCache]: Analyzing trace with hash -339194997, now seen corresponding path program 1 times [2020-10-28 08:39:21,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:21,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123506956] [2020-10-28 08:39:21,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:21,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:21,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:21,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:21,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:21,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:21,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:26,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:26,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 08:39:26,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:39:26,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:39:26,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:26,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:26,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:39:26,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 08:39:26,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 08:39:26,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 08:39:26,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:26,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:26,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:26,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:26,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:26,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:39:26,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:26,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:26,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:26,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:26,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:26,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:26,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 08:39:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:26,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:26,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:26,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:26,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:26,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:26,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 08:39:26,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:26,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:26,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:26,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:26,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:26,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:26,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 08:39:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:26,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:26,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:26,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:26,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:26,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:26,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 08:39:26,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:26,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:26,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:26,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:26,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:26,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:26,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 08:39:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:26,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:26,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:26,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:26,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:26,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:26,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 08:39:26,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:26,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:26,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:26,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:26,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:26,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 08:39:26,460 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-28 08:39:26,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123506956] [2020-10-28 08:39:26,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:39:26,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 08:39:26,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137368802] [2020-10-28 08:39:26,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:39:26,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:26,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:39:26,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:39:26,463 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2020-10-28 08:39:26,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:26,566 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2020-10-28 08:39:26,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 08:39:26,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-28 08:39:26,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:26,568 INFO L225 Difference]: With dead ends: 52 [2020-10-28 08:39:26,568 INFO L226 Difference]: Without dead ends: 35 [2020-10-28 08:39:26,569 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 08:39:26,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-28 08:39:26,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-10-28 08:39:26,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-28 08:39:26,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-28 08:39:26,575 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 48 [2020-10-28 08:39:26,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:26,576 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-28 08:39:26,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:39:26,576 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-28 08:39:26,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 08:39:26,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:26,578 INFO L422 BasicCegarLoop]: trace histogram [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 08:39:26,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 08:39:26,578 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:26,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:26,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1868462729, now seen corresponding path program 2 times [2020-10-28 08:39:26,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:26,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987878266] [2020-10-28 08:39:26,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:26,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:26,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:26,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:26,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:27,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:31,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:31,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 08:39:31,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:39:31,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 08:39:31,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:31,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:31,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:39:31,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:31,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:39:31,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:31,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:31,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:31,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:31,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:31,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:31,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:39:31,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:31,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:31,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:31,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:31,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:31,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:31,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 08:39:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:31,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:31,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:31,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:31,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:31,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:31,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 08:39:31,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:31,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:31,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:31,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:31,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:31,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:31,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 08:39:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:31,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:31,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:31,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:31,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:31,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:31,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 08:39:31,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:31,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:31,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:31,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:31,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:31,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:31,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 08:39:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:31,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:31,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:31,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:31,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:31,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:31,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 08:39:31,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:31,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:31,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:31,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:31,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:31,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:31,742 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-28 08:39:31,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987878266] [2020-10-28 08:39:31,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:39:31,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 08:39:31,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330215472] [2020-10-28 08:39:31,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 08:39:31,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:31,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 08:39:31,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:39:31,745 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 4 states. [2020-10-28 08:39:31,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:31,858 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-10-28 08:39:31,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 08:39:31,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-28 08:39:31,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:31,860 INFO L225 Difference]: With dead ends: 62 [2020-10-28 08:39:31,860 INFO L226 Difference]: Without dead ends: 36 [2020-10-28 08:39:31,861 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 08:39:31,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-28 08:39:31,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-28 08:39:31,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-28 08:39:31,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-28 08:39:31,876 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 50 [2020-10-28 08:39:31,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:31,877 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-28 08:39:31,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 08:39:31,881 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-28 08:39:31,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 08:39:31,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:31,883 INFO L422 BasicCegarLoop]: trace histogram [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 08:39:31,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 08:39:31,885 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:31,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:31,885 INFO L82 PathProgramCache]: Analyzing trace with hash -171313173, now seen corresponding path program 1 times [2020-10-28 08:39:31,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:31,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040381534] [2020-10-28 08:39:31,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:31,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:31,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:31,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:31,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:32,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:36,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:36,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 08:39:36,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:39:36,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 08:39:36,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:36,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:36,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:39:36,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-28 08:39:36,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:36,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 08:39:36,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:36,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:36,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:36,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:36,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:36,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:36,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:39:36,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:36,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:36,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:36,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:36,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:36,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:36,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 08:39:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:36,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:36,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:37,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:37,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:37,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:37,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 08:39:37,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:37,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:37,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:37,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:37,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:37,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:37,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 08:39:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:37,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:37,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:37,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:37,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:37,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:37,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 08:39:37,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:37,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:37,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:37,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:37,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:37,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:37,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 08:39:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:37,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:37,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:37,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 08:39:37,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:37,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 08:39:37,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:37,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:37,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:39:37,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:39:37,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:37,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:37,085 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-28 08:39:37,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040381534] [2020-10-28 08:39:37,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:39:37,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 08:39:37,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430687415] [2020-10-28 08:39:37,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 08:39:37,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:37,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 08:39:37,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:39:37,090 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-28 08:39:37,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:37,298 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2020-10-28 08:39:37,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 08:39:37,299 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-28 08:39:37,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:37,300 INFO L225 Difference]: With dead ends: 63 [2020-10-28 08:39:37,300 INFO L226 Difference]: Without dead ends: 38 [2020-10-28 08:39:37,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 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 08:39:37,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-28 08:39:37,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-28 08:39:37,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-28 08:39:37,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-28 08:39:37,307 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 52 [2020-10-28 08:39:37,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:37,308 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-28 08:39:37,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 08:39:37,308 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-28 08:39:37,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 08:39:37,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:37,309 INFO L422 BasicCegarLoop]: trace histogram [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 08:39:37,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 08:39:37,310 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:37,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:37,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1226906345, now seen corresponding path program 2 times [2020-10-28 08:39:37,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:37,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366356951] [2020-10-28 08:39:37,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:37,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:37,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:37,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:37,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:38,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:42,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:42,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 08:39:42,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:39:42,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 08:39:42,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:42,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:42,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:39:42,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 08:39:42,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:39:42,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:42,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:42,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:42,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:42,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:42,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:42,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:39:42,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:42,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:42,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:42,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:42,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:42,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:42,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 08:39:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:42,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:42,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:42,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:42,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:39:42,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:42,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 08:39:42,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:42,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:42,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:42,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:42,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:42,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:42,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 08:39:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:42,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:42,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:42,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:42,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:39:42,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:42,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 08:39:42,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:42,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:42,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:42,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:42,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:42,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:42,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 08:39:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:42,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:42,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:42,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:42,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:39:42,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:42,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 08:39:42,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:42,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:42,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:42,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:39:42,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:42,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:42,483 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-28 08:39:42,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366356951] [2020-10-28 08:39:42,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:39:42,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 08:39:42,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544997091] [2020-10-28 08:39:42,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 08:39:42,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:42,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 08:39:42,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:39:42,486 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-10-28 08:39:42,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:42,598 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2020-10-28 08:39:42,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 08:39:42,599 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-28 08:39:42,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:42,600 INFO L225 Difference]: With dead ends: 59 [2020-10-28 08:39:42,600 INFO L226 Difference]: Without dead ends: 40 [2020-10-28 08:39:42,601 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 08:39:42,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-28 08:39:42,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-28 08:39:42,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-28 08:39:42,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-28 08:39:42,607 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 58 [2020-10-28 08:39:42,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:42,608 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-28 08:39:42,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 08:39:42,608 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-28 08:39:42,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 08:39:42,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:42,609 INFO L422 BasicCegarLoop]: trace histogram [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 08:39:42,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 08:39:42,610 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:42,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:42,610 INFO L82 PathProgramCache]: Analyzing trace with hash -514401689, now seen corresponding path program 3 times [2020-10-28 08:39:42,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:42,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893785662] [2020-10-28 08:39:42,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:42,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:42,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:42,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:42,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:43,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:47,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:47,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 08:39:47,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:39:47,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 08:39:47,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:47,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:39:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:39:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 08:39:47,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:47,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:47,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:47,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:47,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:47,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:47,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:39:47,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:47,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:47,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:47,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:47,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:47,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:47,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 08:39:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:47,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:47,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:47,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:47,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:39:47,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:47,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 08:39:47,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:47,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:47,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:47,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:39:47,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:47,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:47,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 08:39:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:47,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:47,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:47,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:47,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:39:47,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:47,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 08:39:47,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:47,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:47,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:47,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:39:47,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:47,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:47,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 08:39:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:47,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:47,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:47,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:47,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:39:47,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:47,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 08:39:47,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:47,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:47,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:47,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:39:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:47,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:39:47,802 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-28 08:39:47,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893785662] [2020-10-28 08:39:47,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:39:47,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 08:39:47,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095582512] [2020-10-28 08:39:47,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:39:47,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:47,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:39:47,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:39:47,805 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 5 states. [2020-10-28 08:39:47,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:47,908 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2020-10-28 08:39:47,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 08:39:47,909 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-10-28 08:39:47,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:47,910 INFO L225 Difference]: With dead ends: 72 [2020-10-28 08:39:47,910 INFO L226 Difference]: Without dead ends: 42 [2020-10-28 08:39:47,911 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 08:39:47,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-28 08:39:47,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-28 08:39:47,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-28 08:39:47,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-28 08:39:47,918 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 60 [2020-10-28 08:39:47,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:47,918 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-28 08:39:47,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:39:47,918 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-28 08:39:47,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 08:39:47,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:47,920 INFO L422 BasicCegarLoop]: trace histogram [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 08:39:47,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 08:39:47,920 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:47,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:47,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1222018377, now seen corresponding path program 4 times [2020-10-28 08:39:47,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:47,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174939046] [2020-10-28 08:39:47,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:47,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:47,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:47,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:47,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:49,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:52,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:52,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 08:39:52,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:39:52,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 08:39:52,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:52,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:52,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:39:52,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 08:39:52,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:39:52,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:52,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:52,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:52,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:52,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:52,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:52,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:39:52,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:52,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:52,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:52,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:52,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:52,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:52,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 08:39:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:52,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:53,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:53,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:39:53,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:53,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 08:39:53,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:53,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:53,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:39:53,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:39:53,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:39:53,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:53,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 08:39:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:53,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:53,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:53,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:53,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:39:53,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:53,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 08:39:53,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:53,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:39:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:53,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:53,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-28 08:39:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:53,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:53,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:53,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:53,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 08:39:53,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:53,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 08:39:53,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:53,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:53,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:53,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:39:53,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:53,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:53,115 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-28 08:39:53,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174939046] [2020-10-28 08:39:53,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:39:53,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 08:39:53,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527678644] [2020-10-28 08:39:53,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 08:39:53,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:53,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 08:39:53,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:39:53,119 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-28 08:39:53,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:53,331 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2020-10-28 08:39:53,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 08:39:53,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-10-28 08:39:53,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:53,333 INFO L225 Difference]: With dead ends: 73 [2020-10-28 08:39:53,333 INFO L226 Difference]: Without dead ends: 44 [2020-10-28 08:39:53,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:39:53,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-28 08:39:53,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-28 08:39:53,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 08:39:53,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-28 08:39:53,340 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 62 [2020-10-28 08:39:53,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:53,341 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-28 08:39:53,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 08:39:53,341 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-28 08:39:53,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 08:39:53,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:53,342 INFO L422 BasicCegarLoop]: trace histogram [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 08:39:53,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 08:39:53,342 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:53,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:53,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1356740409, now seen corresponding path program 5 times [2020-10-28 08:39:53,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:53,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312324833] [2020-10-28 08:39:53,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:53,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:53,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:53,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:53,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:54,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:58,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:58,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 08:39:58,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:39:58,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 08:39:58,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:58,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:58,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:39:58,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-28 08:39:58,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:39:58,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:58,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:39:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:58,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:58,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:58,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:39:58,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:58,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:39:58,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:58,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:58,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:58,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:58,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:58,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:58,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 08:39:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:58,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:58,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:58,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:58,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 08:39:58,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:58,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 08:39:58,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:58,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:58,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:58,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:58,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:58,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:58,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 08:39:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:58,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:58,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:58,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:58,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 08:39:58,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:39:58,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 08:39:58,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:58,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:39:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:39:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:39:58,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:58,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 08:39:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:58,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:58,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:39:58,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 08:39:58,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:39:58,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 08:39:58,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:39:58,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:39:58,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:39:58,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:39:58,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:39:58,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:39:58,539 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-28 08:39:58,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312324833] [2020-10-28 08:39:58,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:39:58,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 08:39:58,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470482796] [2020-10-28 08:39:58,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 08:39:58,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:39:58,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 08:39:58,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:39:58,541 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 8 states. [2020-10-28 08:39:58,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:39:58,838 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2020-10-28 08:39:58,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 08:39:58,838 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-10-28 08:39:58,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:39:58,840 INFO L225 Difference]: With dead ends: 77 [2020-10-28 08:39:58,840 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 08:39:58,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 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 08:39:58,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 08:39:58,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-28 08:39:58,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 08:39:58,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-28 08:39:58,848 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 68 [2020-10-28 08:39:58,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:39:58,848 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-28 08:39:58,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 08:39:58,848 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-28 08:39:58,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-28 08:39:58,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:39:58,849 INFO L422 BasicCegarLoop]: trace histogram [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 08:39:58,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 08:39:58,850 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:39:58,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:39:58,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1925401147, now seen corresponding path program 6 times [2020-10-28 08:39:58,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:39:58,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106934603] [2020-10-28 08:39:58,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:39:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:39:58,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:58,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:58,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:39:58,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:00,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:03,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:03,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 08:40:03,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:03,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 08:40:03,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:03,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:03,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:40:03,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-28 08:40:03,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:40:03,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:03,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:03,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:03,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:03,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:03,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:03,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:40:03,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:03,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:03,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:03,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:03,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:03,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:03,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 08:40:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:03,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:03,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:03,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:03,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:03,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:03,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 08:40:03,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:03,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:03,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:03,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 08:40:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:03,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:03,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:04,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:04,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:04,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:04,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 08:40:04,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:04,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:04,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:04,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:04,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:04,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:04,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 08:40:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:04,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:04,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:04,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:04,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:04,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:04,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 08:40:04,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:04,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:04,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:04,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:04,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:04,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:04,061 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2020-10-28 08:40:04,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106934603] [2020-10-28 08:40:04,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:04,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 08:40:04,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251198317] [2020-10-28 08:40:04,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 08:40:04,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:04,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 08:40:04,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:40:04,064 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 7 states. [2020-10-28 08:40:04,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:04,181 INFO L93 Difference]: Finished difference Result 71 states and 76 transitions. [2020-10-28 08:40:04,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 08:40:04,182 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-10-28 08:40:04,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:04,183 INFO L225 Difference]: With dead ends: 71 [2020-10-28 08:40:04,183 INFO L226 Difference]: Without dead ends: 48 [2020-10-28 08:40:04,184 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 08:40:04,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-28 08:40:04,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-28 08:40:04,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-28 08:40:04,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-28 08:40:04,191 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 74 [2020-10-28 08:40:04,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:04,192 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-28 08:40:04,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 08:40:04,192 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-28 08:40:04,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 08:40:04,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:04,193 INFO L422 BasicCegarLoop]: trace histogram [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 08:40:04,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 08:40:04,193 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:04,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:04,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1911492163, now seen corresponding path program 7 times [2020-10-28 08:40:04,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:04,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621815716] [2020-10-28 08:40:04,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:04,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:04,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:04,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:04,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:06,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:09,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:09,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 08:40:09,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:09,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:40:09,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:09,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:09,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:40:09,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-28 08:40:09,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:40:09,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:09,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:09,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:09,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:09,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:09,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:09,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:40:09,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:09,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:09,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:09,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:09,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:09,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:09,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 08:40:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:09,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:09,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:09,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:09,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:09,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:09,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 08:40:09,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:09,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:09,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:09,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:09,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:09,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:09,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 08:40:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:09,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:09,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:09,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:09,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:09,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:09,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 08:40:09,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:09,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:09,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:09,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:09,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:09,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:09,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 08:40:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:09,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:09,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:09,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:09,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:09,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:09,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 08:40:09,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:09,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:09,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:09,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:09,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:09,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:09,420 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2020-10-28 08:40:09,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621815716] [2020-10-28 08:40:09,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:09,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 08:40:09,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881970347] [2020-10-28 08:40:09,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 08:40:09,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:09,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 08:40:09,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:40:09,423 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 8 states. [2020-10-28 08:40:09,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:09,569 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2020-10-28 08:40:09,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 08:40:09,570 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 76 [2020-10-28 08:40:09,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:09,571 INFO L225 Difference]: With dead ends: 73 [2020-10-28 08:40:09,571 INFO L226 Difference]: Without dead ends: 50 [2020-10-28 08:40:09,571 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 08:40:09,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-28 08:40:09,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-28 08:40:09,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-28 08:40:09,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-28 08:40:09,578 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 76 [2020-10-28 08:40:09,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:09,578 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-28 08:40:09,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 08:40:09,578 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-28 08:40:09,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-28 08:40:09,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:09,579 INFO L422 BasicCegarLoop]: trace histogram [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 08:40:09,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 08:40:09,580 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:09,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:09,580 INFO L82 PathProgramCache]: Analyzing trace with hash -210944191, now seen corresponding path program 8 times [2020-10-28 08:40:09,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:09,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133984143] [2020-10-28 08:40:09,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:09,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:09,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:09,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:09,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:12,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:14,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:14,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 08:40:14,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:14,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 08:40:14,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:14,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:14,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:40:14,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:40:14,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:40:14,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:14,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:14,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:14,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:14,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:14,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:14,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:40:14,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:14,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:14,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:14,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:14,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:14,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:14,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 08:40:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:14,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:14,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:14,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:14,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:14,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:14,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 08:40:14,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:14,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:14,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:14,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:14,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:14,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:14,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 08:40:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:14,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:14,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:14,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:14,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:14,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:14,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 08:40:14,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:14,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:14,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:14,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:14,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:14,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:14,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 08:40:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:14,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:14,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:14,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:14,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:14,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:14,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 08:40:14,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:14,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:14,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:14,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:14,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:14,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:40:14,789 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-28 08:40:14,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133984143] [2020-10-28 08:40:14,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:14,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 08:40:14,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703755276] [2020-10-28 08:40:14,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 08:40:14,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:14,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 08:40:14,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:40:14,793 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2020-10-28 08:40:14,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:14,920 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2020-10-28 08:40:14,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 08:40:14,921 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-28 08:40:14,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:14,922 INFO L225 Difference]: With dead ends: 90 [2020-10-28 08:40:14,922 INFO L226 Difference]: Without dead ends: 52 [2020-10-28 08:40:14,923 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 08:40:14,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-28 08:40:14,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-28 08:40:14,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 08:40:14,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-28 08:40:14,929 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 78 [2020-10-28 08:40:14,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:14,930 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-28 08:40:14,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 08:40:14,930 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-28 08:40:14,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 08:40:14,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:14,931 INFO L422 BasicCegarLoop]: trace histogram [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 08:40:14,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 08:40:14,931 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:14,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:14,932 INFO L82 PathProgramCache]: Analyzing trace with hash -830425693, now seen corresponding path program 9 times [2020-10-28 08:40:14,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:14,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325352492] [2020-10-28 08:40:14,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:14,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:14,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:15,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:15,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:18,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:19,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:19,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 08:40:19,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:19,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 08:40:19,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:19,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:19,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:40:19,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-28 08:40:19,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:40:19,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:20,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:20,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:20,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:20,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:20,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:20,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:40:20,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:20,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:20,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:20,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:20,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:20,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:20,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 08:40:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:20,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:20,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:20,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:20,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:20,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:20,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 08:40:20,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:20,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:20,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:20,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:20,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:20,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:20,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:40:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:20,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:20,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:20,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:20,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:20,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:20,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 08:40:20,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:20,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:20,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:20,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:20,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 08:40:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:20,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:20,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:20,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:20,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:20,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:20,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 08:40:20,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:20,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:20,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:20,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:20,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:20,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:40:20,163 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2020-10-28 08:40:20,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325352492] [2020-10-28 08:40:20,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:20,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 08:40:20,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811650046] [2020-10-28 08:40:20,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 08:40:20,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:20,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 08:40:20,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:40:20,166 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 9 states. [2020-10-28 08:40:20,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:20,353 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-10-28 08:40:20,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 08:40:20,354 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2020-10-28 08:40:20,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:20,355 INFO L225 Difference]: With dead ends: 77 [2020-10-28 08:40:20,355 INFO L226 Difference]: Without dead ends: 54 [2020-10-28 08:40:20,355 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 08:40:20,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-28 08:40:20,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-28 08:40:20,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-28 08:40:20,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-28 08:40:20,363 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 80 [2020-10-28 08:40:20,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:20,363 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-28 08:40:20,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 08:40:20,363 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-28 08:40:20,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 08:40:20,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:20,364 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 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 08:40:20,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 08:40:20,365 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:20,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:20,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1915915937, now seen corresponding path program 10 times [2020-10-28 08:40:20,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:20,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374072113] [2020-10-28 08:40:20,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:20,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:20,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:20,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:20,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:24,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:25,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:25,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 08:40:25,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:40:25,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 08:40:25,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:25,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:25,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:40:25,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-28 08:40:25,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:40:25,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:25,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:25,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:25,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:25,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:25,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:25,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:40:25,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:25,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:25,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:25,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 08:40:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:25,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:25,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:25,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:25,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:25,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:25,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 08:40:25,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:25,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:25,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:25,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:25,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:25,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:25,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:40:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:25,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:25,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:25,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:25,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:25,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:25,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 08:40:25,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:25,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:25,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:25,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 08:40:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:25,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:25,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:25,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:25,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:25,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:25,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 08:40:25,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:25,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:25,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:25,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:25,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:25,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:25,618 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2020-10-28 08:40:25,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374072113] [2020-10-28 08:40:25,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:25,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:40:25,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094484846] [2020-10-28 08:40:25,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:40:25,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:25,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:40:25,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:40:25,620 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 10 states. [2020-10-28 08:40:25,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:25,765 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2020-10-28 08:40:25,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 08:40:25,765 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 82 [2020-10-28 08:40:25,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:25,766 INFO L225 Difference]: With dead ends: 79 [2020-10-28 08:40:25,766 INFO L226 Difference]: Without dead ends: 56 [2020-10-28 08:40:25,767 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 08:40:25,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-28 08:40:25,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-28 08:40:25,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-28 08:40:25,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-28 08:40:25,773 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 82 [2020-10-28 08:40:25,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:25,773 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-28 08:40:25,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:40:25,774 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-28 08:40:25,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-28 08:40:25,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:25,774 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 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 08:40:25,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 08:40:25,775 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:25,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:25,775 INFO L82 PathProgramCache]: Analyzing trace with hash -254664673, now seen corresponding path program 11 times [2020-10-28 08:40:25,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:25,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860104364] [2020-10-28 08:40:25,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:25,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:25,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:25,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:25,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:30,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:30,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 08:40:30,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:40:30,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 08:40:30,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:30,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:30,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:40:30,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 08:40:30,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:40:30,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:30,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:30,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:30,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:30,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:30,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:30,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:40:30,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:30,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:30,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:30,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:30,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:30,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:30,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 08:40:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:30,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:30,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:30,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:30,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:30,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:30,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 08:40:30,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:30,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:30,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:30,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:30,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:30,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:30,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 08:40:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:30,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:30,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:30,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:30,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:30,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 08:40:30,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:30,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:30,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:40:30,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:40:30,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:40:30,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:30,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 08:40:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:30,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:30,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:30,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:30,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 08:40:30,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:30,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 08:40:30,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:30,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:30,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:30,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 08:40:30,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:30,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:30,998 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 64 proven. 89 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-10-28 08:40:30,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860104364] [2020-10-28 08:40:30,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:30,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 08:40:30,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831657437] [2020-10-28 08:40:31,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 08:40:31,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:31,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 08:40:31,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:40:31,002 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 9 states. [2020-10-28 08:40:31,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:31,297 INFO L93 Difference]: Finished difference Result 99 states and 109 transitions. [2020-10-28 08:40:31,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 08:40:31,298 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-10-28 08:40:31,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:31,299 INFO L225 Difference]: With dead ends: 99 [2020-10-28 08:40:31,299 INFO L226 Difference]: Without dead ends: 58 [2020-10-28 08:40:31,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 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 08:40:31,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-28 08:40:31,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-28 08:40:31,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-28 08:40:31,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-28 08:40:31,306 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 84 [2020-10-28 08:40:31,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:31,306 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-28 08:40:31,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 08:40:31,306 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-28 08:40:31,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-28 08:40:31,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:31,308 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 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 08:40:31,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 08:40:31,308 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:31,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:31,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1917950179, now seen corresponding path program 12 times [2020-10-28 08:40:31,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:31,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085796870] [2020-10-28 08:40:31,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:31,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:31,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:31,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:31,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:36,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:36,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 08:40:36,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:40:36,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 08:40:36,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:36,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:36,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:40:36,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 08:40:36,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:40:36,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:36,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:36,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:36,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:36,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:36,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:36,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:40:36,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:36,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:36,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:36,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:36,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:36,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:36,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 08:40:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:36,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:36,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:36,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:36,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 08:40:36,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:36,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 08:40:36,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:36,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:36,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:36,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:36,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:36,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:36,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 08:40:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:36,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:36,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:36,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 08:40:36,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:36,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 08:40:36,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:36,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:36,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:40:36,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:40:36,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:40:36,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:36,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 08:40:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:36,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:36,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:36,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:36,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 08:40:36,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:36,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 08:40:36,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:36,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:36,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:36,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 08:40:36,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:36,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:36,559 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 88 proven. 124 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2020-10-28 08:40:36,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085796870] [2020-10-28 08:40:36,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:36,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:40:36,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894933687] [2020-10-28 08:40:36,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:40:36,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:36,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:40:36,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:40:36,562 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 10 states. [2020-10-28 08:40:36,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:36,909 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2020-10-28 08:40:36,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 08:40:36,910 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-10-28 08:40:36,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:36,912 INFO L225 Difference]: With dead ends: 103 [2020-10-28 08:40:36,912 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 08:40:36,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:40:36,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 08:40:36,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-28 08:40:36,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-28 08:40:36,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-28 08:40:36,919 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 90 [2020-10-28 08:40:36,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:36,920 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-28 08:40:36,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:40:36,920 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-28 08:40:36,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-28 08:40:36,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:36,921 INFO L422 BasicCegarLoop]: trace histogram [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 08:40:36,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 08:40:36,921 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:36,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:36,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1006155675, now seen corresponding path program 13 times [2020-10-28 08:40:36,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:36,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540997147] [2020-10-28 08:40:36,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:36,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:36,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:36,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:36,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:41,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:41,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 08:40:41,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:40:41,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 08:40:41,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:41,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:41,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:40:41,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:40:41,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:40:41,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:41,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:41,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:42,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:42,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:42,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:42,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:40:42,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:42,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:42,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:42,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:42,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:42,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:42,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 08:40:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:42,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:42,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:42,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:42,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:40:42,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:42,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 08:40:42,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:42,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:42,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:42,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:40:42,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:42,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:42,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 08:40:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:42,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:42,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:42,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:42,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:40:42,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:42,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 08:40:42,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:42,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:42,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:42,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:40:42,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:42,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:42,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 08:40:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:42,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:42,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:42,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:42,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:40:42,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:42,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 08:40:42,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:42,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:42,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:42,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:40:42,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:42,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:42,106 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2020-10-28 08:40:42,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540997147] [2020-10-28 08:40:42,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:42,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 08:40:42,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845005471] [2020-10-28 08:40:42,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 08:40:42,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:42,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 08:40:42,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:40:42,108 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 7 states. [2020-10-28 08:40:42,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:42,250 INFO L93 Difference]: Finished difference Result 108 states and 116 transitions. [2020-10-28 08:40:42,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 08:40:42,250 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-28 08:40:42,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:42,251 INFO L225 Difference]: With dead ends: 108 [2020-10-28 08:40:42,251 INFO L226 Difference]: Without dead ends: 62 [2020-10-28 08:40:42,253 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 08:40:42,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-28 08:40:42,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-28 08:40:42,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 08:40:42,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-28 08:40:42,268 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 96 [2020-10-28 08:40:42,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:42,269 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-28 08:40:42,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 08:40:42,269 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-28 08:40:42,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 08:40:42,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:42,270 INFO L422 BasicCegarLoop]: trace histogram [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 08:40:42,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 08:40:42,270 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:42,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:42,274 INFO L82 PathProgramCache]: Analyzing trace with hash -594273923, now seen corresponding path program 14 times [2020-10-28 08:40:42,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:42,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946416089] [2020-10-28 08:40:42,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:42,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:42,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:42,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:42,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:47,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:47,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 08:40:47,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:40:47,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 08:40:47,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:47,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:47,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:40:47,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 08:40:47,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:40:47,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:47,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:47,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:47,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:47,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:47,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:47,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:40:47,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:47,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:47,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:47,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:47,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:47,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:47,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 08:40:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:47,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:47,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:47,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:40:47,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:47,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 08:40:47,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:47,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:47,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:40:47,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:40:47,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:40:47,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:47,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 08:40:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:47,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:47,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:47,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:47,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:40:47,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:47,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 08:40:47,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:47,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:47,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:47,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:40:47,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:47,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:47,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 08:40:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:47,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:47,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:47,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:47,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 08:40:47,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:47,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 08:40:47,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:47,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:40:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:47,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:47,534 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 0 proven. 281 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2020-10-28 08:40:47,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946416089] [2020-10-28 08:40:47,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:47,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 08:40:47,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748156518] [2020-10-28 08:40:47,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 08:40:47,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:47,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 08:40:47,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:40:47,537 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 11 states. [2020-10-28 08:40:47,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:47,938 INFO L93 Difference]: Finished difference Result 109 states and 119 transitions. [2020-10-28 08:40:47,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 08:40:47,939 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-10-28 08:40:47,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:47,940 INFO L225 Difference]: With dead ends: 109 [2020-10-28 08:40:47,940 INFO L226 Difference]: Without dead ends: 64 [2020-10-28 08:40:47,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 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 08:40:47,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-28 08:40:47,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-28 08:40:47,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-28 08:40:47,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-28 08:40:47,947 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 98 [2020-10-28 08:40:47,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:47,947 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-28 08:40:47,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 08:40:47,948 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-28 08:40:47,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 08:40:47,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:47,949 INFO L422 BasicCegarLoop]: trace histogram [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 08:40:47,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 08:40:47,949 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:47,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:47,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1833278981, now seen corresponding path program 15 times [2020-10-28 08:40:47,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:47,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256287176] [2020-10-28 08:40:47,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:47,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:48,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:48,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:48,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:52,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:52,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 08:40:52,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:40:52,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 08:40:52,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:52,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:52,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:40:52,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 08:40:52,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:40:52,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:53,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:53,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:53,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:53,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:53,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:53,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:40:53,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:53,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:53,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:53,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:53,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:53,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:53,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 08:40:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:53,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:53,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:53,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:53,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:40:53,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:53,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 08:40:53,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:53,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:53,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:53,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:53,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:53,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:53,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 08:40:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:53,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:53,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:53,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:53,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:40:53,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:53,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 08:40:53,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:53,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:53,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:53,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:53,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:53,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:53,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 08:40:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:53,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:53,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:53,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:53,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:40:53,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:53,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 08:40:53,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:53,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:53,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:53,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:40:53,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:53,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:53,221 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2020-10-28 08:40:53,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256287176] [2020-10-28 08:40:53,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:53,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 08:40:53,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37511396] [2020-10-28 08:40:53,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 08:40:53,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:53,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 08:40:53,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:40:53,223 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 11 states. [2020-10-28 08:40:53,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:53,369 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2020-10-28 08:40:53,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 08:40:53,370 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-28 08:40:53,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:53,371 INFO L225 Difference]: With dead ends: 95 [2020-10-28 08:40:53,371 INFO L226 Difference]: Without dead ends: 66 [2020-10-28 08:40:53,372 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 08:40:53,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-28 08:40:53,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-28 08:40:53,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-28 08:40:53,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-28 08:40:53,378 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 104 [2020-10-28 08:40:53,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:53,379 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-28 08:40:53,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 08:40:53,379 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-28 08:40:53,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 08:40:53,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:53,380 INFO L422 BasicCegarLoop]: trace histogram [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 08:40:53,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 08:40:53,380 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:53,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:53,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1381739271, now seen corresponding path program 16 times [2020-10-28 08:40:53,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:53,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744242701] [2020-10-28 08:40:53,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:53,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:53,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:53,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:53,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:58,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:58,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 08:40:58,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:40:58,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 08:40:58,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:58,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:58,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:40:58,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:40:58,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:40:58,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:58,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:40:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:58,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:58,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:58,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:40:58,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:40:58,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:40:58,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:58,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:58,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:58,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:40:58,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:58,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:58,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 08:40:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:58,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:58,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:58,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:58,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:40:58,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:58,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 08:40:58,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:58,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:58,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:58,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:40:58,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:58,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:58,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 08:40:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:58,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:58,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:58,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:58,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:40:58,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:58,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 08:40:58,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:58,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:58,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:58,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:40:58,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:58,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:58,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 08:40:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:58,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:58,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:58,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:40:58,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:40:58,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:40:58,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 08:40:58,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:40:58,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:40:58,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:40:58,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:40:58,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:40:58,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:40:58,593 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-28 08:40:58,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744242701] [2020-10-28 08:40:58,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:40:58,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 08:40:58,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828969002] [2020-10-28 08:40:58,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 08:40:58,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:40:58,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 08:40:58,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:40:58,595 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 8 states. [2020-10-28 08:40:58,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:40:58,725 INFO L93 Difference]: Finished difference Result 118 states and 126 transitions. [2020-10-28 08:40:58,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 08:40:58,725 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 106 [2020-10-28 08:40:58,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:40:58,726 INFO L225 Difference]: With dead ends: 118 [2020-10-28 08:40:58,726 INFO L226 Difference]: Without dead ends: 68 [2020-10-28 08:40:58,727 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 08:40:58,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-28 08:40:58,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-28 08:40:58,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-28 08:40:58,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-28 08:40:58,732 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 106 [2020-10-28 08:40:58,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:40:58,733 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-28 08:40:58,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 08:40:58,733 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-28 08:40:58,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-28 08:40:58,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:40:58,734 INFO L422 BasicCegarLoop]: trace histogram [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 08:40:58,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 08:40:58,735 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:40:58,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:40:58,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1574943653, now seen corresponding path program 17 times [2020-10-28 08:40:58,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:40:58,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182128213] [2020-10-28 08:40:58,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:40:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:40:58,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:58,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:58,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:40:58,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:03,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:03,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 08:41:03,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:03,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 08:41:03,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:03,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:03,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:41:03,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 08:41:03,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 08:41:03,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:03,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:03,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:03,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:03,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:03,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:03,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:41:03,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:03,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:03,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:03,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:03,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:03,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:03,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 08:41:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:03,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:03,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:03,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:03,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:03,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 08:41:03,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:03,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:03,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:41:03,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:41:03,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 08:41:03,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:03,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 08:41:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:03,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:03,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:03,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:03,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:03,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:03,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 08:41:03,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:03,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:03,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:03,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:41:03,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:03,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:03,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 08:41:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:03,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:03,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:04,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:04,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:41:04,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:04,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 08:41:04,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:04,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:04,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:04,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:41:04,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:04,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:04,016 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2020-10-28 08:41:04,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182128213] [2020-10-28 08:41:04,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:04,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:41:04,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51101806] [2020-10-28 08:41:04,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:41:04,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:04,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:41:04,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:41:04,018 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 12 states. [2020-10-28 08:41:04,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:04,452 INFO L93 Difference]: Finished difference Result 119 states and 129 transitions. [2020-10-28 08:41:04,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:41:04,453 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-10-28 08:41:04,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:04,454 INFO L225 Difference]: With dead ends: 119 [2020-10-28 08:41:04,454 INFO L226 Difference]: Without dead ends: 70 [2020-10-28 08:41:04,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 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 08:41:04,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-28 08:41:04,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-28 08:41:04,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-28 08:41:04,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-28 08:41:04,461 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 108 [2020-10-28 08:41:04,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:04,462 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-28 08:41:04,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:41:04,462 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-28 08:41:04,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 08:41:04,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:04,463 INFO L422 BasicCegarLoop]: trace histogram [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 08:41:04,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 08:41:04,463 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:04,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:04,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1033456985, now seen corresponding path program 18 times [2020-10-28 08:41:04,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:04,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474119961] [2020-10-28 08:41:04,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:04,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:04,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:04,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:04,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:09,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:09,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 08:41:09,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:09,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:41:09,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:09,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:09,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:41:09,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 08:41:09,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 08:41:09,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:09,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:09,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:09,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:09,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:09,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:09,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:09,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:09,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:09,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:09,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:09,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:09,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:09,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 08:41:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:09,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:09,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:09,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 08:41:09,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:09,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 08:41:09,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:09,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:09,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:41:09,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:41:09,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 08:41:09,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:09,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 08:41:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:09,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:09,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:09,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:09,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 08:41:09,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:09,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 08:41:09,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:09,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:09,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:09,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 08:41:09,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:09,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:09,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 08:41:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:09,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:09,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:09,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:09,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 08:41:09,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:09,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 08:41:09,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:09,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:09,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:09,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 08:41:09,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:09,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:09,767 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 0 proven. 449 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2020-10-28 08:41:09,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474119961] [2020-10-28 08:41:09,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:09,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 08:41:09,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406708974] [2020-10-28 08:41:09,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 08:41:09,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:09,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 08:41:09,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:41:09,769 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 13 states. [2020-10-28 08:41:10,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:10,236 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2020-10-28 08:41:10,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 08:41:10,236 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 114 [2020-10-28 08:41:10,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:10,237 INFO L225 Difference]: With dead ends: 123 [2020-10-28 08:41:10,237 INFO L226 Difference]: Without dead ends: 72 [2020-10-28 08:41:10,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 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 08:41:10,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-28 08:41:10,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-28 08:41:10,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-28 08:41:10,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-28 08:41:10,248 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 114 [2020-10-28 08:41:10,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:10,249 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-28 08:41:10,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 08:41:10,249 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-28 08:41:10,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-28 08:41:10,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:10,251 INFO L422 BasicCegarLoop]: trace histogram [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 08:41:10,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 08:41:10,253 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:10,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:10,254 INFO L82 PathProgramCache]: Analyzing trace with hash -381329449, now seen corresponding path program 19 times [2020-10-28 08:41:10,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:10,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205605453] [2020-10-28 08:41:10,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:10,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:10,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:10,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:10,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:15,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:15,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 08:41:15,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:15,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:41:15,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:15,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:15,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:41:15,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-28 08:41:15,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 08:41:15,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:15,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:15,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:15,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:15,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:15,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:15,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:41:15,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:15,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:15,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:15,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:15,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:15,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:15,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 08:41:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:15,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:15,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:15,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:15,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:15,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:15,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 08:41:15,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:15,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:15,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:15,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:15,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:15,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:15,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 08:41:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:15,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:15,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:15,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:15,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:15,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:15,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 08:41:15,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:15,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:15,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:15,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:15,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:15,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:15,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 08:41:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:15,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:15,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:15,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:15,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:15,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:15,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 08:41:15,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:15,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:15,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:15,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:15,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:15,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:15,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2020-10-28 08:41:15,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205605453] [2020-10-28 08:41:15,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:15,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:41:15,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128715299] [2020-10-28 08:41:15,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:41:15,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:15,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:41:15,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:41:15,598 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-10-28 08:41:15,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:15,760 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2020-10-28 08:41:15,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:41:15,761 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 120 [2020-10-28 08:41:15,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:15,762 INFO L225 Difference]: With dead ends: 107 [2020-10-28 08:41:15,762 INFO L226 Difference]: Without dead ends: 74 [2020-10-28 08:41:15,763 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 08:41:15,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-28 08:41:15,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-28 08:41:15,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-28 08:41:15,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-28 08:41:15,768 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 120 [2020-10-28 08:41:15,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:15,768 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-28 08:41:15,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:41:15,769 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-28 08:41:15,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 08:41:15,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:15,770 INFO L422 BasicCegarLoop]: trace histogram [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 08:41:15,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 08:41:15,770 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:15,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:15,771 INFO L82 PathProgramCache]: Analyzing trace with hash 101133269, now seen corresponding path program 20 times [2020-10-28 08:41:15,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:15,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656460728] [2020-10-28 08:41:15,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:15,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:15,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:15,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:15,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:20,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:20,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 08:41:20,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:20,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 08:41:20,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:20,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:20,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:41:20,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-28 08:41:20,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 08:41:20,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:20,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:20,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:20,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:20,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:20,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:20,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:20,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:20,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:20,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:20,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:20,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:20,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:20,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 08:41:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:20,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:20,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:20,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:20,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:20,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:20,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 08:41:20,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:20,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:20,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:20,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:20,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:20,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:20,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 08:41:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:20,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:20,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:21,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:21,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:21,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:21,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 08:41:21,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:21,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:21,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:21,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:21,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:21,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:21,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 08:41:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:21,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:21,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:21,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:21,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:21,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:21,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 08:41:21,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:21,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:21,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:21,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:21,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:21,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:21,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2020-10-28 08:41:21,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656460728] [2020-10-28 08:41:21,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:21,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 08:41:21,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721017284] [2020-10-28 08:41:21,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 08:41:21,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:21,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 08:41:21,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:41:21,084 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 13 states. [2020-10-28 08:41:21,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:21,274 INFO L93 Difference]: Finished difference Result 109 states and 114 transitions. [2020-10-28 08:41:21,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 08:41:21,275 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 122 [2020-10-28 08:41:21,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:21,276 INFO L225 Difference]: With dead ends: 109 [2020-10-28 08:41:21,276 INFO L226 Difference]: Without dead ends: 76 [2020-10-28 08:41:21,277 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 08:41:21,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-28 08:41:21,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-28 08:41:21,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-28 08:41:21,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-28 08:41:21,284 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 122 [2020-10-28 08:41:21,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:21,284 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-28 08:41:21,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 08:41:21,285 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-28 08:41:21,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 08:41:21,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:21,286 INFO L422 BasicCegarLoop]: trace histogram [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 08:41:21,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 08:41:21,287 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:21,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:21,287 INFO L82 PathProgramCache]: Analyzing trace with hash -108662701, now seen corresponding path program 21 times [2020-10-28 08:41:21,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:21,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464071002] [2020-10-28 08:41:21,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:21,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:21,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:21,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:21,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:26,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:26,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 08:41:26,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:26,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 08:41:26,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:26,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:26,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:41:26,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:41:26,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:41:26,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:26,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:26,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:26,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:26,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:26,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:26,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:26,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:26,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:26,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:26,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:26,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:26,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:26,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 08:41:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:26,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:26,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:26,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:26,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:26,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:26,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 08:41:26,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:26,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:26,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:26,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:26,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:26,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:26,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 08:41:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:26,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:26,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:26,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:26,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:26,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:26,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 08:41:26,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:26,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:26,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:26,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:26,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:26,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:26,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-28 08:41:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:26,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:26,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:26,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:26,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:26,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:26,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 08:41:26,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:26,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:26,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:26,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:26,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:26,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:26,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-28 08:41:26,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464071002] [2020-10-28 08:41:26,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:26,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 08:41:26,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740544608] [2020-10-28 08:41:26,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 08:41:26,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:26,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 08:41:26,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:41:26,543 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 9 states. [2020-10-28 08:41:26,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:26,695 INFO L93 Difference]: Finished difference Result 136 states and 144 transitions. [2020-10-28 08:41:26,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 08:41:26,696 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 124 [2020-10-28 08:41:26,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:26,697 INFO L225 Difference]: With dead ends: 136 [2020-10-28 08:41:26,697 INFO L226 Difference]: Without dead ends: 78 [2020-10-28 08:41:26,697 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 08:41:26,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-28 08:41:26,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-28 08:41:26,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-28 08:41:26,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-28 08:41:26,708 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 124 [2020-10-28 08:41:26,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:26,708 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-28 08:41:26,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 08:41:26,708 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-28 08:41:26,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-28 08:41:26,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:26,712 INFO L422 BasicCegarLoop]: trace histogram [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 08:41:26,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 08:41:26,712 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:26,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:26,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1312978123, now seen corresponding path program 22 times [2020-10-28 08:41:26,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:26,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067320460] [2020-10-28 08:41:26,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:26,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:26,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:26,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:27,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:31,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:31,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 08:41:31,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:31,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 08:41:31,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:31,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:31,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:41:31,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 08:41:31,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 08:41:31,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:31,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:31,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:31,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:31,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:31,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:31,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:31,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:31,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:31,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:31,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:31,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:31,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:31,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 08:41:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:31,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:31,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:31,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:31,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:31,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:31,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 08:41:31,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:31,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:31,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:31,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:31,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:31,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:31,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 08:41:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:31,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:31,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:31,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:31,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:31,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 08:41:31,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:31,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:41:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:41:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 08:41:31,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:32,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 08:41:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:32,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:32,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:32,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:32,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 08:41:32,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:32,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 08:41:32,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:32,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 08:41:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:32,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:32,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 224 proven. 324 refuted. 0 times theorem prover too weak. 563 trivial. 0 not checked. [2020-10-28 08:41:32,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067320460] [2020-10-28 08:41:32,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:32,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 08:41:32,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479286728] [2020-10-28 08:41:32,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 08:41:32,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:32,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 08:41:32,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:41:32,078 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 14 states. [2020-10-28 08:41:32,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:32,636 INFO L93 Difference]: Finished difference Result 137 states and 147 transitions. [2020-10-28 08:41:32,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 08:41:32,637 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 126 [2020-10-28 08:41:32,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:32,638 INFO L225 Difference]: With dead ends: 137 [2020-10-28 08:41:32,638 INFO L226 Difference]: Without dead ends: 80 [2020-10-28 08:41:32,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-28 08:41:32,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-28 08:41:32,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-28 08:41:32,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-28 08:41:32,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-28 08:41:32,645 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 126 [2020-10-28 08:41:32,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:32,645 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-28 08:41:32,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 08:41:32,645 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-28 08:41:32,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-28 08:41:32,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:32,647 INFO L422 BasicCegarLoop]: trace histogram [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 08:41:32,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 08:41:32,647 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:32,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:32,647 INFO L82 PathProgramCache]: Analyzing trace with hash -902723917, now seen corresponding path program 23 times [2020-10-28 08:41:32,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:32,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434878524] [2020-10-28 08:41:32,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:32,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:32,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:32,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:32,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:37,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:37,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 08:41:37,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:37,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 08:41:37,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:37,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:37,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:41:37,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 08:41:37,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 08:41:37,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:37,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:37,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:37,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:37,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:37,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:37,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:37,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:37,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:37,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:37,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:37,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:37,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:37,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 08:41:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:37,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:37,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:37,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:37,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:41:37,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:37,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 08:41:37,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:37,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:37,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:37,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:37,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:37,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:37,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 08:41:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:37,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:37,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:37,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:37,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:41:37,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:37,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 08:41:37,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:37,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:37,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:37,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:37,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:37,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:37,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 08:41:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:37,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:37,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:37,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:37,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:41:37,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:37,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 08:41:37,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:37,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:37,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:37,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:41:37,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:37,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:38,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1306 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1206 trivial. 0 not checked. [2020-10-28 08:41:38,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434878524] [2020-10-28 08:41:38,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:38,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 08:41:38,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395524943] [2020-10-28 08:41:38,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 08:41:38,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:38,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 08:41:38,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:41:38,005 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 14 states. [2020-10-28 08:41:38,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:38,204 INFO L93 Difference]: Finished difference Result 117 states and 122 transitions. [2020-10-28 08:41:38,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 08:41:38,205 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2020-10-28 08:41:38,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:38,207 INFO L225 Difference]: With dead ends: 117 [2020-10-28 08:41:38,207 INFO L226 Difference]: Without dead ends: 82 [2020-10-28 08:41:38,207 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 08:41:38,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-28 08:41:38,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-28 08:41:38,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-28 08:41:38,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-28 08:41:38,213 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 132 [2020-10-28 08:41:38,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:38,214 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-28 08:41:38,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 08:41:38,214 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-28 08:41:38,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 08:41:38,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:38,215 INFO L422 BasicCegarLoop]: trace histogram [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 08:41:38,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 08:41:38,215 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:38,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:38,215 INFO L82 PathProgramCache]: Analyzing trace with hash -633668687, now seen corresponding path program 24 times [2020-10-28 08:41:38,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:38,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878510110] [2020-10-28 08:41:38,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:38,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:38,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:38,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:38,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:43,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:43,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 08:41:43,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:43,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:41:43,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:43,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:43,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:41:43,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:41:43,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:41:43,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:43,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:43,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:43,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:43,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:43,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:43,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:41:43,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:43,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:43,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:43,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:43,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:43,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:43,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 08:41:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:43,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:43,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:43,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:43,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:41:43,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:43,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 08:41:43,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:43,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:43,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:43,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:41:43,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:43,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:43,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 08:41:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:43,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:43,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:43,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:43,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:41:43,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:43,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 08:41:43,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:43,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:43,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:43,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:41:43,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:43,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:43,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 08:41:43,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:43,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:43,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:43,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:43,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:41:43,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:43,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 08:41:43,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:43,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:43,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:43,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:41:43,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:43,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:43,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1327 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2020-10-28 08:41:43,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878510110] [2020-10-28 08:41:43,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:43,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:41:43,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633426005] [2020-10-28 08:41:43,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:41:43,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:43,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:41:43,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:41:43,476 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 10 states. [2020-10-28 08:41:43,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:43,631 INFO L93 Difference]: Finished difference Result 146 states and 154 transitions. [2020-10-28 08:41:43,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 08:41:43,632 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-10-28 08:41:43,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:43,633 INFO L225 Difference]: With dead ends: 146 [2020-10-28 08:41:43,633 INFO L226 Difference]: Without dead ends: 84 [2020-10-28 08:41:43,634 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 08:41:43,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-28 08:41:43,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-28 08:41:43,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-28 08:41:43,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-28 08:41:43,641 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 134 [2020-10-28 08:41:43,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:43,642 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-28 08:41:43,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:41:43,642 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-28 08:41:43,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-28 08:41:43,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:43,643 INFO L422 BasicCegarLoop]: trace histogram [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 08:41:43,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 08:41:43,643 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:43,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:43,644 INFO L82 PathProgramCache]: Analyzing trace with hash -14687213, now seen corresponding path program 25 times [2020-10-28 08:41:43,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:43,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581556038] [2020-10-28 08:41:43,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:43,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:43,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:43,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:43,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:48,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:48,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 08:41:48,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:48,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 08:41:48,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:48,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:48,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 08:41:48,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 08:41:48,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 08:41:48,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:48,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:48,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:48,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:48,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:48,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:48,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:48,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:48,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:48,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:48,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:48,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:48,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:48,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:48,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 08:41:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:48,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:48,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:48,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:41:48,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:48,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 08:41:48,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:48,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:48,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 08:41:48,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:41:48,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 08:41:48,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:48,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 08:41:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:48,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:48,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:48,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:48,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:41:48,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:48,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 08:41:48,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:48,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:48,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:48,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:41:48,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:48,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:48,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 08:41:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:48,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:48,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:48,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:48,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 08:41:48,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:48,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 08:41:48,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:48,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:48,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:48,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:41:48,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:48,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:49,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 657 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2020-10-28 08:41:49,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581556038] [2020-10-28 08:41:49,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:49,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 08:41:49,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025803143] [2020-10-28 08:41:49,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 08:41:49,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:49,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 08:41:49,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:41:49,009 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 15 states. [2020-10-28 08:41:49,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:49,603 INFO L93 Difference]: Finished difference Result 147 states and 157 transitions. [2020-10-28 08:41:49,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 08:41:49,604 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 136 [2020-10-28 08:41:49,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:49,605 INFO L225 Difference]: With dead ends: 147 [2020-10-28 08:41:49,606 INFO L226 Difference]: Without dead ends: 86 [2020-10-28 08:41:49,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 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 08:41:49,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-28 08:41:49,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-28 08:41:49,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-28 08:41:49,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-28 08:41:49,613 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 136 [2020-10-28 08:41:49,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:49,613 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-28 08:41:49,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 08:41:49,613 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-28 08:41:49,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-28 08:41:49,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:49,614 INFO L422 BasicCegarLoop]: trace histogram [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 08:41:49,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 08:41:49,614 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:49,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:49,615 INFO L82 PathProgramCache]: Analyzing trace with hash 2097111057, now seen corresponding path program 26 times [2020-10-28 08:41:49,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:49,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034943934] [2020-10-28 08:41:49,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:49,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:49,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:49,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:49,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:54,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:54,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 08:41:54,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:41:54,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 08:41:54,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:54,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:54,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:41:54,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-28 08:41:54,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 08:41:54,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:54,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:41:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:54,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:54,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:54,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:41:54,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:54,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:41:54,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:54,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:54,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:54,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:54,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:54,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:54,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 08:41:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:54,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:54,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:54,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:54,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 08:41:54,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:54,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 08:41:54,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:54,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:54,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:54,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:41:54,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:54,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:54,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 08:41:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:54,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:54,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:54,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 08:41:54,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:41:54,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 08:41:54,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:54,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:54,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:41:54,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:41:54,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 08:41:54,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:54,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-28 08:41:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:54,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:54,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:55,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:41:55,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 08:41:55,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:41:55,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 08:41:55,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:41:55,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:41:55,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:41:55,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 08:41:55,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:41:55,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:41:55,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1553 backedges. 316 proven. 460 refuted. 0 times theorem prover too weak. 777 trivial. 0 not checked. [2020-10-28 08:41:55,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034943934] [2020-10-28 08:41:55,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:41:55,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 08:41:55,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340854360] [2020-10-28 08:41:55,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 08:41:55,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:41:55,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 08:41:55,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:41:55,035 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 16 states. [2020-10-28 08:41:55,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:41:55,663 INFO L93 Difference]: Finished difference Result 151 states and 161 transitions. [2020-10-28 08:41:55,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 08:41:55,663 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 142 [2020-10-28 08:41:55,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:41:55,665 INFO L225 Difference]: With dead ends: 151 [2020-10-28 08:41:55,665 INFO L226 Difference]: Without dead ends: 88 [2020-10-28 08:41:55,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-28 08:41:55,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-28 08:41:55,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-28 08:41:55,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-28 08:41:55,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-28 08:41:55,675 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 142 [2020-10-28 08:41:55,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:41:55,675 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-28 08:41:55,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 08:41:55,675 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-28 08:41:55,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-28 08:41:55,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:41:55,676 INFO L422 BasicCegarLoop]: trace histogram [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 08:41:55,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 08:41:55,677 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:41:55,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:41:55,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1488856463, now seen corresponding path program 27 times [2020-10-28 08:41:55,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:41:55,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540686387] [2020-10-28 08:41:55,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:41:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:41:55,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:55,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:55,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:41:55,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:00,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:00,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-28 08:42:00,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:00,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 08:42:00,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:00,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:00,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 08:42:00,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-28 08:42:00,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 08:42:00,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:00,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:00,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:00,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:00,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:00,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:00,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:00,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:00,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:00,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:00,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:00,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:00,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:00,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 08:42:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:00,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:00,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:00,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:00,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:00,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:00,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 08:42:00,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:00,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:00,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:00,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:00,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:00,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:00,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 08:42:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:00,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:00,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:01,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:01,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:01,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:01,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 08:42:01,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:01,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:01,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:01,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:01,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:01,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:01,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-28 08:42:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:01,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:01,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:01,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:01,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:01,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:01,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 08:42:01,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:01,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:01,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:01,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:01,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:01,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:01,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1784 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1663 trivial. 0 not checked. [2020-10-28 08:42:01,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540686387] [2020-10-28 08:42:01,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:01,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 08:42:01,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191999072] [2020-10-28 08:42:01,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 08:42:01,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:01,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 08:42:01,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:42:01,073 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 15 states. [2020-10-28 08:42:01,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:01,264 INFO L93 Difference]: Finished difference Result 129 states and 134 transitions. [2020-10-28 08:42:01,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 08:42:01,265 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 148 [2020-10-28 08:42:01,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:01,266 INFO L225 Difference]: With dead ends: 129 [2020-10-28 08:42:01,266 INFO L226 Difference]: Without dead ends: 90 [2020-10-28 08:42:01,267 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 08:42:01,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-28 08:42:01,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-28 08:42:01,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-28 08:42:01,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-28 08:42:01,278 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 148 [2020-10-28 08:42:01,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:01,279 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-28 08:42:01,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 08:42:01,279 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-28 08:42:01,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-28 08:42:01,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:01,280 INFO L422 BasicCegarLoop]: trace histogram [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 08:42:01,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 08:42:01,280 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:01,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:01,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1319947379, now seen corresponding path program 28 times [2020-10-28 08:42:01,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:01,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722620395] [2020-10-28 08:42:01,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:01,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:01,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:01,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:01,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:06,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:06,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 08:42:06,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:06,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 08:42:06,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:06,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:06,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:42:06,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-28 08:42:06,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 08:42:06,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:06,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:06,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:06,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:06,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:06,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:06,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:42:06,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:06,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:06,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:06,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:06,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:06,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:06,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 08:42:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:06,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:06,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:06,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:06,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:06,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:06,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 08:42:06,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:06,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:06,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:06,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:06,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:06,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:06,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 08:42:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:06,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:06,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:06,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:06,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:06,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:06,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 08:42:06,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:06,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:06,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:06,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:06,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:06,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:06,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-28 08:42:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:06,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:06,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:06,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:06,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:06,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:06,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 08:42:06,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:06,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:06,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:06,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:06,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:06,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:06,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1663 trivial. 0 not checked. [2020-10-28 08:42:06,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722620395] [2020-10-28 08:42:06,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:06,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 08:42:06,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432494864] [2020-10-28 08:42:06,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 08:42:06,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:06,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 08:42:06,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:42:06,710 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 16 states. [2020-10-28 08:42:06,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:06,901 INFO L93 Difference]: Finished difference Result 131 states and 136 transitions. [2020-10-28 08:42:06,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 08:42:06,902 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 150 [2020-10-28 08:42:06,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:06,903 INFO L225 Difference]: With dead ends: 131 [2020-10-28 08:42:06,903 INFO L226 Difference]: Without dead ends: 92 [2020-10-28 08:42:06,904 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 08:42:06,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-28 08:42:06,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-28 08:42:06,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-28 08:42:06,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-28 08:42:06,910 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 150 [2020-10-28 08:42:06,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:06,910 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-28 08:42:06,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 08:42:06,911 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-28 08:42:06,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 08:42:06,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:06,912 INFO L422 BasicCegarLoop]: trace histogram [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 08:42:06,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 08:42:06,912 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:06,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:06,913 INFO L82 PathProgramCache]: Analyzing trace with hash 953989643, now seen corresponding path program 29 times [2020-10-28 08:42:06,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:06,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022575536] [2020-10-28 08:42:06,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:06,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:06,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:07,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:07,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:11,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:11,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 08:42:11,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:11,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 08:42:11,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:11,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:11,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:42:11,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:42:11,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:42:11,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:12,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:12,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:12,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:12,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:12,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:12,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:42:12,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:12,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:12,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:12,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 08:42:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:12,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:12,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:12,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:12,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:12,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:12,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 08:42:12,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:12,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:12,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:12,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:12,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:12,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:12,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 08:42:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:12,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:12,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:12,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:12,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:12,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:12,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 08:42:12,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:12,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:12,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:12,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:12,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:12,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:12,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-28 08:42:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:12,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:12,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:12,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:12,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:12,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:12,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 08:42:12,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:12,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:12,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:12,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:12,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:12,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:12,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1832 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1783 trivial. 0 not checked. [2020-10-28 08:42:12,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022575536] [2020-10-28 08:42:12,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:12,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 08:42:12,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880064600] [2020-10-28 08:42:12,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 08:42:12,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:12,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 08:42:12,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:42:12,250 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 11 states. [2020-10-28 08:42:12,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:12,376 INFO L93 Difference]: Finished difference Result 164 states and 172 transitions. [2020-10-28 08:42:12,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 08:42:12,377 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 152 [2020-10-28 08:42:12,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:12,378 INFO L225 Difference]: With dead ends: 164 [2020-10-28 08:42:12,378 INFO L226 Difference]: Without dead ends: 94 [2020-10-28 08:42:12,378 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 08:42:12,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-28 08:42:12,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-28 08:42:12,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-28 08:42:12,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-28 08:42:12,389 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 152 [2020-10-28 08:42:12,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:12,389 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-28 08:42:12,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 08:42:12,390 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-28 08:42:12,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 08:42:12,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:12,391 INFO L422 BasicCegarLoop]: trace histogram [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 08:42:12,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 08:42:12,391 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:12,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:12,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1869541907, now seen corresponding path program 30 times [2020-10-28 08:42:12,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:12,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956942469] [2020-10-28 08:42:12,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:12,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:12,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:12,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:12,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:17,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:17,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 08:42:17,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:17,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 08:42:17,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:17,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:17,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 08:42:17,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 08:42:17,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 08:42:17,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:17,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:17,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:17,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:17,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:17,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:17,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:42:17,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:17,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:17,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:17,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:17,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:17,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:17,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:42:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:17,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:17,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:17,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:17,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:17,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 08:42:17,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:17,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:17,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 08:42:17,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:42:17,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 08:42:17,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:17,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 08:42:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:17,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:17,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:17,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:17,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:17,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:17,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 08:42:17,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:17,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:17,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:17,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:17,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:17,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:17,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-28 08:42:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:17,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:17,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:17,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:17,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 08:42:17,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:17,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 08:42:17,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:17,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:17,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:17,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:42:17,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:17,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:17,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 0 proven. 905 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2020-10-28 08:42:17,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956942469] [2020-10-28 08:42:17,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:17,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 08:42:17,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865434590] [2020-10-28 08:42:17,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 08:42:17,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:17,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 08:42:17,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:42:17,872 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 17 states. [2020-10-28 08:42:18,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:18,574 INFO L93 Difference]: Finished difference Result 165 states and 175 transitions. [2020-10-28 08:42:18,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 08:42:18,575 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 154 [2020-10-28 08:42:18,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:18,576 INFO L225 Difference]: With dead ends: 165 [2020-10-28 08:42:18,576 INFO L226 Difference]: Without dead ends: 96 [2020-10-28 08:42:18,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 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 08:42:18,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-28 08:42:18,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-28 08:42:18,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-28 08:42:18,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-28 08:42:18,584 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 154 [2020-10-28 08:42:18,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:18,584 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-28 08:42:18,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 08:42:18,584 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-28 08:42:18,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 08:42:18,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:18,585 INFO L422 BasicCegarLoop]: trace histogram [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 08:42:18,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 08:42:18,586 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:18,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:18,586 INFO L82 PathProgramCache]: Analyzing trace with hash 97238123, now seen corresponding path program 31 times [2020-10-28 08:42:18,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:18,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524843260] [2020-10-28 08:42:18,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:18,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:18,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:18,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:18,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:23,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:23,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 08:42:23,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:23,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 08:42:23,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:23,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:23,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 08:42:23,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 08:42:23,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 08:42:23,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:23,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:23,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:23,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:23,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:23,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:23,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:23,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:23,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:23,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:23,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:23,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:23,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:23,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:42:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:23,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:23,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:23,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:23,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 08:42:23,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:23,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 08:42:23,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:23,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:23,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:23,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:23,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:23,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:23,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 08:42:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:23,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:23,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:23,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 08:42:23,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:23,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 08:42:23,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:23,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:23,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 08:42:23,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:42:23,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 08:42:23,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:23,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 08:42:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:23,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:24,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:24,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:24,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 08:42:24,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:24,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 08:42:24,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:24,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:24,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:24,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 08:42:24,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:24,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:24,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2096 backedges. 424 proven. 620 refuted. 0 times theorem prover too weak. 1052 trivial. 0 not checked. [2020-10-28 08:42:24,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524843260] [2020-10-28 08:42:24,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:24,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 08:42:24,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647263818] [2020-10-28 08:42:24,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 08:42:24,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:24,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 08:42:24,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:42:24,083 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 18 states. [2020-10-28 08:42:24,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:24,841 INFO L93 Difference]: Finished difference Result 169 states and 179 transitions. [2020-10-28 08:42:24,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 08:42:24,842 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 160 [2020-10-28 08:42:24,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:24,843 INFO L225 Difference]: With dead ends: 169 [2020-10-28 08:42:24,843 INFO L226 Difference]: Without dead ends: 98 [2020-10-28 08:42:24,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 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 08:42:24,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-28 08:42:24,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-28 08:42:24,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-28 08:42:24,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-28 08:42:24,851 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 160 [2020-10-28 08:42:24,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:24,851 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-28 08:42:24,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 08:42:24,851 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-28 08:42:24,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-28 08:42:24,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:24,852 INFO L422 BasicCegarLoop]: trace histogram [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 08:42:24,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 08:42:24,853 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:24,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:24,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1697328023, now seen corresponding path program 32 times [2020-10-28 08:42:24,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:24,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661546778] [2020-10-28 08:42:24,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:24,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:24,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:24,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:25,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:29,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:29,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 08:42:29,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:29,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 08:42:29,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:29,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:29,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 08:42:29,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-28 08:42:29,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 08:42:29,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:30,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:30,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:30,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:30,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:30,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:30,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:42:30,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:30,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:30,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:30,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:30,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:30,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:30,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:42:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:30,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:30,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:30,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:30,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:42:30,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:30,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 08:42:30,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:30,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:30,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:30,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:30,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:30,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:30,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 08:42:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:30,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:30,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:30,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:30,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:42:30,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:30,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 08:42:30,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:30,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:30,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:30,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:30,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:30,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:30,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-28 08:42:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:30,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:30,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:30,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:30,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:42:30,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:30,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 08:42:30,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:30,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:30,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:30,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:42:30,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:30,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:30,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2363 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2194 trivial. 0 not checked. [2020-10-28 08:42:30,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661546778] [2020-10-28 08:42:30,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:30,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 08:42:30,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588849149] [2020-10-28 08:42:30,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 08:42:30,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:30,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 08:42:30,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:42:30,381 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 17 states. [2020-10-28 08:42:30,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:30,619 INFO L93 Difference]: Finished difference Result 143 states and 148 transitions. [2020-10-28 08:42:30,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 08:42:30,620 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 166 [2020-10-28 08:42:30,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:30,621 INFO L225 Difference]: With dead ends: 143 [2020-10-28 08:42:30,622 INFO L226 Difference]: Without dead ends: 100 [2020-10-28 08:42:30,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:42:30,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-28 08:42:30,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-28 08:42:30,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-28 08:42:30,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-28 08:42:30,629 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 166 [2020-10-28 08:42:30,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:30,630 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-28 08:42:30,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 08:42:30,630 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-28 08:42:30,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-28 08:42:30,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:30,631 INFO L422 BasicCegarLoop]: trace histogram [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 08:42:30,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-28 08:42:30,631 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:30,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:30,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1656845287, now seen corresponding path program 33 times [2020-10-28 08:42:30,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:30,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456796694] [2020-10-28 08:42:30,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:30,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:30,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:30,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:31,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:35,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:35,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-28 08:42:35,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:35,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 08:42:35,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:35,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:35,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 08:42:35,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-28 08:42:35,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 08:42:35,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:35,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:35,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:35,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:35,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:35,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:35,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:42:35,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:35,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:35,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:35,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:35,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:35,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:35,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:42:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:35,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:35,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:36,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:36,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:42:36,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:36,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 08:42:36,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:36,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:36,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:36,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:36,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:36,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:36,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 08:42:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:36,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:36,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:36,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:36,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:42:36,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:36,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 08:42:36,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:36,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:36,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:36,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:36,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:36,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:36,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-28 08:42:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:36,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:36,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:36,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:36,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:42:36,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:36,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 08:42:36,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:36,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:36,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:36,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:42:36,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:36,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:36,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2390 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2194 trivial. 0 not checked. [2020-10-28 08:42:36,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456796694] [2020-10-28 08:42:36,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:36,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 08:42:36,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836157803] [2020-10-28 08:42:36,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 08:42:36,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:36,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 08:42:36,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:42:36,175 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 18 states. [2020-10-28 08:42:36,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:36,395 INFO L93 Difference]: Finished difference Result 145 states and 150 transitions. [2020-10-28 08:42:36,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 08:42:36,396 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 168 [2020-10-28 08:42:36,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:36,397 INFO L225 Difference]: With dead ends: 145 [2020-10-28 08:42:36,397 INFO L226 Difference]: Without dead ends: 102 [2020-10-28 08:42:36,398 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 08:42:36,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-28 08:42:36,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-28 08:42:36,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-28 08:42:36,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-28 08:42:36,405 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 168 [2020-10-28 08:42:36,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:36,406 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-28 08:42:36,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 08:42:36,406 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-28 08:42:36,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-28 08:42:36,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:36,408 INFO L422 BasicCegarLoop]: trace histogram [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 08:42:36,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-28 08:42:36,408 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:36,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:36,409 INFO L82 PathProgramCache]: Analyzing trace with hash -503043099, now seen corresponding path program 34 times [2020-10-28 08:42:36,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:36,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405301111] [2020-10-28 08:42:36,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:36,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:36,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:36,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:36,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:41,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:41,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-28 08:42:41,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:41,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 08:42:41,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:41,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:41,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:42:41,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:42:41,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 08:42:41,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:41,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:41,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:41,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:41,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:41,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:41,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:41,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:41,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:41,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:41,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:41,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:41,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:41,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 08:42:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:41,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:41,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:41,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:41,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:42:41,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:41,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 08:42:41,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:41,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:41,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:41,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:42:41,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:41,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:41,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 08:42:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:41,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:41,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:41,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:41,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:42:41,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:41,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 08:42:41,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:41,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:41,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:41,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:42:41,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:41,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:41,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-28 08:42:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:41,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:41,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:41,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:41,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:42:41,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:41,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 08:42:41,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:41,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:41,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:41,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:42:41,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:41,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:41,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2419 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 2355 trivial. 0 not checked. [2020-10-28 08:42:41,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405301111] [2020-10-28 08:42:41,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:41,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:42:41,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742550546] [2020-10-28 08:42:41,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:42:41,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:41,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:42:41,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:42:41,820 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 12 states. [2020-10-28 08:42:41,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:41,993 INFO L93 Difference]: Finished difference Result 182 states and 190 transitions. [2020-10-28 08:42:41,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:42:41,994 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 170 [2020-10-28 08:42:41,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:41,995 INFO L225 Difference]: With dead ends: 182 [2020-10-28 08:42:41,995 INFO L226 Difference]: Without dead ends: 104 [2020-10-28 08:42:41,996 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 08:42:41,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-28 08:42:42,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-28 08:42:42,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-28 08:42:42,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-28 08:42:42,003 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 170 [2020-10-28 08:42:42,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:42,003 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-28 08:42:42,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:42:42,003 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-28 08:42:42,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-28 08:42:42,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:42,005 INFO L422 BasicCegarLoop]: trace histogram [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 08:42:42,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-28 08:42:42,005 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:42,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:42,005 INFO L82 PathProgramCache]: Analyzing trace with hash 47450951, now seen corresponding path program 35 times [2020-10-28 08:42:42,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:42,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724606122] [2020-10-28 08:42:42,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:42,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:42,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:42,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:42,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:47,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:47,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-28 08:42:47,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:47,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 08:42:47,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:47,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:47,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 08:42:47,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 08:42:47,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 08:42:47,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:47,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:47,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:47,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:47,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:47,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:47,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:47,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:47,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:47,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:47,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:47,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:47,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:47,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 08:42:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:47,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:47,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:47,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:47,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:42:47,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:47,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 08:42:47,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:47,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:47,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:47,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:47,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:47,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:47,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 08:42:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:47,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:47,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:47,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:47,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:42:47,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:47,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 08:42:47,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:47,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:47,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:47,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:47,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:47,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:47,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-28 08:42:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:47,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:47,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:47,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:47,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:42:47,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:47,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 08:42:47,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:47,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:47,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:47,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:42:47,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:47,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:47,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2436 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 2211 trivial. 0 not checked. [2020-10-28 08:42:47,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724606122] [2020-10-28 08:42:47,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:47,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 08:42:47,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182870283] [2020-10-28 08:42:47,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 08:42:47,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:47,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 08:42:47,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 08:42:47,574 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 19 states. [2020-10-28 08:42:47,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:47,796 INFO L93 Difference]: Finished difference Result 149 states and 154 transitions. [2020-10-28 08:42:47,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 08:42:47,797 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 172 [2020-10-28 08:42:47,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:47,798 INFO L225 Difference]: With dead ends: 149 [2020-10-28 08:42:47,798 INFO L226 Difference]: Without dead ends: 106 [2020-10-28 08:42:47,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 08:42:47,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-28 08:42:47,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-28 08:42:47,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-28 08:42:47,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-28 08:42:47,806 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 172 [2020-10-28 08:42:47,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:47,807 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-28 08:42:47,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 08:42:47,807 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-28 08:42:47,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-28 08:42:47,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:47,808 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 16, 16, 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 08:42:47,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-28 08:42:47,809 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:47,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:47,809 INFO L82 PathProgramCache]: Analyzing trace with hash -942773435, now seen corresponding path program 36 times [2020-10-28 08:42:47,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:47,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137839953] [2020-10-28 08:42:47,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:47,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:47,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:47,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:48,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:52,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:52,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-28 08:42:52,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:52,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 08:42:52,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:52,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:52,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 08:42:52,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-28 08:42:52,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 08:42:52,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:52,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:52,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:52,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:52,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:52,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:52,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:52,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:52,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:52,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:52,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:52,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:52,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:52,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:52,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 08:42:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:52,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:52,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:52,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:52,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:42:52,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:52,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 08:42:52,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:52,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:52,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:52,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:52,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:52,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:52,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 08:42:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:52,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:52,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:52,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:42:52,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:52,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 08:42:52,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:52,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:52,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 08:42:52,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:42:52,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 08:42:52,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:53,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 08:42:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:53,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:53,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:53,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:53,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 08:42:53,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:53,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 08:42:53,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:53,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:42:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:53,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:53,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2467 backedges. 484 proven. 709 refuted. 0 times theorem prover too weak. 1274 trivial. 0 not checked. [2020-10-28 08:42:53,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137839953] [2020-10-28 08:42:53,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:53,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 08:42:53,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762775529] [2020-10-28 08:42:53,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 08:42:53,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:53,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 08:42:53,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 08:42:53,342 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 19 states. [2020-10-28 08:42:54,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:54,126 INFO L93 Difference]: Finished difference Result 187 states and 197 transitions. [2020-10-28 08:42:54,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 08:42:54,127 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 174 [2020-10-28 08:42:54,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:54,129 INFO L225 Difference]: With dead ends: 187 [2020-10-28 08:42:54,129 INFO L226 Difference]: Without dead ends: 108 [2020-10-28 08:42:54,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 08:42:54,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-28 08:42:54,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-28 08:42:54,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-28 08:42:54,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-28 08:42:54,137 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 174 [2020-10-28 08:42:54,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:54,137 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-28 08:42:54,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 08:42:54,137 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-28 08:42:54,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-28 08:42:54,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:54,139 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 16, 16, 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 08:42:54,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-28 08:42:54,139 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:54,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:54,139 INFO L82 PathProgramCache]: Analyzing trace with hash -763079485, now seen corresponding path program 37 times [2020-10-28 08:42:54,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:54,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641779] [2020-10-28 08:42:54,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:54,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:54,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:54,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:54,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:59,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:59,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 08:42:59,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:42:59,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 08:42:59,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:59,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:59,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:42:59,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:42:59,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 08:42:59,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:59,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:42:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:59,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:59,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:59,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:42:59,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:42:59,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:42:59,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:59,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:59,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:59,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:42:59,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:59,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:59,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 08:42:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:59,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:59,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:59,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:59,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 08:42:59,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:59,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 08:42:59,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:59,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:59,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:59,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 08:42:59,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:59,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:59,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 08:42:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:59,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:59,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:59,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:59,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 08:42:59,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:59,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 08:42:59,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:59,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:59,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:59,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 08:42:59,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:59,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:59,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 08:42:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:59,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:59,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:59,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:42:59,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 08:42:59,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:42:59,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 08:42:59,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:42:59,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:42:59,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:42:59,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 08:42:59,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:42:59,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:42:59,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 2671 trivial. 0 not checked. [2020-10-28 08:42:59,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641779] [2020-10-28 08:42:59,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:42:59,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 08:42:59,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159917006] [2020-10-28 08:42:59,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 08:42:59,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:42:59,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 08:42:59,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:42:59,551 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 13 states. [2020-10-28 08:42:59,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:42:59,672 INFO L93 Difference]: Finished difference Result 192 states and 200 transitions. [2020-10-28 08:42:59,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 08:42:59,672 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 180 [2020-10-28 08:42:59,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:42:59,673 INFO L225 Difference]: With dead ends: 192 [2020-10-28 08:42:59,673 INFO L226 Difference]: Without dead ends: 110 [2020-10-28 08:42:59,676 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 08:42:59,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-28 08:42:59,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-28 08:42:59,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-28 08:42:59,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-10-28 08:42:59,686 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 180 [2020-10-28 08:42:59,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:42:59,687 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-10-28 08:42:59,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 08:42:59,687 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-10-28 08:42:59,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-28 08:42:59,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:42:59,688 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 16, 16, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:42:59,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-28 08:42:59,688 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:42:59,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:42:59,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1277828699, now seen corresponding path program 38 times [2020-10-28 08:42:59,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:42:59,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508657750] [2020-10-28 08:42:59,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:42:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:42:59,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:59,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:42:59,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:00,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:04,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:04,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 08:43:04,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:43:04,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:43:04,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:04,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:04,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 08:43:04,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-28 08:43:04,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 08:43:04,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:04,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:43:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:04,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:04,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:04,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:43:04,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:04,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:43:04,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:04,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:04,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:04,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:04,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:04,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:04,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 08:43:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:04,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:04,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:04,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:04,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 08:43:04,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:04,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 08:43:04,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:04,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:04,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:04,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:43:04,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:04,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:04,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 08:43:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:04,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:04,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:04,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 08:43:04,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:43:04,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 08:43:04,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:04,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:04,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 08:43:04,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 08:43:04,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 08:43:04,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:05,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 08:43:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:05,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:05,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:05,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:43:05,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 08:43:05,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:43:05,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 08:43:05,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:43:05,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:43:05,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:43:05,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 08:43:05,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:43:05,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:43:05,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2771 backedges. 548 proven. 804 refuted. 0 times theorem prover too weak. 1419 trivial. 0 not checked. [2020-10-28 08:43:05,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508657750] [2020-10-28 08:43:05,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:43:05,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 08:43:05,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77709687] [2020-10-28 08:43:05,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 08:43:05,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:43:05,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 08:43:05,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-28 08:43:05,286 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 20 states. [2020-10-28 08:43:06,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:43:06,157 INFO L93 Difference]: Finished difference Result 193 states and 203 transitions. [2020-10-28 08:43:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 08:43:06,157 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 182 [2020-10-28 08:43:06,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:43:06,158 INFO L225 Difference]: With dead ends: 193 [2020-10-28 08:43:06,158 INFO L226 Difference]: Without dead ends: 112 [2020-10-28 08:43:06,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-28 08:43:06,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-28 08:43:06,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-28 08:43:06,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-28 08:43:06,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2020-10-28 08:43:06,165 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 182 [2020-10-28 08:43:06,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:43:06,166 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2020-10-28 08:43:06,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 08:43:06,166 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2020-10-28 08:43:06,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-28 08:43:06,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:43:06,167 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 16, 16, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:43:06,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-28 08:43:06,167 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:43:06,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:43:06,168 INFO L82 PathProgramCache]: Analyzing trace with hash 141574947, now seen corresponding path program 39 times [2020-10-28 08:43:06,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:43:06,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974514317] [2020-10-28 08:43:06,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:43:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:43:06,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:06,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:06,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:43:06,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking...